My Modding Progress
car has finally been shipped expecting it to get here mid augustyou better figure your car situation out soon I'm coming to the states mid july for a visit
Off the top of my head... Replace front timing cover, swap to 55k pulleys, custom upper radiator hose, electric fan, shift radiator forward, custom EGR blockoff plate, custom vcuum lines, etc.
I haven't done rods and pistons yet. Want to see what it can do on a stock motor first.
Hopefully!

are you going for a switch controlled engine fan or are you still letting the ecu manage the fan?
you should consider porting the heads when and if you do the rods and pistons (if you haven't already lol). from what i've read the n/a 55 heads are the best for being ported
i know the throttle body size is different between the different classes (e class vs clk for example) but i wasn't aware the pistons and rods are also different, is this the case?
We both have the same NA 55 block and other than a slightly lower compression ratio with E55 pistons and rods, the tuning should be very similar since I don't plan on running over 10psi. I am no longer looking for maximum power but just reliable and comfortable power. I also want to make sure that I pass So. Cal Smog inspection with this car.
Even with my Kleemann setup, Dynocomp was able to tune it for 12 psi and running smoothly until the bearings disintegrated due to pushing the limits of the 2 litre Autorotor.
I have taken the same path with my M3 where instead of the HPF stage 3 turbo kit I decided to go with Maximum PSI's where it will pass smog here in So. Cal.

Have you shipped the Kleemann blower to Kleemann to fix yet? It's a 2.2L
Mike R. at Maximum PSI knows his stuff. I've raced with him several times and Donovan at BMWSOB. Both really cool guys. Good decision, especially since HPF no longer exists.
Nice!!! Let me know when you're stateside!
are you going for a switch controlled engine fan or are you still letting the ecu manage the fan?
you should consider porting the heads when and if you do the rods and pistons (if you haven't already lol). from what i've read the n/a 55 heads are the best for being ported
i know the throttle body size is different between the different classes (e class vs clk for example) but i wasn't aware the pistons and rods are also different, is this the case?
My fan was mechanically driven but now has an aftermarket electric fan.
I've had ported heads for years but I'm trying to see what a bone stock setup will do before I put them on again. Yea you probably read that in either one of my or Steve's posts lol.
Throttle body size is the same stock for stock. Pistons and rods are made of same material but pistons are higher compression and rods have oil port. I've had them both apart and had everything side by side
I really hope you get all the tuning issues sorted out because i don't want to go back to the Kleemann setup unless it is absolutely necessary.
As for the Kleemann autorotor...I'd have to check to see if they removed it yet. I told them to set it aside until I tell them when to send it to Cory.
Last edited by AMGSC; Jul 3, 2013 at 08:49 PM.
The Best of Mercedes & AMG
I really hope you get all the tuning issues sorted out because i don't want to go back to the Kleemann setup unless it is absolutely necessary.
As for the Kleemann autorotor...I'd have to check to see if they removed it yet. I told them to set it aside until I tell them when to send it to Cory.

Send the Kleemann asap so I can buy it from you lol.
Good luck with Weistec




I just want to lay the facts out there and fill in the story so people can make informed decisions on their own. I will try to make it as concise and to the point as I can.
I contacted Weistec over a year ago inquiring about their supercharger kit. In the beginning they wanted me to ship the car to them and I said I was willing to do so if they gave me a good price on the blower.
"Because we were not even close to installing on a car, we did not have interest in this quite yet. We didn't have a finished product. Ahmad asks us multiple times to ship the car, but the answer was no different. We replied on May 12th, 2012 articulating that we were not ready to take his (or any) car yet, and that we still needed a few months. "
Months passed and there was still no headway was being made (no development or research as far as I'm aware for NA 55; feel free to show me something if I'm wrong). Steve expressed interest in working out a deal where I would do the R&D for the hardware and they would take care of the tuning. We came to a deal after many many months of waiting for them to release the supercharger kit (over a year actually). During this time I was repeatedly told that they were really close to releasing it and to just hang in there and it would be worth the wait. That is WHEN I would get a response at all. Usually they would just ignore me.
