I'm am about to do a b20 turbo setup, but I'm not sure which one to get the B or the Z, I know the B has 8.8:1 comp and the Z has 9.6:1. I figured the B would be better because I could run crazy amounts of boost. My plan was 8 PSI daily, 12 PSI when racing. But the Z sounds like it could handle 12 PSI every once in a while and would produce more power than the B at 12 PSI. So, I'm not to sure which one to get. I'd like to see other peoples opinions, so any incite would be great. Thanks.

 

I have a JDM B20B and it has a 9.6:1 compression, basically same **** as the USDM b20Z. I have it at 10 PSI, very strong.

 

have any dyno numbers, or track times?