Having a problem with my turbos, in first gear i do not get any boost at all. When i am in second gear i get boost around 3.5k-4k. I did not do a non-sequential setup. The turbos and motor has 26k miles on them. Compression on the motor is excellent. Only thing i could think of is vaccum leak somewhere.

thanks

 

Remove and inspect ALL of the larger flexible boost couplers (hoses) from the Y-pipe to the elbow. They often split and seeing the failure is often impossible w/o removing them, flexing them, turning them inside-out, etc.

 

There's tons of things that can cause the stock sequential twins to function abnormally. All of this has been covered before so here are the write-ups that I use when I have boost issues:

http://rx7.voodoobox.net/howto/solen...oid_check.html
http://www.autosportracetech.com/RX-...leshooting.htm
https://www.rx7club.com/showthread.p...ntrol+actuator

 

Almost sounds like the wastegate is staying open. Check to make sure the rod on the actuactor is still connected to the flapper door for the wastegate. If it is still connected make sure the door is closed all the way when the car is off.

David

 

Thanks for the replies. Now i have another problem. It seems that i get fuel cut at 10lbs of boost. I have my manul boost controller turned to the lowest setting possible. Unless my boost gauge is reading my boost wrong or something but i do not know why im getting fuel cut around full boost of 10lbs.