"On June 15th, 2012 we received a message from Ahmad stating "race gas was a bad idea" and a picture of a broken connecting rod in his engine. With the downtime the car had, he started to build up the drive-train and between this time and August of 2012 he sold his old Kleemann supercharger system to a fellow member with a W209 CLK and sent multiple drive-train pictures with his new axles and diff."
Yes I broke a rod, it is actually documented very well on this forum. Anyone that wants more info or to see how long I waited just go over to the "My modding progress" thread in the CLK55 subforum. I sold the supercharger THE SAME NIGHT I broke a rod since Weistec was telling me they will release the blower very soon. I put another motor in within 2 weeks and was back on the road ready for a 2.9L Whipple.
"On October 5th, 2012 Ahmad asks for an update. We reply with a quick text stating that we are testing on the M113K car and it is a work in progress.
From here to March 15th, 2013 we had no contact. Contact at this point was Ahmad letting me know Gadget just went 10.70's at MIR. Based on the text message he sent and him witnessing a working product it was his choice to swap all parts over to the M113K belt drive. He states that he will bolt on the AMG SC up if we can't do the supercharger system for a certain price. "
This is false. There was contact made between October 5th 2012 and March 15th 2013. I had an overseas trip planned and repeatedly contacted Weistec trying to get a supercharger before I left. I even stayed in contact from overseas using whatsapp. I was back in the states in early January and I just kept being told they were very close to releasing the supercharger. I did see Gadget run at one of my MIR track rentals and I was impressed by the mph it was running in such a heavy car. I did text Steve when Gadget ran a 10.7, afterall I thought he would want to know. Again I kept telling him the money is ready when he is. I was getting sick of waiting and had an AMG sc laying around so yes I would have just bolted that up instead. Steve said they could get me a blower sooner if I swapped over to 55k stuff. So I did, knowing that I can just bolt on the AMG if they continued to delay. He finally agreed to send me a blower and I wired him the money the next day. We did discuss him flying out to tune my car and I did have other cars lined up to help offset the cost. Notice where he says "We are going to spend alot to make work. I don't expect you to pay for all that." FACT: I did pay for all that. Only things Weistec provided me were a 55k supercharger kit, a mechanical bypass valve (which I don't use), and just recently a tuning cable last week This is thousands of dollars worth of parts, fab work, labor, and research to make the NA 55 car work with the 55k kit
Notice how he also mentions that he's flying to Dubai Monday and maybe after that he can come tune my car.
"Between April 10th, 2013 and June 7th, 2013 we went back and forth with tuning and the headaches incurred with that. It was obvious that remote tuning would not be an effective method to get a car like this up and running. We traveled to Maryland on our dime to fix this car.
We took a redeye flight to give ourselves 3 full days (and 4 nights explained later) to work on the car. Before flying out we asked Ahmad specifically if the car is sound on a hardware standpoint. The answer was yes. We arrive to Ahmad's house and we start immediately. A few flashes in the car and it was running a lot better immediately. We drove the car to his friends house to double check the car and to work on a few things. Our plan was to hit the dyno right away and get the car running strong. This plan was however derailed when we found multiple issues with the car. First, the intake air temp sensor needed to be moved to the manifold and not in the intake pipe, second, the car needed a boost gauge, and third the car had bad MAF wires that were repaired. "
This is where things get really interesting. Between April and June is 2 months that he completely didn't mention. Steve says he's busy and can't come tune and I usually can't even get a response unless something is posted on the forum. He also said he can probably get the tune right on his first try. At this point the car starts and idles on factory file but runs very rich due to much larger injectors. He says he will send me some files to try remotely since I had a EC tuning cable already. We set up several dates/times to attempt remote tuning and I even missed work for some of these days AND WAS IGNORED ALL DAY. I will have to go back and look at my calendar but I was stood up on several occasions when we had agreed upon a time/date to remote tune. The Weistec software was not working so we had Jerry from EC encrypt files that Steve would send him and then would load using the EC software. I have worked with Jerry many times in the past and he has been very helpful and was nice enough to help in this case as well. To save on time, NONE OF THE FILES WEISTEC SENT ME REMOTELY WOULD EVEN START THE CAR! Matter of fact the final file they sent me did something to the ECU where it would no longer communicate and I had to overnight it to Weistec (cost me over $100).
