I bought it a while ago, but never used it since the car boosted OK, but after performing a full vacuum hose job on my car (has a DP and RB intake duct/K&N air fliter), I started to get boost spikes at transition (12psi when the secondary comes on WOT), so I figured that I'd install the TurboXS to reduce the boost a little. After setting the controller to it's "lowest" boost setting, I took the car out and it hit 13psi on the only 3rd gear WOT test I did. Took it home and blew threw the controller and airflow was even more restricted than the stock pill. Moreover, adjustments to the boost controller didn't have any impact to the airflow... What a POS!

So I think I'm gonna go with a manual bleed valve or a ball-spring valve. Anybody using one with good results?

Thanks!

 

https://www.rx7club.com/3rd-gen-archives-73/my-boost-control-setup-perfect-10-8-10-pattern-242324/

 

Mahjik, thanks for the link. Being a relatively cheap bastard (not good if you own an FD, but then again after owning FDs for the last 6 year, it does make you poorer ), I decided to try a more generic looking boost controller with a spring-and-ball design. Sure it doesn't look as trick as the Hallman controller, but it was considerably cheaper and should work exactly the same. I set it up very conservatively (6 threads showing above the lock nut) to start out with and BAM, perfect 10-8-10! No adjusting whatsoever. Finally done with my FD longevity project and couldn't be happier with the way my 104k mile (original engine) car is running.

Thanks again!