General TechUse this forum for questions which just don't fit in any one category. Do NOT use this forum as a "dump-all" for threads or any off-topic conversation. Please try and start threads which have a clear subject in their appropriate section!
canadaGTP holds the following arcade championships:
None.
Getting high Knock on scan guage Help!!
Hey Everyone
I Have a 1998 Grand Prix gtp and when i have the car at WOT i get knock
at normaly around 3* but it spikes to 10* at shift points , could anyone tell
me what could be causing some of this .
My car has The 5Gen supercharger,overkill pcm, fenderwell intake , SS intercooler, PLOG, downpipe, high flow cat, autolites, 180thermo ,3.3 pulley, 3.5 pulley
am running the 3.3 pulley at the moment and am getting this kind of knock , i thought i would be running next to none with this set up and intercooler
I put back on the 3.5 and my car still had knock but not as much any idea what could be causing it
canadaGTP holds the following arcade championships:
None.
I had the PCM tuned custom by overkill , do you think it could still be causeing the problem? also gas is always 91 oct + , could it be that cold weather is bringing on this knock?
foxrider152 holds the following arcade championships:
None.
from what he says he has plenty enough exhaust work since he is running an i/c he shouldnt be getting any knock at all something in your tune is bad did they tune it in car? or was it mail order?
__________________
2003 Monte Carlo SS formally with top swap now l67 until i can afford a l26 , ported m90, 3.3 intense mps, tog headers to a magnaflow exhaust , ls1 t/b with ls6 maf, 255 Walbro fuel pump, fuel pump rewire, ZZP wires, ZZP volt booster, Eibach springs, 160 drilled t-stat,custom tuned pcm, and custom fwi
canadaGTP holds the following arcade championships:
None.
It was Not a mail order and was completely custom to the mods i have at the this time it was done by Will at overkill , the only thing that is slighty weird with the car is the idle the car surges at idle when its cold for a good 10 min reving from 800rpm to 1500rpm back and forth. once in gear it goes away and is unnoticable
Not sure if this is tune related or mabye even a possible vaccume leak
even if it was a vaccume leak witch i dont think it is would that cause KR?
think its time to upsize pulleys?
would the colder dense air this time year cause this?
dono is it helps but my MPG is pretty bad even driving sensibly around 16 mixed MPG
foxrider152 holds the following arcade championships:
None.
your o2 sensor is probly bad or a vacume leak but a 02 sensor would throw off a tune
__________________
2003 Monte Carlo SS formally with top swap now l67 until i can afford a l26 , ported m90, 3.3 intense mps, tog headers to a magnaflow exhaust , ls1 t/b with ls6 maf, 255 Walbro fuel pump, fuel pump rewire, ZZP wires, ZZP volt booster, Eibach springs, 160 drilled t-stat,custom tuned pcm, and custom fwi
foxrider152 holds the following arcade championships:
None.
im not sure about the readings but i think you can i just dont know what they would be
just pick one up from a parts store and try it if it doesnt stop take it back and say you never used it
__________________
2003 Monte Carlo SS formally with top swap now l67 until i can afford a l26 , ported m90, 3.3 intense mps, tog headers to a magnaflow exhaust , ls1 t/b with ls6 maf, 255 Walbro fuel pump, fuel pump rewire, ZZP wires, ZZP volt booster, Eibach springs, 160 drilled t-stat,custom tuned pcm, and custom fwi
Guests may only view the first page of a thread. You need to register to get full access. Click here to register.
Linear Mode
