so im having a problem with my car. during wot at around 5k rpms my car hits a wall. adjusting the afr does nothing to the problem. after datalogging it shows that my car has 1* of knock at that same area. does anyone have any idea of why this is happening? i cant figure out how to post a datalog so i couldnt show you what im talking about. someone please help me!
mods,dsp, e1 turbo, fm wg (pcm controlled), stage 2, agp returnline, 3" side exit, k&n intake.
you need to know exactly what is going on at that moment, what the AFRs are, intake temp, boost, rpm, throtle angle with out that info all you can do is "hack tune" and put band aids on it (add fuel remove timing)
so im having a problem with my car. during wot at around 5k rpms my car hits a wall. adjusting the afr does nothing to the problem. after datalogging it shows that my car has 1* of knock at that same area. does anyone have any idea of why this is happening? i cant figure out how to post a datalog so i couldnt show you what im talking about. someone please help me!
mods,dsp, e1 turbo, fm wg (pcm controlled), stage 2, agp returnline, 3" side exit, k&n intake.
Sound like you have issues with the COT. Send us your tune and we will shut it off for free as well as adjust the knock sensor settings.
If you have the time to call us (try around 3pm PST) and I can walk you through the process for creating a datalog.
i had a boost leak and i fixed it then i got this "wall" problem. i just replaced my plugs and gapped them at .034.
Hmm, the fact that is showing up after fixing a boost leak makes me still be suspect of the plugs. I have seen some guys running .032 and even .028 on stg 2/3 cars making lots of boost.
I read somewhere the "rule" to following is go as wide as you can without blow out, if you are getting blow out lower the gap.
If it was me I would re-gap lower just for shits and giggles and if that does nothing than I am sure PTP will have a better answer.
I maybe over simplifying things though, I tend to try and find the simplest solution first and start adding time and money as they "easy" fixes fail.
I assure you it isn't COT since I already disabled it. I have the logs to prove it. As for the KR sensitivity I left it alone seeing as it is a STG2 PCM and already has reduced sensitivity.
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Hmm, the fact that is showing up after fixing a boost leak makes me still be suspect of the plugs. I have seen some guys running .032 and even .028 on stg 2/3 cars making lots of boost.
I read somewhere the "rule" to following is go as wide as you can without blow out, if you are getting blow out lower the gap.
If it was me I would re-gap lower just for shits and giggles and if that does nothing than I am sure PTP will have a better answer.
I maybe over simplifying things though, I tend to try and find the simplest solution first and start adding time and money as they "easy" fixes fail.
you do make a great point. i will take care of the gap tomorrow and maybe the rain will hold off so i can see what it does. i know that it has to be something simple due to the fact that a friend of mine is having the same problem with different mods. he lowered his boost to about 15 psi and it stopped the "wall" until 120mph. just seems a little odd that we're both doing it. im waiting to see what ptp has to say about my tune that i sent them. this is a very frustrating problem to have. thanks for everyone's help.
I assure you it isn't COT since I already disabled it. I have the logs to prove it. As for the KR sensitivity I left it alone seeing as it is a STG2 PCM and already has reduced sensitivity.
hmmm lets see,,,, baseless speculation and unscrupulous solicitation akin to ambulance chasing. nothing wrong with that, its good for buisness right? well just until you get called out and then you just come across as a dbag.
Last edited by duster360 : 10-05-2009 at 09:54 PM.
ok so i regapped my plugs to about .028 and took the car for a run and it let me go over 5k. i turned around and tried it again and i hit the "wall" again. im not sure what plugs i have all i know is they are ngk plugs. i guess im going to buy new plugs tomorrow. this is getting old, hell im ready to put a price tag on my car. i think its strange that i didnt see this problem until after i fixed my boost leak. i didnt change anything on the car or with the tune and after the repair i had this problem at 5k. im in the serious need of help.
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why does my car do this. help please!
well just until you get called out and then you just come across as a dbag.
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