hooleyboy

I wonder If a MAF from say a SRT8 would work? maybe just a larger MAF housing.

blackbenzz

Been there, done that. Just use bigger piping and CNC an adapter to put the MAF sensor in. Larger diameter MAF housing will throw off the calibration. There is more air going through than the sensor will read

AMGSC

You are exactly right. Linh and Vadim both told me the same thing. That is why he will need to recalibrate after the break-in period of 300-400 miles.

TruTaing

This is what I was thinking.

Could ya elaborate more upon this and how it would be done? What exactly do you mean by 'recalibrate' ??

Thanks!

blackbenzz

Adding a 82mm TB on a non factory 55k car is more difficult than one would think. It will require a retune if you go to a bigger MAF (which I think is necessary). I had to totally redesign my whole intake setup. It is now a single 3.5" pipe with a cone filter on the end. The hole in the headlight funnels cold air to the filter and I had a heat shield made to block the heat from the headers. A better heat shield would enclose the entire filter housing and block any engine heat. There is very little space between the secondary firewall and the back of the TB. I tried all kinds of commercially available elbows and none would fit. Look at your factory elbow, it is not a 90 degree bend! You cant even mandrel bend the appropriate size pipe to fit in the given space. All I can say is if you do what I did, you WILL get more air in the car and this cause issues of its own. Like maxing out the injectors You will definitely need a retune as well and as we all know, in this MB aftermarket getting people to come out and custom dyno tune your car is like pulling teeth

AMGSC

Agree that bigger MAF would require extensive remapping and possibly larger injectors but I already have the larger injectors from the HPS kit.

Vadim told me that the stock sized MAF might not be a big a restriction as you might think since the air pressure difference inside vs. outside of the SC will create vacuum that pulls the air into the MAF which creates much less turbulence than when air is pushed into the MAF with an NA car.

AMGSC

Ahmad,
After this 82mm TB, custom 3.5" intake, larger MAF, SLR injectors and a custom LET tune, I hear that you actually lost 1/4 mile time and trap speed based on your other post? How coud that be????

That's not very encouraging since I've got the same setup as you except I have dual 3" stainless steel intake tubes with cone filters protected by heat shields on both sides. I don't have SLR injectors but still much larger non-stock 44lb Bosch injectors at 3bar. Tuning still to be determined but should I even have bothered with all this if no gains are to be had?

blackbenzz

I dont know how it could be. Possibly because at my low boost levels it doesn't really help flow. Bu tthat doesn't make sense since the car went lean which means more air in the ngine which should translate to more power. I will be going to the track again soon as I dont care for dyno numbers (The car made good power on the dyno). I thought you were going to the track this past weekend, how did you do? I have seen Vadims y-pipe for his 82mm TB kit. It is horrible. The 2 pipes flow air directly into each other!

AMGSC

Thanks for the feedback. Actually, the Y-pipe you saw was just a make-shift one for TTM. He did not want to share his real Y-Pipe design until he launches it under his own name. You could even say it was a decoy

That is what is holding up the completion of my project...The completion of the maximum flow Y-pipe that will still clear the tight space in front of the firewall. I know you tried a variety of elbows and so has he.

TruTaing

Ya got a pic or two to share of your intake setup? Ive always been curious to see it

Havoc

I know this is an old thread, but was wondering if anyone with a 55 N/A ever installed a bigger throttle body.

I'm about to send my SLK55 to Evosport for the following mods:

PTE 55K Cams
Evosport Custom Long Tube Headers, Race Cats, X-Pipe (First Evosport 55 N/A LT)
Modify Intake Manifold for Larger Throttle Body
Quaife LSD
Dyno Tune

Evosport will see if it is possible to modify the stock intake manifold to accept a larger throttle body. This is the only way to get more air into the 55 N/A as the CF Renntech Air-Box is just not enough.

AMGSC

I have a 82mm TB but the custom inlet piece was made for a Kleemann SC. Here is the link. https://mbworld.org/forums/c32-amg-c...nlet-pipe.html

Havoc

Thanks for posting that, but I was looking for a modified stock 55 N/A intake manifold that accepts a larger throttle body.

What I have in mind is to make a high flowing intake manifold that accepts the MB 82mm throttle body. Now this would really wake up the 55 N/A especially in conjunction with long tube headers and aftermarket cams!

The Renntech CF Air-box is just not enough to increase the air intake. I'll push for a high flowing aftermarket intake manifold to be built for the 55 N/A engines..

559EVO

This will be good, first N/A 55 LT/cams results, whats the price on the cams and install estimate ? You can pm me if you need to.What about Evosport underdrive pulleys, are you getting some?

Havoc

PTE 55K Cams
The PTE cams with Ti retainers sell for around $3K, but you can PM Patrick with PTE to see if he can give you a better deal. He has just 2 sets in stock left and those will be the last ones he stocks. After that he will special order them in 1 or 2 sets at a time. The PTE 55K cams in a N/A M-113 motor adapts quite well and will pull to 6400 RPMs where as the stock cams lays down at 5200 RPM. The Ti Retainers are only required if the motor will see 6800 RPMs. You can also find these cams slightly used for a lot cheaper. I haven't quoted Evosport on the install, but I would imagine you can get them installed for around $500-$800.

No, I'm not interested in the underdrive pulleys. My goal is getting more air in and out of the engine!

cm60k

Agreed with Havoc,

guys, any hero around here, can wake this & got any idea how to modify the N/*** intake to accept the 82mm T/B,

i know it’s a complicated, cause there is no space in the intake that can machined.....!!

I'm wondering why some of a great like (Kleemann/Renntech/Eurocharged/Needswings/Evosport), customize a larger intake for the N/***....!!!,,

i think its a good invest for a lot of N/*** fans......
ZAYED,,

Havoc

Actually, there is enough room on the intake to modify a larger Throttle Body. Question is, will it hit anything once installed??
Looking at the stock TB opening on the back of the intake, a new TB opening can be made, but the new TB will be positioned lower once installed and not sure of the clearance we have below our stock TB??

suicidal4life

Probably close to 1/4" of room to open it up to the bottom. More if you get creative. Here's a pic from the inside.

cm60k

I think our intake NOT acceptable welding isn’t...?, if so, we can cut the base(which our 74mm set), & put the 82mm base....

ZAYED,,

Havoc

Thanks for that pic Suicidal!

Damn, that intake runner is right there! AMG does a great job at maxing out what they already have. The new TB opening would have to move up higher then as to not interfere with the runners, if there's room to go higher.

Would you have a pic from the inside back portion of the upper?

Havoc

True, but you still need an 82mm opening. No point in putting a 82mm base over a smaller opening, you know..

dre5373

I'm a little surprised by how sharp that angle is

Wish I had the means to compare the output on cylinder 4 to the rest

cm60k

I made a simple primary 82mm TB plate, to put it in our N/A 55 intake manifold,,

but not sure what’s the best way to fix it....!?!?







ZAYED,,

alfred dahdah

Are you using map or maf sensor?

AMGSC

maf sensor.