Pete3.2

Hey guys

I have the following boost readings

1st gear goes to only 10 pounds
2nd and 3rd gear spikes at 17-18, then as the rev go to redline around 4000rpm onwards it tapers down and holds boost at only 10 pounds.
Vacuum at idle is 20in and when the car is rolling 23ish.
Also the needle doesn't sit exaclty at 0 when the car is off, a little under it.

What are the normal reading meant to be in each gear.

I also looked on the top of the engine bay, couldn't find and vacuum leaks.

But i do hear a hissing sound coming from the drive side of the car. What are potential hose leaks on this side to look at?

Thanks,
This is really frustrating me.

Pete

Enclave

Need to know altitude and temperature.

Pete3.2

Ithaca, NY about 1000 ft above sea level, high 70*F, low 22*F

EricBss7_CT

That normal boost levels should be 19-20 psi. My car can't hold that at all. It will spike around 17-18 like yours but quickly drop to 13-14. I also find that I get a little better boost in warmer weather but realize I still have a problem somewhere. Like you said, keep checking for vac leaks, but I hear a hissing sound coming from mine too. I think the problem with my car is the wastegate actuator rod not being cant hold the boost. I'm not sure though so I'm not going to buy a new one for $170.00 seeing as how I plan on getting a whole new turbo anyways.

Silver Streakin'

wastegate is weak. ECS sells it for $170.