Right short of just biting the bullet and doing the 400mile round trip to a rotary specialists is there anything else i can check to solve my top end boost issue.

Boost is dropping off almost straightaway on the second turbo, I get a solid 0.8kg/cm on the primary a clean changeover then back up to 0.8kg/cm on the second for a moment but drops off to 0.5kg/cm and holds till redline.

The car is 5k on rebuilt with rebuilt turbos with a nur spec backbox and reloaded hks filters otherwise totally stock.

This has been a problem all the time i have had the car and it annoys the hell out of me as it feels like a struggle to get to redline and i am shifting up early to keep in the power.

I have changed/checked the intake and intercooler pipes/changed the cat to a brand new one. Plugs/oil/filter all done withing the last 1k. The full standard exhaust was fitted and again it was still the same

What i dont understand is if it was a leak wouldnt i see low boost on both turbos, as on the first its rock solid????

Change all the check valves for viton replacement maybe?

Any ideas guys, help me out


Neil

 

I have learned a ridiculous amount of information from this site:

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

randy