At this point Steve says if I want my car to run any time soon, I should load the EC file I had for my old Kleemann supercharger setup AND PUT MY SLR INJECTORS IN. NO MENTION WAS MADE THAT YOU CAN'T USE MERCEDES O-RINGS WITH THEIR MANIFOLD OR TO SWAP O-RINGS. I did as they said (which you see they later blame me for later). Things still didn't work so I repeatedly tried contacting Steve to come tune the car. After several attempts and posting on the forum Steve finally gave me a date that he would fly out to tune the car. The weekend of June 7th is what he said (this is all posted in my other thread). Fly in Friday night and do some street tuning, Dyno day Saturday, and MIR Sunday! I was excited!!
For the few weeks leading up to that date I kept asking Steve for flight details and he kept saying things along the lines of I'm booking tickets now, let you know in a few minutes. I told several people Steve was coming that weekend and had my friend who owns the shop where we dyno'd that I would need the dyno the whole day Saturday. He said he already had a customer for that day but would bump that guy to Friday so I can have the dyno all day Saturday. Everything was ready, I was finally seeing a light at the end of the tunnel. Less than a week prior to June 7th I still had no flight details from Steve. I ask if he's still coming that weekend and he confirms he is and is booking flight. The Wednesday night before he was supposed to fly in I get a text less than 12 hours prior to his flight LANDING saying to pick him up at the airport in about 10 hours! THIS WAS THE FIRST TIME HE SAID ANYTHING ABOUT FLYING IN AND HE WAS SUPPOSED TO FLY IN FRIDAY NOT THURSDAY MORNING! I told him that it's very short notice and I have to work the next day and have a meeting I can't miss. His response was come on man I'm flying out there for you, you should appreciate this, work with us. So I scramble and start calling some friends. My friend Hayat (thanks!!!
Ok. Keep in mind to this point there was no mention of money and I even offered that he could stay at my condo. I text Steve and he says Mike came as well and they are heading to the hotel to get some sleep and will meet me at my house around 4. I meet up with them and we load a few files and it starts raining. So we drive my car over to my friends shop (not the one with the dyno) so we had a dry place to work. Car drove well in traffic, I was getting my hopes up. Now let me address the three issues that Steve mentioned that supposedly derailed the dyno time. First off the dyno was supposed to be on Saturday not Thursday night but let me clarify some things
A) IAT sensor needed to be relocated... The IAT sensor is located in the MAF from the factory on the NA 55 cars. Weistec never mentioned anything about relocating it. Regardless, it involved spicing two wires and I cut a plug off a spare 55k harness I had. 10 minutes work at the most.
B) The car needed a boost gauge... The car had a boost gauge and has had it for years. I just hadn't installed the fitting in the manifold yet. Took me about 5 minutes to do that. In addition, if this is necessary they should include it with the kit, I had to purchase everything myself.
C) The car had bad MAF wires that needed to be repaired... COMPLETELY FALSE!!! The car has run with those MAF wires for many many years. The wires were extended a very long time ago, prior to me ever doing the headlight intakes and we all know the car ran very well for years after that. Matter of fact those wires weren't touched, only the two IAT wires were spiced into. I know Weistec does not want me to post a picture of their wiring job for the IAT sensor...
