I installed new turbo's, down pipe high pref. cat etc. When I took it for a ride I was ready to rock. One small problem at 4500 rpm's the boost went from 8-10 lbs to 0 lbs. In any gear over 4500 boost is 0. At 0 boost my riding lawn mower can pass it. Any sugestions would make my day.

Houston we have a problem !!!!!!!!!!!!!

Brian

 

Turbo Control Actuator c-clip probably fell off. same thing happened on my friends car. jack up the car it is the lower most actuator. big shiny thing with a rod coming out of it... very easy to spot. i thank my buddy ashraf for the info (twin turbo guru)

 

Thanks for the reply, however the clip is still there.

Brian

 

Welcome to hell. I suggest searching this forum for anything related to your problem. I bet you there are more posts on this subject than there are Mc Donalds in this world.

What makes your problem such a problem is that you replaced your turbos. There is a big chance that you didn't route the vacuum lines correctly, or that you attributed your earlier problem to bad turbos without addressing the system as a whole.
If you replaced your turbos because you thought they were a problem, take a look at your turbo control solenoid on the vacuum side. It is prone to fail before most other solenoids.
Without getting into all the details again and again, please do your self a favor and search using most of the words you used in the subject line.

 

if the vacuum hose pops off from the vacuum cahmber right after the alternator the car wont boost the secondary turbine and what spooldup7 said

 

Here's a useful link for sequential troubleshooting

http://www.autosportracetech.com/RX-7/rx7stuff.htm

 

LAracer I took your advice and checked into the link you provided. After reading this info I feal I can dial things in, I had already started to trouble some of the stuff and have come to the conclusion the the vaccum hoses are left over from the stone age. Hard as a rock and can be used as nails for home remodeling. It's refreshing to comunicate with someone who cares and dosen't ware their ego as a bagde.

Thanks Dude You Rock !!!!!!!!

 

OOOPPPSSSS BAGE

 

Yo LA small world I bought my RX7 from ALB, NM in Aug.2003, A/C did not work at the time what a hot ride to Houstonv Tx.