82mm TB for C55
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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
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2006 Weistec 3.0L SC'd C55, 2006 MaxPsi PT6466 Turbo'd M3, 2019 Maserati GTS , 2020Alfa Quadrifoglio
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.
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w203 m112
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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
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
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From: So Cal
2006 Weistec 3.0L SC'd C55, 2006 MaxPsi PT6466 Turbo'd M3, 2019 Maserati GTS , 2020Alfa Quadrifoglio
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
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 teethAgree 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.
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From: So Cal
2006 Weistec 3.0L SC'd C55, 2006 MaxPsi PT6466 Turbo'd M3, 2019 Maserati GTS , 2020Alfa Quadrifoglio
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
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 teethAfter 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?
Last edited by AMGSC; Nov 10, 2009 at 07:47 PM.
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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?
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?
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From: So Cal
2006 Weistec 3.0L SC'd C55, 2006 MaxPsi PT6466 Turbo'd M3, 2019 Maserati GTS , 2020Alfa Quadrifoglio
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!
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.
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w203 m112
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.
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From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
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.
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.
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From: So Cal
2006 Weistec 3.0L SC'd C55, 2006 MaxPsi PT6466 Turbo'd M3, 2019 Maserati GTS , 2020Alfa Quadrifoglio
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.
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.
Last edited by AMGSC; Aug 19, 2011 at 05:09 PM.
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From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
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
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..
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From: Los Angeles
2005 C55
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.
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.
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From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
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!
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From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
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,,
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,,
Last edited by cm60k; Mar 7, 2013 at 06:39 PM.
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From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
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??
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??
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From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
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?
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?
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From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
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From: Maryland
2006 C55, 1995 C36
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?
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?
Wish I had the means to compare the output on cylinder 4 to the rest
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From: lebanon
w 203 c 55 amg
It's a good thing Vadim is a co-tenant and partnered with Powerchip. My car will definitely be custom dyno and road tuned. I would think that intake restriction is one of the first things you want to open up. If you can't inhale fully how can you exhale fully. btw...I thought you were working on a larger TB kit for C55s? Also still interested in a bigger AMS pulley to add more boost.
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From: So Cal
2006 Weistec 3.0L SC'd C55, 2006 MaxPsi PT6466 Turbo'd M3, 2019 Maserati GTS , 2020Alfa Quadrifoglio