So in total 15 minutes of work on Thursday night. At this point Steve declares the car dyno ready. I don't know why no street pulls were done prior
I even asked repeatedly prior to them coming and while they were here if I should swap out the SLR injectors back to the ones that come with the Weistec kit and was repeatedly told no. There are many witnesses to this as I made sure there were people around at all times in case of something like this happening. I call my friend that had moved his customer to Friday so we can tune Saturday and tell him that Weistec had flown in earlier than planned and if he could somehow move his customer back to Saturday. He did that as a favor to me.So I drive the car to the dyno Friday morning and sat there and waited for Weistec to show up for hours. Got the car all strapped down and at that point is when the clock started ticking, $100/hour. Literally hours went by without a single pull. We finally get one pull in and it actually looked promising for a first pull. The run was stopped at 5800rpm, was making about 10PSI, and running 6 degrees of timing according to Steve. The car put down 485whp on that run with AFR's off the charts rich. I was happy for this to be the starting point since I had run tens before with similar power on the same dyno. After that we didn't see any more pulls that day.
At this point Steve states that the MAF has been maxed out. He asks what I used for the Kleemann setup and I said they provide a potentiometer that gets put in the MAF wire to ad resistance to prevent it from maxing out. He say's that's not a good way to do it. He says we need to make a bigger MAF housing. Luckily my friends shop has a CNC machine and all kinds of pipe benders, expanders, etc. I talk to him an he drops what he's doing to help me out and makes a bigger MAF. I mentioned that 3.5" would be plenty big for a MAF housing but Steve insisted on 4". In order to not get the finger pointed at me I told my friend to just do whatever he says. So about an hour or two later we had a new intake made (pictured earlier in the thread). Steve mentions that the power steering pulley was rubbing the custom upper radiator hose that I made. I had made sure that it wasn't and it cleared the pulley and not touching, albeit very close. Had it been touching it would have cut the hose by then. Steve and Mike elongated the 4 holes for the radiator support and moved it forward a bit. I think that was the only positive of the whole weekend. The car never ran right after the new MAF housing. Struggled to even start. My friends wife was getting really mad tat he wasn't home yet and it was late so I again asked him for a favor to use the dyno the next day even though he had another customer. He said he would ask his customer to come in later so we can get some dyno time in beforehand and worst case we would unstrap my car so he can tune the other car and then put mine back on (which is what ended up happening). We called it a night and agreed to meet up bright an dearly at the dyno the next day (left my car strapped on the dyno overnight).
Saturday morning comes along and the shop owner and I were waiting on Weistec again. When they get there they start messing with the tuning but the car was struggling to start and idle. They messed with it for a while until the other customer came for tuning. We had to push the car off the dyno and out the shop.
The Honda was tuned by my friend in less than 2 hours (superior software etc makes it much easier to tune). During this time Steve is trying to get the car to start and idle and forum member MindBend shows up with his Weistec CLS55 and him and Mike start discussing the issues he's having with his setup but I won't get into that. The Honda comes off the dyno and by this time Steve had gotten the car driveable and I could hear that he was getting into on the street. I figured AFR's must be good if he's beating on it like that. He comes back and says the car is really fast. I'm thinking maybe all this may have paid off. When Steve was pulling the car into the shop I noticed that an intercooler hose to the intercooler pump had been pulled off. I get under the car and push it back on and clamp it down with one of the shop workers. This did not take more than 15 minutes tops. Car gets strapped back down on the dyno. Steve does a pull and the car is off the charts lean. First thing I think is why was he beating on it if it was so lean? I have a wideband in the car! Anyways, Steve decided to test for vacuum leaks. He did find an injector or 2 leaking at the manifold by spraying brake cleaner. AGAIN, THE SLR INJECTORS WERE INSTALLED PER WEISTEC'S REQUEST. NO MENTION WAS MADE OF USING DIFFERENT O-RINGS. We pull the rail off and notice that the mercedes o-rings are too big for the Weistec manifold. At this point we are scrambling trying to find o-rings. Tried some that were at the shop and must have purchased at least 5+ sets of other o-rings from a parts store down the street. Buttoned everything back up and no more leaks. Unfortunately this did not fix anything. Nothing changed. The car was still on the dyno for a few hours after and made no pulls. The shop owner then had to go home.
