I bought an homemade MBC on ebay a while ago, and i finally installed it this weekend, along with a brand new O2 sensor.
And holy shit, what a difference. It works perfectly, 10psi in every gear, no boost creep and such. I use to have a lot of bogging and on and off boost. I think the 02 sensor did a lot of good also.
Loving my car more than ever!!!
92 l swapped to ej22T with 2.0T shortblock
4.111 manual 2.5RS tranny, sti eng mount, wrx I/C, MBC, WRX turboback exhaust, WRX front seats, STI rad cap, WRX specR1 struts, Eibach springs , leg turbo front brake, WRX rear brake.
I'd be interested to hear if that even 10 psi in every gear turns into an even 13 or 14 psi in every gear, or if the boost spreads out between the gears as you raise it...
-Chris
91SS 4EAT stock, 200k mi
91SS 5MT rebuilt engine waiting for a shell
93TW 4EAT, Forester lift, 3" TBE, 11psi, 200k mi
94SS 5MT4.11+rLSD 311k km: RobTune550,TD05-16g @ 18psi,FMIC,3"TBE,Forester lift