9-10 psi only???

[babyviper]

Well i built my girl freind a 97 gts spyder converted auto to manual . My problem is the car will not boost past 9-10 psi !!. mods are crower 264-272 14b turbo 7cm, willy 255 pump , afpr 43.5 psi.ngk non protruding 7es plugs 3' down piple 3' exhaust test piple on, hallman bc. jeff (dsm chips) chip. Iv done a boost leak test 10 times compression test from timing belt side is 145psi 175psi 177psi 170psi . Iv change 14b turbo with another one samething 9-10psi ?? it has no exhaust leaks!!!! (Iv even put vice grips) yes vice grips on the wastegate flapper on the exhaust housing The car is very slugish almost got walk by a scion tc Please Help

 

[Aproductions]

how did you hook up the mbc?

 

[babyviper]

The bottom of the bc i put the boost line off the j piple and the side the gate

 

[yepes281]

Have you tried a different boost controller? The one your using could be bad. Use a boost controller you know works FOR SURE. And make sure all the vacuum lines on the wastegate, bc, and j pipe are veryy tight.

 

[babyviper]

Its on right i try a friends slowboy bc samething. but beside all that i even lock the flapper door shut with vice grips too?? bud

 

[dsmlifestyle]

Are you still running the factory 2G BOV?

 

[babyviper]

Well I found out the reason why the car wouldnt go ova 9psi. After all these tests and changing all these parts, it was the ebay downpipe. apparently the flex pipe that was only 3-4 months old, the inside of it had collapsed. Ill post pics of it soon and start a thread called ebay downpipe causing low boost.