Tuning Is Stupid

[Jacek]

Hey guys,

I dont understand why my car goes stupid with knock. My o2 trims I have tested between 60%-130% for low throttle and nomattter what, around 2500/2700 to 3000 rpms, the knock goes ballistic up into the low 40s. I dont understand it at all and if anyone needs more information I will be of course happy as hell to dish out more to solve this problem which makes me want to sell this pile of shit. For my setup, I have 2gmaf (turned all the way in), 550s, walboro fp, afpr set at 40psi, safc, mmcd program for logging on a palm (which sucks shit btw). If anyone needs anymore information please tell me.

Thanks,
Jacek

[1ViciousGSX]

What boost are you running? Is it FWD or AWD? Any lifter noise? Intercooler? Engine temps? What spark plugs are you using and what is the gap?

[Jana]

Jacek, you just need to come up here and have it tuned on the dyno. ;)

[Goat Blower]

Change your oil and test it again.

[Jacek]

problem is it has done this even before my last oil change (1K miles ago) and i have never been able to understand why. my car is 92 awd with 19c, fmic. I am using ngk plugs (dont remember part #) gapped at .028. the and the temps are normal. car is rather quiet engine wise besides an exhaust leak but piss on that. it doesnt matter if i have my boost set at 8 or 18 at about 18-25% throttle she goes stupid. my

[john]

Could be phantom knock. Do another log. When you step on it do you start knocking right away (high counts)? If so, try it again, let off quick, and step on it right away and see if some of it goes away. Do this very quickly. If knock count drops or disapears, it is probly phantom knock caused by too much carbon in the combustion chambers. MCCC would fix that as it did for me.

[Jacek]

That is something I have done before to see what is going on and so I will do use the MCCC.

BTW, what is MCCC?? ;)

[Jakey]

Originally posted by Jacek@Jul 13 2004, 06:14 PM
That is something I have done before to see what is going on and so I will do use the MCCC.

BTW, what is MCCC?? ;)
These threads should help you out Jacek:
http://www.dsmstyle.com/forum/index.php?sh...ic=1362&hl=mccc (http://www.dsmstyle.com/forum/index.php?showtopic=1362&hl=mccc)
http://www.dsmstyle.com/forum/index.php?sh...ic=1317&hl=mccc (http://www.dsmstyle.com/forum/index.php?showtopic=1317&hl=mccc)

[john]

Mopar Combustion Chamber Cleaner. It is sold at dodge dealers, maybe others. Got rid of my knock problems.

[Jacek]

I did a combustion chamber cleaning and it didnt do a damn thing. :razz2: