Please can you guy's tell me if ya come across poor boost on second turbo! I've have the PFC set to 12psi. The first Turbo 12psi, then the second turbo hits 4psi. Crap power!

I would just like to know if this fault if common with stock twins?

What is the remedy?

Thanks

Time to go single to4e


1994 UK SPEC
PFC
PFS IC
3MM HURLEY SEAL
STREET PORT
ACT CLUTCH
G-REDDY DP
HIGH FLOW CAT
RACE BEAT CAT BACK
12PSI ON STOCK TWINS
NO 1/4 YET

 

I would have to say that low secondary boost is one of the most common problem on the stock twins. Troubl;eshooting can be lengthly. You should go to:
http://www.scuderiaciriani.com/rx7/how-to_turbos.html

for details.

 

when i get low boost during the secound turbo, its usually caused by a hose that poped off the vacuum chamber.

 

Definitely a vacuum or solenoid problem. I've been suffering from the same, if not similar. Couldn't be any problems after the turbos since you mentioned you make 12psi before transition. Try taking off the intake manifold and performing a visual inspection of the vacuum lines. If that doesn't help, then perhaps a pressure test on various vacuum lines. Best of luck to you.

 

Thank for all your help guy's

The problem was a Blocked high flow cat! Think he had to smash that cat to unblock it! So theres no cat now! Maybe a few more ponies?

Thanks

 

How the hell did the HF-cat get blocked? How long has it been on there?

 

CAUSE: Air flow pump failed!


Regards...