No more than 8lbs of boost..

Jush · Post by **Jush** » 22 Jan 2014, 10:40

I am having a problem with low boost I can not seem to fix, I am getting at most 9lbs. I have a 97 GLT but I happened to come across a 95 turbo ECU so I plopped that in hoping it would spruce up my boost pressure, and to no avail (although the car is faster, still low boost pressure). I have tried everything from tightening the wastegate to eliminating the TCV altogether. I can not find the source of my low boost pressure. ANY advice will be helpful. (my current wastegate is off of a newer xcv70 since mine had been spun at some point and was no longer operating properly)

Thanks
Josh

c70_lindsay · Post by **c70_lindsay** » 22 Jan 2014, 18:31

I'm not quite sure about the 850 specifics, how much boost is an 95 turbo supposed to run? It may only be 8lbs of boost.

Jush · Post by **Jush** » 23 Jan 2014, 09:35

I've heard people get upwards of 10, around 15 and I would be happy, I just don't know what is preventing it from increasing pressure with all the things I've done.

Post by **matthew1** » 28 Jan 2014, 03:10

A GLT is a low-pressure turbo, so 8 is correct. If everything is Stage 0, I'd run a manual boost controller, but be warned: it's not if you'll blow your engine but when. Your 850's engine was not made for much more than 8 pounds boost. Yes, there is some margin, but with a nearly 18-year-old engine, anything can happen.

1998v70xcbill · Post by **1998v70xcbill** » 01 Apr 2014, 01:02

Matthew1 is right on wiht +8 psig. Go 10% higher at most "at your own risk". Mine pull to high rpms no problem and it's a v70xc.

Bill