Boost Leak Test = 0psi, Horrible Idle after rebuild

[Mikael SS]

The only way to keep the car running is over 2500rpms. Timing is set at 5*, new spark plugs, tps sensor seems to be right on based on the scanmaster, I'm having trouble with my DSMLink so for now i'm using the MAF Translator to accomodate for the 1000cc injectors. FP is set at 42psi.

A boost leak test starting at the intake elbow gives me nothing. I'm pumping in air at 100psi, and get nothing on the boost gauge, and can't find any leaks with water sprayed, can't hear anything.

I've capped off the PCV port, two of the vacuum ports, and the brake booster port. The only open port is the one on the drivers side(cyclone manifold) for the FPR + boost gauge.

Car got a new intake mani gasket, i never took the throttle body off so i didn't mess with that. New 1000cc injectors.

Can i not do a leak test with 272s? Does the car need to be at TDC? It seems like with the volume of air i'm pumping in i'd be able to see or hear something or get a few psi on the gauge. Could it be the the cyclone intake mani? I haven't done anything as far as making it functional.

The leak test from the turbo to after the GM MAF came out great, and i actually got 10psi of boost when trying to run the car.

I'm stumped, help me out guys.

 

[iwannagofast89]

more detail

 

[Mikael SS]

The only way to keep the car running is over 2500rpms. Timing is set at 5*, new spark plugs, tps sensor seems to be right on based on the scanmaster, I'm having trouble with my DSMLink so for now i'm using the MAF Translator to accomodate for the 1000cc injectors. FP is set at 42psi.

A boost leak test starting at the intake elbow gives me nothing. I'm pumping in air at 100psi, and get nothing on the boost gauge, and can't find any leaks with water sprayed, can't hear anything.

I've capped off the PCV port, two of the vacuum ports, and the brake booster port. The only open port is the one on the drivers side(cyclone manifold) for the FPR + boost gauge.

Car got a new intake mani gasket, i never took the throttle body off so i didn't mess with that. New 1000cc injectors.

Can i not do a leak test with 272s? Does the car need to be at TDC? It seems like with the volume of air i'm pumping in i'd be able to see or hear something or get a few psi on the gauge. Could it be the the cyclone intake mani? I haven't done anything as far as making it functional.

The leak test from the turbo to after the GM MAF came out great, and i actually got 10psi of boost when trying to run the car.

I'm stumped, help me out guys.

 

[jrohner]

If there is a leak that's EGR related, the air will probably be going right out the exhaust.

 

[snowborder714]

First of all, you shouldn't be pumping that much pressure in. I usually use around 50psi.

What type of boost gauge are you using?
How/why are you having trouble with DSMlink?
Why did you cap off the PVC, brake booster, and vacuum ports?
Do you have an mbc? If so, did you disconnect the source line from that and cap it off?
Are you sure you built your boost leak tester correctly and that it's not leaking?
Have you read this article?
http://www.dsmtuners.com/forums/art...-boost-leak-test-how-boostpro-net-tester.html