Exhaust leak.
Update to my "no/low boost" problem
Update to my "no/low boost" problem Well we pulled one header off last night and it was bad, exhaust had blown past it almost everyplace and it was totally destroyed, also put in the 13.9psi springs, so there is still one leaking header gasket left.
Took the car out for a test drive and it jumped up to 9psi on the gauge fast, before it would only go to 7 and even that took too long, so tonight I will fix the other header and we are hoping for a full 13psi
Took the car out for a test drive and it jumped up to 9psi on the gauge fast, before it would only go to 7 and even that took too long, so tonight I will fix the other header and we are hoping for a full 13psi
Last edited by frcefed98; Jul 6, 2007 at 03:53 PM.
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Originally Posted by frcefed98
Originally Posted by Inspector12
Ha Ha! You nailed it right off the bat LOL! Good call! Glad you got your boost issue fixed.
But we have a few theories as to what the problem is.
1: Too low comp ratio (7.9:1) and too little timing (18deg in boost)
2: Bad coil packs
3: Overall timing is off or timing is walking, I'm not logging cam sync errors though so this is not likely from what I understand
On my current setup I found a major boost leak around my BOV's. My car felt way down on power and my Blitz Boost Gauge was still reading I was getting good boost via the recording, but it was coming on slow. Turned the boost gauge completely off and noticed I was getting 10psi of boost but it was stressing to make that. We put the car on the dyno and realized I was down by almost 200rwhp. Pulled the car off the dyno and put the car up on a lift to see if we could find a visual break in one of the hoses or lines. We did not see anything. Decided to pressurize the system and wallah. The air was blowing out of the BOV's. I replaced them with the recommended ones per my tuner in Michigan and put the car back on the dyno and picked up my missing rwhp.. Now I am back to troubleshooting my possible valvefloat issue..
Simple enough to log cam syc errors, make sure and double check your timing mark is correct and use a different light to verify. Most cars I have seen have the crank reference around 350*
Cam sync error is like a rev limiter, the engine just stops at whatever rpm. If you suspect that turn it off in the config menu and seee what happens.
Cam sync error is like a rev limiter, the engine just stops at whatever rpm. If you suspect that turn it off in the config menu and seee what happens.
The car revs high as I want, and there are no boost leaks as we have pressurized the intake pipes to 40psi and they hold pressure.
We have used a timing light to verify the timing, but not under load. Might have to put it on a dyno and check that
We have used a timing light to verify the timing, but not under load. Might have to put it on a dyno and check that
Originally Posted by kp
I would still double check it, even with a stop you can be off. What did you get for crank reference?
