having problems above 5-6psi
11-18-2003, 04:40 PM
#1
1.0 BAR
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Join Date: Apr 2003
Posts: 325
having problems above 5-6psi
ok so i'll drive down the road accelerating very lightly and it sits at 5-6psi, then when i give it more gas the boost goes up and it makes this loud bang noise. the car runs fine until it gets above 6psi. i read in another post that it was prolly misfiring so i followed what it said and rebuilt my dizzy with new cap, rotor, and ignition module. i didn't gap the plugs to .03 though. do you think that gapping the plugs would make the much difference? i thought it might not be getting enough fuel so i ordered a walbro 255. im running a zdyne with 450's. also after i turned the car off i checked the spark plugs and they were a golden color. any help would be greatly appreciated. trying to get pics up soon!
11-18-2003, 08:06 PM
#3
1.0 BAR
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Join Date: Apr 2003
Posts: 325
Re:having problems above 5-6psi
im pretty sure im using the baseline tune for pm6 with forced induction retard. i think all i changed was retarded the timing a little more, and enriched the fuel table alot. i'll gap the plugs tomorrow and see what happens.
11-18-2003, 11:06 PM
#5
1.0 BAR
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Join Date: Apr 2003
Posts: 325
Re:having problems above 5-6psi
ok i just gapped the plugs and went down the road and it did the same thing but just not as bad. but when i got back, i looked at the turbo and it was glowing red. it scared me. could running to rich cause it to do that?? why would it do that
11-19-2003, 12:24 AM
#7
0.5 BAR
Join Date: Nov 2003
Posts: 122
Re:having problems above 5-6psi
for sure your turbo will glow red when u r running too rich. possible your spark is too weak, i just assume u have stock ignition. u need s stronger spark if u have more air and more fuel going into your engine.
11-19-2003, 02:00 AM
#8
0.5 BAR
Join Date: Apr 2003
Posts: 71
Re:having problems above 5-6psi
I think i got an e-mail from you, but anyway I now get some sort of idea what kinda set up u have. set the timing back to stock or whatever the zydine recomends.and since the zydine is set up for boost u shouldn't have to richen the mixture any so get it back to what ever is recommended there too. if you aren't using colder plugs get those too. You need the larger pump too. And lastly dont attempt to tune your car(change timing, fuel, or cam timing,etc.)further than the zydine is set for until you get it on a dyno.This way you really see what the engine is doing. Seat of the pants and hear-say tuning can only go so far and usually lead to blown engines. Every engine is different and so should its tuning be. The program you are running is one that gives you a good safe starting point until further proper tuning is possible.
