Obviously I can't crank the boost with the crappy gas we have around here. What's a good turbo upgrade for lower octane gas? IX street car with GSC S1 cams and bolt-ons.

 

Cbrd bbk

 

Fp hta green

 

I've had 7 turbo combinations on 91 and the BBK full was by far the best

 

BBK B. From what I have read chad pulled 430whp on 93 @ 26 psi, so on 91 you should be able to break 400. Just my 0.02

 

I actually think this was on E85...430 on pump gas (even 93) isn't going to happen.

edit - I'm speaking of BBK full...sorry. BBK-B...I hear it's higher than 430whp wink wink.


To the OP...definitely the BBK. I just put down 361whp/324wtq on GST's (low reading) Mustang dyno on a "safe" 24psi tune. For some reason we had issues reading AFRs off of my exhaust...so I put a wideband in and going in for a real tune in the next couple of weeks.

If you do some of the basic flow mods like exhaust manifold porting and possibly intake manifold mods...you should be in the 370whp range on a good tune.