Are your secondaries openning? The whole plot looks slow...I say malfunction or major intake deposits! Sorry to flame but remove the UIM/LIM, clean them, and do some more mods...or just buy the whole turbo kit, and avoid the aggrivation of not being satisfied after you've performed all your N/A mods.

I've beeen there and done that!

2002 ZO6...462whp/410wtq pretty darn fast!11.70 @ 122 silver/black 2006 Trailblazer SS(wifes car) silver/black 2000 SVT-Turbo-sold silver/blue #1699/2150 13.83 @ 102.82 on 5psi 13.51 @ 107.56 on 8psi