1. I have installed ASP pulleys and did ECU re-progarmming with local chip tuner who has all latest equipment and actually studied in Germany, to be able to make ECU programs for diff cars...

They used my existing program and according to increased diameter on Pulley amde all necessary adjsutments...The car runs much faster but I am not sure We are getting the most out it...

At O2 sensors in the middle we have 1:1 mixture and on TOP WOT 0.92...May be I need to lean or make is richer somewhere, and change inginition timing to other parameters ???

Give Me some tips please on what ratios and parameters do I want to get ???

When I had only Kleemann Style Header (Primary Cats removed) I have raced Evotech SL55 said to have 680 HP ( I doubt) with 21 inch wheels and beaten by 3 cars in 1/4 and he was never catching up on ME...Now that the car got pulleys and ECU upgreade and feels much fast now...I exapected to spank him badly but to my surpises we runned neck to neck in 1/4 and after 125 he actually startted to pull on me and this is with 21 inch wheels...I was shocked. ...

Eventhough I spanked him 3 other times after...I still dont like what happned in a 1st run ...

When I spoked with Evotech people and the owner of the car here, they told ME that they only brought Eotech programmer who re-programmed ECU and transmisson on that car and that is it !!! Now that I have pulleys as well and the car mcuh more powerfull now and he runs even with ME...something is not right...SL is 400 pound heavier...

Now when I spoked with my tuner they said this could be cause that Evoetch SL55 has no CATS at all and has a better flow and that is why it run better on TOP...can it be true ???

You think removal of Secondary Cats can make this difference on TOP, less pressure, better flow ???


2. Another problem...it happaned around 5 times in 3 weeks...when acceleration slowly...the car bogs down, jsut looses all the power for less then a moment, like someone step on a brake quicky and then it fine...very starnge...Star diagnostic did not show anything...

One person said it could a bad Spark plug in one of the cylinders and Evotech guys said that it could be something with Throtle opening at some stage ???

With ECU electronic pedal was re-programmed as well...

What are out experts think here... I need your suggestions...

Many Thanks

 

S/C engaging ? With a wider diameter pulley the engagement is more severe than the stock pulley - and also if u are not at full power and the S/C engages you will feel it more too ... dunno just a thot ...

 

E55, you have been SOOOOO helpful to me and I wish I could be as helpful to you.

The only thing that sticks out in my mind is the ECU programming. There are so many factors involved. I know Cory at Kleemann has serveral different programs that he tries on different cars. I got I think the 2nd or 3rd program in line and we found one that works great.

My point, I know this guy has knowledge of German cars etc, but so many issues can be going on with him tinkering with ECU. Example, I had my car ECU tuned by SpeedtuningUSA and then took it to Kleemann for pulleys. Car pulled 496 and according to them, "Was DUMPING fuel into the system". Just to show me the difference, Cory took my ECU and flashed it right in front of me and we popped it on. WHAM....car pulled 517, nearly a 20hp increase with ECU flash difference from Kleemann.

I just wonder if you should bite the bullet and go Kleemann Flash/Renntech or Powerchip. That way you know it's not the ECU tune and you have other issues going on in the car.

Just my humble opinion and I wish you the best of luck with your car.

Jim

 

Will Renntech reprogram an ECU with headers and pulley from another company?

 

Mike,

It could possibly be the spark plugs.. I would say that you might be seeing knock and the ECU is dumping fuel and/or pulling timing to compensate..

If they went too aggressive with the timing it could cause that problem you are describing.

Go and put your car on a dyno and/or do some datalogging and post the results. Dont mess around with the car on top speed runs until you know what is wrong otherwise you could end up with a BIG problem.

 

E55....what is the difference in diameter between Kleeman and ASP pulley?

 

stevebez and vrus both have excellent points on this, here's something you can try. Get the car rolling gently in manual mode, and then after you let the car run gently at around 1500 RPM in fourth gear give it a good amount of throttle to trigger the supercharger engagement. You'll want to run this test a few times until you are satisfied you are getting consistent results.

If you don't notice the car bogging down in fourth gear, the problem you noticed is probably just the supercharger engagement. I actually think the bogging/bucking is worse with a bad belt on a stock pulley car, my guess is that with a bigger pulley it can be more noticeable. By being in fourth gear and/or having the torque convertor locked-up, this test takes out some of the torque multiplication effects of the supercharger engagement. In my experience, the supercharger engagement bucking is worse when one is in first gear, at ~10 mph, and going uphill without the torque convertor locked-up.

If you still notice the bogging with this test in fourth gear, I'm with vrus, something amiss. It should be checked out.

 

ASP is about 1/4'' larger in diameter than other pulleys.

Misha, you might be experiencing kompressor clutch slipping. When I ran an even bigger pulley than we normally use on C32, every once in awhile the kompressor clutch would slip. When it happens you feel like you been hit by truck in the back. The symptoms are very similar to what you are describing.

 

Thanks guys...I will test...I am thinking of Kleemann or other German ECUs for my mods but not too sure yet...1500-1700 EURO+ shipping and I would need to send my ECU to Denmark or Germany...

So how would I know now is my Kompressor clutch is slipping and if there any problems...and why ??? Make tuners like DMS, Wetteruaer have about same size pulleys and dont have such problem...

Could I be slower on TOP cause of this problem...The car runs fine mid range and feel very powerfull overall...

What about Throtle opening ???

Anything else I should check ???

 

Sorry to hear that E55RUSS, I have the ASP pulleys with no softwear and the car pulls like a train, no problems at all.... I think it may be your softwear. As mentioned above try to Dyno and see what you could come up with.

 

change your IC pump just in case..

I did it on my C32.. it was very easy and cheap.

I will be going to ASP pullies too, but NO software for me. Atleast not yet.

 

I have neweset 07 model of IC pump installed already...

Been told by Cory that I am running too lean on TOP...and that it sounds like ECU problem as well...

Going to re-programm everything on Friday...will keep my fingers crossed...

 

E55Russ,

have you considered ecu-tuners in Finland? there is authorized kleemann-dealer. They are maded lots of FAST mercs to Russia. PM me if you need more info.

Sorry my bad english

 

Hello my neighbor...We have Klemann and all other tuners present here, work with Germany directly...

I can get any ECU from Germany but just dont want to send my ECU now, cause I wanna drive the car...+ I am not ready to pay 2000 EURO now just for ECU upgrade

One thing I buy from Finland is LYNX but dont know where to get some tuning for it ???

 

IMO, you need to have a good dyno pull with good A/F ratio data using a good wideband O2 sensor. Secondly, the operator should be train to listen to any pinging or detonation during the pull.

Then, the tuner needs to have at least the dyno pull data in a table to do good programming. If they are trying to program without dyno information, then they are not doing the best job they can, and is quite unsafe for your car.

I won't recommend tossing things at the car and hope it fix the problem either.

Good luck, you have a mean car already.