lizardjack

Check the compression. Could be one of the pistons or valve gone.
Sorry mate(((

xxaarraa

Loungn, just a suggestion: PM the guy to see if you can help troubleshoot his problem offline. It may have nothing to do with your tune, but as a "tuner" its better to give the customer the benefit of the doubt before questioning their credibility or troubleshooting the problem.

loungn14

he opened a thread that was based on another thread already opened in the e55 section and discussed to lengths end for his friend...

Lenin

Don't mean to jump on you (it is xmas after all) but I think that a guy with 10 times as many posts as you who is also a sponsor with a good reputation (a rare thing) would know what to do without your suggestions.

tw2

I know you are talking about the e55 but are there any mods that should be done on a c32 for reliability? The only power mods I plan to do are pulley, ecu/tcu tune. I have already done HE, pump and needswings isolation. I plan to add a pulley saver. Are there any other mods you would recommend to keep it all together? Do the fuel rails flow enough?

loungn14

I had some huge hp on my c32 and ended up doing injectors (had long tube headers/throttle body/custom heads etc. If you are just doing a pulley/ecyt/tcu with the other mods your fine.

xxaarraa

Number of posts has nothing to do with anything. You take the internet way too seriously. It was a simple suggestion to loungn, and from his post, he seems to have taken it the right way.

You can rest easy.

430

I am running a 185mm pulley + a ton of other mods (nothing fuel related) including an EC tune and I am running on the rich side - 12.8 afr (if I remember correctly). It is not a problem to safely run a 185 pulley it just takes the right tuner. I am happy to run on the rich (safe) side at this point as I have not logged in the heart of winter and just added a set of modified intake manifolds.

320 dreamer

12.8 is to lean for a f/i engine jeremy. you should be at 11.8 to 12.2 max. datalogg and see what i mean im guessing that over 3000 rpm in 3 or 4 your well over 13 afr and thats not healthy. when we did the dyno session yrs ago the xfire with the 181 couldnt get his afr down. wasnt a tuning issue but hardware (fuel )issue.
with the modded mani you adding even more air to an already lean tune. be careful bro

tw2

I agree with 320, for example 11.5 is a realistic conservative safe AFR for boost, with 11.8 being what most people aim for with high boost. 185 pulley means what 22psi?? that is very dangerous on pump fuel.

ROGUE.AMG

who in the bay area is the master of mercedes? how do you check your AFR? Im looking to get a a pillar with boost, aFr, fuel. any suggestions on where to get this done?

AMG3.2

Instead of getting that, I would suggest devtoaster REV. It is an app for your android or iphone that works via OBD II.

You have to buy the app, $40, and the PLX Kiwi WIFI device, $140.

I don't have this, but people say it works great.

To check AFR, I think you would have to dyno. REV can also tell you AFR.

boost420

Rev dosen't show AFR, just Boost, IM Pressure, In. Temp, Barometer, MAF Rate, Fuel Pressure, Fuel Trim (SB1, SB2, LB1, LB2).

Also shows Fuel Consumption, Fuel Consumption Avg, Fuel Level, Engine Load, Timing Advance, Coolant temp, EVAP pressure.

430

Sorry you are correct and it is a mistake on my part. I am running 11.8 (not 12.8) afr at full throttle at the top of the rev range. Those numbers are from the street. When I ran on the Dyno it was 12.3 (if I remember correctly).

Gramma_Benz

Rev CAN show you AFR if you get a bung installed and buy another sensor, but normally it will not.

320 dreamer

you had me worried man! 11.8 is the sweet spot. did you get the n/w big manis or the modded oem's? i have all my intake parts being thermalcoated at robs now waiting for their return so i can logg the new tcu v2.

430

I have the modified AMG manifolds from Rob (Needwings). The manifolds are great. Just too many pieces on the SLK32 to run the Needswings manifolds. I would have to replace the E55 intake with Rob's DCA and replace the front grill with one like you are running.

The car already had traction issues on street tires. It is nice to have the power but it sucks having to back off the throttle at 50+ mph because of lack of traction.

320 dreamer

i have robs dual cai and the big manis as well as my ypipe ported polished and thermalcoated. should make some serious power when its back together. finally got my wheel off so paddle shifter os beoing finished up,\. then its on the true dual exhaust with slk350 mufflers and the front lip install want everything done for timmayfest!

430

Sounds like a good project.

I have the SC y-pipe from Rob polished & thermalcoated as well as the SC snout being polished, flow coated, and thermal coated.