I just completed installing my new Buschur upper I/C pipeing and FMIC. I already have a RMR cone, RMR downpipe, UR test-pipe, RMR exhaust (all 3"), Hallman MBC @ 20 psi, and a mail-in reflash by DynoFlash.

I've been driving the car around for about 2 weeks now and I swear the car seems slower. The boost reads a rock solid 20 psi through the whole RPM range and is reading from the throttle body, but it just doesn't have that violent lunge like it used to. Now I know that the car is a little laggy'er due to larger piping and FMIC, but should that rob power?

Can I push more boost now that I have more room to do it? What's the max boost I should be running? I know I'm still lacking a very important Walbro 255.

 

I'd be ordering one of those tomorrow then. You spent the $ for the FMIC so why not spend a measly $100?

 

You will prob need a upgraded tune to work with your new set up