To Steve's credit he didn't give up. He continued to try to tune it in the parking lot. He loaded a file and then the ECU stopped communicating. They had to drive back to their hotel to get special tools to reset it. At that point we decided to just load a file to get the car home and call it a night. I thought they were staying until Sunday night but apparently they were leaving Sunday morning so no tuning could be done. That didn't make sense to me since originally that was supposed to be the day we took the car to the track.
Then we went and ate dinner and discussed how to move forward. They said that I should send the car to them and they would get it dialed in. So that was the plan moving forward. Then I thought about it and figured if I deleted the MAF and ran everything 55k (ECU and rewire harness) then tuning should be much much easier and could be based off the 55k files. I gave Steve an option of either shipping the car or swapping everything to 55k. He chose the later.
At this point I paid rcompart to flow out and put in a 55k ECU and rewire. Steve knew about this in advance and was supposed to get me a file to try and he sent me a Weistec tuning cable. He shipped it to arrive Monday when I told him Rudy would only be here the weekend
So to his credit he did overnight another cable. No file though. After many many texts I got an email at 4:30am with a file. After the Weistec software would not recognize the cable I tried to get Steve to help out while Rudy was still here but his response (took hours before I got any respone) was he's doing everything he can and he's too busy. Later on we had a conversation and I said he has one more week before I pull the blowr off and end all ties with Weistec. He said he would load files remotely Monday. Monday came around and he couldn't load any files remotely and he told me to overnight the ECU but it was too late in the day since we didn't start until 6pm. This time he did cover the cost f the shipping back to him and I shipped it out Tuesday night. Once he got my ECU I saw this post by him. He said he still wanted to finish the car and will send me a file but wouldn't arrive until Friday. I have received the ECU back and this is where things stand now. I tried to keep it short but I guess that just wasn't possible. I haven't even written everything in this post but wanted the facts to be out there.
It would be better if the kit can be designed to work with your stock ECU and MAF. That way future customers would not have to swap out the ECU, use custom MAF housings, etc...
DynoComp was able to run 11-12 psi through my Kleemann with PERFECT AFRs and 100% drivability. The ONLY reason I am doing a smilar project with Weistec is because the Kleemann blower broke some bearings AND the fact that the blower maxed out BUT not the tuning.
I hope that Rich@Dynocomp adn Steve@Weistec are willing to work closely together to come up with a stock ECU/MAF solution to a 3 litre SC kit for NA 55 platforms as well as making this one-off project a success.
I think Weistec made a poor decision by asking Ahmad to change over to the E55 ECU and fabricating a custom MAF housing. How many future customers are willing to make such a drastic change to their car and risk losing stock functionality?
Last edited by AMGSC; Jul 6, 2013 at 09:05 PM.
It would be better if the kit can be designed to work with your stock ECU and MAF. That way future customers would not have to swap out the ECU, use custom MAF housings, etc...
DynoComp was able to run 11-12 psi through my Kleemann with PERFECT AFRs and 100% drivability. The ONLY reason I am doing a smilar project with Weistec is because the Kleemann blower broke some bearings AND the fact that the blower maxed out BUT not the tuning.
I hope that Rich@Dynocomp adn Steve@Weistec are willing to work closely together to come up with a stock ECU/MAF solution to a 3 litre SC kit for NA 55 platforms as well as making this one-off project a success.
I think Weistec made a poor decision by asking Ahmad to change over to the E55 ECU and fabricating a custom MAF housing. How many future customers are willing to make such a drastic change to their car and risk losing stock functionality?




A 9-10 second Benz in street trim with no cage. (what a rush just dwelling on that).
That tuning file will be worth adding to the purlitzer engineering benchmark list. lol
This post is very interesting and educational for me as well, lovin every minute of it.
Don't let the timing get you down it seems you are so close.
We got your back, Gator








