ASP Pulley
Thread Starter
Newbie
Joined: Aug 2002
Posts: 13
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From: Chicago , IL
C230K Brilliant Silver with C2, C7 and Bose system with 6-Disc Changer
ASP Pulley
Today ,finally, ordered ASP Pulley. Can't wait.
But there is a problem though. I thougt all you need to do was change the fuel setting in ECU from whatever MB had to Stage 2 or 3 after a pulley installed.
Isn't it right? Or is there something else you need to adjust as far as F/A concern?
Buellwinkle, since you are the expert on the pulley, I need your experties on that.
It can effect your new car warranty but they would have to prove that the pulley caused the damage. If the pulley wasn't on there when you brought it in, it would be harder to prove. In over a year that I've studied these pulley kits I've only heard of two failures and they were both related to the S/C and not the engine. One had a S/C seal leak and the other created a click-clack noise but no effect in performance.
""Assuming you got the alloy pulley, you will notice a huge improvement. Gives the car wings. My torque went up by 35 and horsepower by 29 when I put the ASP alloy pulley on and the Kleemann should be as least as good. Please make sure to have the the a/f ratio checked on a dyno under load before and after to make sure you are OK. I had to have ECU settings changed for fuel and
???timing??? to make it right but even then I won't really know if it worked until a Monday night dyno session. Ideally you want to not go over 13:1, I was pushing 15 in spots. Also what helped performance was an ITG airfilter, at $51 it's a small investment for a few extra ponies.
Good luck. Display your dyno results when you get it done. ""
Above came from BensWorld forum, this is what got me worried.
What timing were you talking about?
But there is a problem though. I thougt all you need to do was change the fuel setting in ECU from whatever MB had to Stage 2 or 3 after a pulley installed.
Isn't it right? Or is there something else you need to adjust as far as F/A concern?
Buellwinkle, since you are the expert on the pulley, I need your experties on that.
It can effect your new car warranty but they would have to prove that the pulley caused the damage. If the pulley wasn't on there when you brought it in, it would be harder to prove. In over a year that I've studied these pulley kits I've only heard of two failures and they were both related to the S/C and not the engine. One had a S/C seal leak and the other created a click-clack noise but no effect in performance.
""Assuming you got the alloy pulley, you will notice a huge improvement. Gives the car wings. My torque went up by 35 and horsepower by 29 when I put the ASP alloy pulley on and the Kleemann should be as least as good. Please make sure to have the the a/f ratio checked on a dyno under load before and after to make sure you are OK. I had to have ECU settings changed for fuel and
???timing??? to make it right but even then I won't really know if it worked until a Monday night dyno session. Ideally you want to not go over 13:1, I was pushing 15 in spots. Also what helped performance was an ITG airfilter, at $51 it's a small investment for a few extra ponies. Good luck. Display your dyno results when you get it done. ""
Above came from BensWorld forum, this is what got me worried.
What timing were you talking about?
Super Member
Joined: Jan 2002
Posts: 875
Likes: 1
From: Los Angeles
2002 c230k
That post was by Buellwinkle under another name in Bensworld so take it for what its worth. Your A/F should be less than 13:1 when measured before the cat, after the numbers dont mean squat even with the 'correction' factor as all cats are slightly different and things like temp and age make a big difference in their function. Have the computer set to stage 3 fuel delivery to be on the safe side.
Remember, if your A/F is bad that the air filter will make it worse as more air gets in.
Remember, if your A/F is bad that the air filter will make it worse as more air gets in.
Thread Starter
Newbie
Joined: Aug 2002
Posts: 13
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From: Chicago , IL
C230K Brilliant Silver with C2, C7 and Bose system with 6-Disc Changer
What should I do?
mdp c230k, Thanks for reply.
You mentioned about getting more air by having air filter maybe such as ITG, what should I do to my car after pulley and air filter installed?
Is there simple answer?
Setting fuel stage to 3 would solve the problem or just forget about the whole thing.
What would be the solution?
You mentioned about getting more air by having air filter maybe such as ITG, what should I do to my car after pulley and air filter installed?
Is there simple answer?
Setting fuel stage to 3 would solve the problem or just forget about the whole thing.
What would be the solution?
MBWorld Fanatic!
Joined: Nov 2001
Posts: 6,211
Likes: 2
From: Laguna Niguel, CA
According to two sources, changing the fuel settings to stageut 2 or 3 will solve the A/F problem. I had mine set to Stage 3 but I can't verify it until I get dyno time and Evosport put me off until Monday. Every area has different climatic and altitude effects on a/f ratio. Setting it to Stage 2 vs. Stage 3 would depend on what a/f ratio you get. The optimal performance is somewhere around 13. A little richer is safer but you lose a little performance so I opted for Stage 3 for the richest setting. Anything you do to make it breath bette, exhaust, intake, airfilter will cause it to run leaner so if you plan these mods anyway, definetly go for the richer setting.
The ignition settings are based on fuel octane settings and since I can only get 91 octane, I've had mine set to 91. If you get 93 then by all means, set it to 93. This has nothing to do with the pulley and a/f ratio.
The ignition settings are based on fuel octane settings and since I can only get 91 octane, I've had mine set to 91. If you get 93 then by all means, set it to 93. This has nothing to do with the pulley and a/f ratio.
Thread Starter
Newbie
Joined: Aug 2002
Posts: 13
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From: Chicago , IL
C230K Brilliant Silver with C2, C7 and Bose system with 6-Disc Changer
Hopely that'll be OK.
Thanks Buellwinkle.There is 93 gas around my area.
Hopely that will help it but
I will definetly dyno it , and see what I will be getting on F/A ratio.
Super Member
Joined: Nov 2001
Posts: 557
Likes: 1
From: San Diego
99' SLK 230 & 01' CLK 430
That's funny !!! Six months ago, no one seem to know or care about A/F ratio and all the pulley manufacturer seem not to want to discuss about A/F ratio with their's pulley. Let me just put it in another word, they all make us think that there's no problem with the A/F ratio when install their's pulley. Now, everyone seem to worry about A/F ratio when install pulley...lol. I wonder, who's the wistle blower !!!!
Last edited by linh; Aug 15, 2002 at 10:29 PM.
