SL55_Forever

So since we're talking track here (1/4 mile kind) wouldn't leaving ABC Sport off be best since it lets you transfer most of the weight to the rear of the car on the rear axle for best 60 foot time? Or would you set it to ABC Sport regardless?

kamilclk430

Good Point if in fact the suspension is softer it will def help out. I had my car raised all the way at the track to transfer weight for a better 60ft. These cars are def not made for the track but there is certain little things that can be done to help them get that huge weight down the 1320.

kamilclk430

Over 41K views which makes this the top 3 most viewed threads in the CL section and over 600 Replies. Thanks to Everyone. Happy to be a part of this forum and have so many great members on here supporting MB builds.

Thanks Again

Kamil

kamilclk430

a lot of people have asked me on PM what my rear tank looks like. Well here it is I took a quick pic last night, its kind of wet due to changing the coolant in the tank for the winter time but when its clean you can imagine how it looks.

kamilclk430

The return from Speedriven yesterday to my Dad's City Garage was not the most fun in getting the car in the garage. My wife didn't record the entire thing but here is how it was going after I just washed the car before hand

V12Godspeed

Crazy snow up there!!!

kamilclk430

Roads were ok just these damn CHICAGO alleys were a mess.

well at least now there is an exhaust clip lol

kamilclk430

Most likely will hold off until late March or early April to sell the car. The weather is not helping the sale. As of today car will only be available to only serious buyers ( People that actually wanna buy it and not come look at it and talk about Mercedes tuning for 5 hours and have no clue what the car really is) It will not be available to be sold to anyone at this point that is not off the forum, unless they know someone from here and know enough about this car. I will be writing a new full ad out for the car when it comes back on the market since I missed a lot of information on there and have a PM box with questions that should have been mentioned in the for sale thread. Thanks to all that supported this car and we will see where things take us in next couple months. I will be building a new project soon and also doing more work to my S550. ( Nothing Crazy ) new stance some exhaust work and work on exterior and interior. If I have a change of heart I will also keep the CL and build it way past wht everyone on here has done yet.

kamilclk430

A forum member is coming out this weekend to look at the car, I have replied to some PMs and the guys that are further away from IL. For now car is still for sale but I will update this weekend knowing more.

F1BHP

Hey Kamil, do you know what the max boost pressure the stock wastegates on the m275 600 engines are set at?

kamilclk430

12PSI - 14PSI but there is a way to make them hold more

F1BHP

That's it, what do I have to do. Is it in the ECU programme or the waste gate itself?
I meant what can the waste gate hold not what the ECU is set to.

Welwynnick

You can't simply adjust the wastegate actuator link. It's a closed loop control based on manifold pressure. You need to re-map the ECU. Slide 53 onwards:

http://www.mercedestechstore.com/pdf...2008-06-03.pdf

F1BHP

So the ECU can modify the wastegate. Up to what boost level, why do people run custom BOV on this engine?

Welwynnick

The stock 600 is 1.0 bar, the Maybach is 1.2 bar, the stock 65 is 1.5 bar, and my Eurocharged re-map goes up to 1.5 bar. That's all I know.

Custom BOV? Can't see the point.

Thericker

You've gotten it twisted, you already asked me this Q before, I'm running them in prep for bigger turbo's & manifolds NOT just upgraded comp billet wheels... You can't actually manipulate the AMOUNT of boost w/out ECU changes, but mechanically you can tweak the stock Wastegates to hold boost longer thru the entire rev range. Doing this is even better as peak boost drops off quickly on our engines, so holding boost longer thru each gear is a very nice gain in perf you will totally feel etc..

F1BHP

You say tweak the stock wastegates. Does this mean via the ECU or at the wastegate itself, that is what I am not understanding.

Thericker

Umm read again, I said "Mechanically Tweak" the wastegates.. Big dif you obviously aren't reading slow enough or?? I went onto explain the differences in both modifying them thru ECU & Mechanically modifying boost IE NOT using ECU as you couldn't even do what I'm purposing thru ECU.. Sadly the stock ECU control of boost doesn't allow you to hold boost longer in each gear, it just allows you to manipulate an overall value of boost NOT A number or duration of time etc..

Tweaking Wastegates is simple yet too complicated to explain if you're missing everything else I'm saying.. Sorry..

F1BHP

I did miss the bit about mechanically tweaking the wastegates but thank you for continuously being a patronizing ahole as it would be fake of you to change your normal demeanor.

Ekselent

I have read somewhere you can adjust the waste gate arm by 3 turns to make it a hold a bit more boost.
I have not do it yet at my car but I'm gone try.

Juha

F1BHP

Thx. Ekselent I will look into that.

kamilclk430

PM me and I can help.

Car is Pending Sale to a forum member. Deposit on the car taken today. I hate to see it go but at peast its going to the right person.

Mercedes22

Congratulations. What's next ?

VMAX7

Get a black marker and mark a line across the rod and nut(iirc its a K24 turbo).

Start small, adjust .5 (half) turn then go for a drive, keep adjusting until you are satisfied. I wouldnt do more than 2-3 turns(adjusting too much will cause boost to taper off rapidly at redline, I havent heard of this method causing engine damage back when I had my turbo car tho)

Best results will be seen if you have a boost gauge to see where it spikes and how long it holds before boost tapers off.

If you dont have a boost gauge it would be tedious and risky gas wasting driving to get a feel based on butt dyno.

VMAX7

Well he's had the best Merc has to offer in terms of stunning acceleration, next would be a high strung and visceral hypercar most likely.