Yeah, I was thinking 9:1 would be okay until I went and saw a engine builder mate. Saw the book figures on boost Vs Compression. WAs pretty scay how high it spikes on compression just with 10psi on 9:1 compression, BUT its doesnt take in alot of factors with motors its just genarl idea. But if you have run 9:1 and that sort of boost I cant see too many issuses, thats why I wont use the decomp plate and run it at 9:1.

Hey Rally, What is your current setup!?.. You havent been updating much. What is the most reliable setup you have achieved so far?. ( i know you have mentioned tune being the biggest issue)