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**asshanson** · 09-21-2006

I have a 96 Tsi with a 3" exhaust and an FP T-28 turbo. I run about 18 lbs of boost, but it doesn't hold - it fades to 14 by redline.

I've checked for boost leaks, 99% sure there isn't one. I've changed boost controllers, same thing happens. I actually tried a broken boost controller too and it didn't limit the bost, so it went to 25 almost instantly at 3500 rpm and I let off.

What else can cause this? I assume the T-28 can hold over 18 until redline, so I doubt that's the issue.

Any ideas???

09-21-2006	#1
asshanson immune from paybans Join Date: Oct 2005 Location: West Des Moines Drives: poorly Posts: 4,358	Boost fade I have a 96 Tsi with a 3" exhaust and an FP T-28 turbo. I run about 18 lbs of boost, but it doesn't hold - it fades to 14 by redline. I've checked for boost leaks, 99% sure there isn't one. I've changed boost controllers, same thing happens. I actually tried a broken boost controller too and it didn't limit the bost, so it went to 25 almost instantly at 3500 rpm and I let off. What else can cause this? I assume the T-28 can hold over 18 until redline, so I doubt that's the issue. Any ideas???