crazy boost spikes at 12psi stock vacum lines

[irr5302]

my msp have

udp

panel kn

ground wires

not boost controller



for14999 miles the car spikes hot temp 90 to 100 oF 8.4 psi

9psi cold

at 15000 miles to 16632 right now and after the rear motor mount installation

my car run how beast for all this time im not possible ride at WOT
because the spike is very high 11 to 12 psi

Im remove the sbc id blitz and claim warranty in the part because dont hold stock boost level

Im returned all to stock and the crazy spikes continue.


any help>>>>>>>>>


Today kick civic 3doors with 1.8vtec installed by four cars
at 12psi the msp pull how at devil bull...

[DiscreetSpeed]

yes take that bioch in to the dealer....thats weird though

[DaKidd]

sounds like ur waste gate is faulty or u have a crimp, or a "bottle neck" in the vac line from the manifold to the waste gate... Make sure that u didnt use a smaller line or tee to splice into the larger waste gate vac line... just my $0.02

[irr5302]

Thanks

all the original vacum line and the T is stock