WTF????
Thread Starter
3rd Gear Member
Joined: Jan 2007
Posts: 544
From: maryland
WTF????
I have a stage 2 procharger (10 lb pulley) and it pulled really nicely and had all sorts of power but i got mac lt headers, and a prochamber h-pipe put on and now it only runs 6lbs of boost and it is dogg slow...does anyone know if this seems right or not?
3rd Gear Member
Joined: Nov 2004
Posts: 905
From: Bayside, New York
RE: WTF????
If your belt is slipping, that will drop boost. Iguaranteethe noisewill be noticablefor it to drop off 4psi. It will make a high pitch screchingthat sounds nasty. If that is it, tighten your belt. If it doesn't tighten, get a smaller belt. Before you do that, check your tensioner.
Check your inlet pipe connections -- clamps, vac lines etc. Check your MAF clamp--check everything. Run your engine and usesoapy water bubbles on anything that looks like it can leak. You will see the bubbles moving if something is not right.
Check your inlet pipe connections -- clamps, vac lines etc. Check your MAF clamp--check everything. Run your engine and usesoapy water bubbles on anything that looks like it can leak. You will see the bubbles moving if something is not right.
5th Gear Member
Joined: Jul 2003
Posts: 3,451
From: United States
RE: WTF????
ORIGINAL: prochargedGT
yes it has a bypass valve
yes it has a bypass valve
You can do a quick rundown for leaks if you disconnect the vacuum line from the from the bypass valve and cork it on the intake side so you have no vacuum leak, then run your hand by the piping for a leak even the intercooler if you have one. You should always have boost in the intake tubing before the throttle body as long as the throttle body is closed and the bypass is disconnected
Look around the s/c pulley for anything that looks darkened. (rubber)from the belt slipping). Sounds like a leak rather than a slipping belt if it stays at a constant 6psi after it gets up to 6. What does the boost gauge do when you put it in 3rd & go from 2k rpm to redline. (if you can find a safe road to test on). Don't do it if there's a chance to get caught.
Maybe someone stole your pulley & put theirs on your car....
Hey it could happen. [&:]In any case this shouldn't be too hard to figure out at all.
3rd Gear Member
Joined: Nov 2004
Posts: 905
From: Bayside, New York
RE: WTF????
ORIGINAL: FoxGT
Make sure the vac line on it didn't get unplugged when you were installing the exhaust. I think you've done something while installing them, spilled something on the belt, disconnected some of the intake tubing to get to some bolts, disconnected something on purpose or accident. Double check everything. If you can't find anything
You can do a quick rundown for leaks if you disconnect the vacuum line from the from the bypass valve and cork it on the intake side so you have no vacuum leak, then run your hand by the piping for a leak even the intercooler if you have one. You should always have boost in the intake tubing before the throttle body as long as the throttle body is closed and the bypass is disconnected
Look around the s/c pulley for anything that looks darkened. (rubber)from the belt slipping). Sounds like a leak rather than a slipping belt if it stays at a constant 6psi after it gets up to 6. What does the boost gauge do when you put it in 3rd & go from 2k rpm to redline. (if you can find a safe road to test on). Don't do it if there's a chance to get caught.
Maybe someone stole your pulley & put theirs on your car.... Hey it could happen. [&:]
In any case this shouldn't be too hard to figure out at all.
ORIGINAL: prochargedGT
yes it has a bypass valve
yes it has a bypass valve
You can do a quick rundown for leaks if you disconnect the vacuum line from the from the bypass valve and cork it on the intake side so you have no vacuum leak, then run your hand by the piping for a leak even the intercooler if you have one. You should always have boost in the intake tubing before the throttle body as long as the throttle body is closed and the bypass is disconnected
Look around the s/c pulley for anything that looks darkened. (rubber)from the belt slipping). Sounds like a leak rather than a slipping belt if it stays at a constant 6psi after it gets up to 6. What does the boost gauge do when you put it in 3rd & go from 2k rpm to redline. (if you can find a safe road to test on). Don't do it if there's a chance to get caught.
Maybe someone stole your pulley & put theirs on your car....
Hey it could happen. [&:]In any case this shouldn't be too hard to figure out at all.
Retired MF Moderator
Joined: Aug 2004
Posts: 14,891
RE: WTF????
ORIGINAL: janine
I am impressed. Your on this game well. I placed all this into memory.
ORIGINAL: FoxGT
Make sure the vac line on it didn't get unplugged when you were installing the exhaust. I think you've done something while installing them, spilled something on the belt, disconnected some of the intake tubing to get to some bolts, disconnected something on purpose or accident. Double check everything. If you can't find anything
You can do a quick rundown for leaks if you disconnect the vacuum line from the from the bypass valve and cork it on the intake side so you have no vacuum leak, then run your hand by the piping for a leak even the intercooler if you have one. You should always have boost in the intake tubing before the throttle body as long as the throttle body is closed and the bypass is disconnected
Look around the s/c pulley for anything that looks darkened. (rubber)from the belt slipping). Sounds like a leak rather than a slipping belt if it stays at a constant 6psi after it gets up to 6. What does the boost gauge do when you put it in 3rd & go from 2k rpm to redline. (if you can find a safe road to test on). Don't do it if there's a chance to get caught.
Maybe someone stole your pulley & put theirs on your car.... Hey it could happen. [&:]
In any case this shouldn't be too hard to figure out at all.
ORIGINAL: prochargedGT
yes it has a bypass valve
yes it has a bypass valve
You can do a quick rundown for leaks if you disconnect the vacuum line from the from the bypass valve and cork it on the intake side so you have no vacuum leak, then run your hand by the piping for a leak even the intercooler if you have one. You should always have boost in the intake tubing before the throttle body as long as the throttle body is closed and the bypass is disconnected
Look around the s/c pulley for anything that looks darkened. (rubber)from the belt slipping). Sounds like a leak rather than a slipping belt if it stays at a constant 6psi after it gets up to 6. What does the boost gauge do when you put it in 3rd & go from 2k rpm to redline. (if you can find a safe road to test on). Don't do it if there's a chance to get caught.
Maybe someone stole your pulley & put theirs on your car....
Hey it could happen. [&:]In any case this shouldn't be too hard to figure out at all.
