Mods: buschur turboback exhaust with high flow cat and magnaflow muffler, k&n panel filter and custom dynoflash.

I added a manual boost controller after the flash and been having nothing but problems. At the track I couldn't even surpass 17 psi in all the gears. But when I'm on the streets it spikes to 21 in 1st gear, but all the other gears it only spike to 16 psi. At wot in 4th or 5th gear from 50 mph it would spike to around 21psi and fall off to 15 psi.

Is it because I added the mbc after the flash? btw the the bc is hooked up to the wga and to the turbo outlet. need help.

 

What KIND of boost controller did you add? Sounds like a bad boost controller or a bad install or both

 

I had a buschur one before this and it was spiking to 23 psi and hold at 21...now I got an ams on and that is what it is doing as stated above in the 1st post. BTW when I hook up the two lines going to the boost control together, it runs normal.

 

I think you need t o take your car to a shop and get it checked for boost leaks and or other issues with your boost controller install the Buschur and AMS mbc's both work great and your problem seems more mechanical

 

Can you clarify - did you take the hoses from the OEM boost control solenoid and hook them to the MBC,
or did you run new hoses ???

I ask because those stock hoses have those little restrictors in them.