Whats wrong with my car??? VIDEO Boost leak? Coil Packs? CAS?

[braceyoself777]

YouTube - DSM bad clutch?
YouTube - Bad clutch DSM freeway pull
YouTube - dsm boost gauge

My mods are a 3'' turbo back exhaust w/ no cat and a 2g exhaust manifold. Pretty basic. Car feels like a slug and as you can see in the videos, WOT and no speed= WTF. Ruled out theres no problem with the clutch.

 

[doctor_shock10]

dude if you have a boost leak tester, do it and find that huge leak thats alot of vacuum while driving. see if one of your intercooler piping popped off or a cut in a boost line. good luck

 

[haswesley]

If you had a huge leak your car wouldn't build boost at all. Have you tried a leak test to see how much pressure you can build in the system? Try this and see if you can hear where the sudden leak is coming from. It seems you get to 12lbs. boost and you suddenly loose all pressure, immediately. Possibly you have a problem with the BOV or vaccuum hoses to the wastegate.

 

[cabbageman97]

Both my buddy and I have had a problem with the engine breaking up pretty badly in boost and above 4500rpm. Pull out your plugs and see what they look like. Cleaning mine off really well fixed the problem every time

 

[braceyoself777]

Plugs are new and gapped to specs. I will check for the boost leak though.

 

[braceyoself777]

What about plug wires? Although, I didn't really hear the engine break up at all...

I vote: Boost Leak

The stock ECU bin's fuel map targets low 10's for AFRs and at really high loads the target is in the 9's. If you've got a boost leak and your still running the stock MAF, your going to be even richer than 9's. BTW, at stock boost, DSM's are kinda sluggish.

The wires are new also...about a year and a half old. I'm going to have to check the ignition first because the car still boost fine. I'm gonna get new coil packs and also new wires. Spark plugs are still fine.