Quote:
Originally Posted by Raptor Jesus
I am correct. You said you MUST lower compression to run boost which is a truly ignorant statement. Hundreds upon hundreds run boost on bone stock engines with ZERO issues. You're using the old way of thinking that lower compression is a must for FI and that's not true and hasn't been for many many years. I remember 15-20 years ago we would build engines with 2 points lower compression because the tuning options were junk and we needed that margin for error. The engines ran like crap, no bottom end, and you had to run crazy boost levels to compensate. Then people learned to tune for the engines (well some did just not the OP's tuner) and people realized compression and boost is a good thing. The people who instantly say you MUST lower compression are stuck in the past.
If the ring gap is the limiting factor, fix it. But keep the compression.
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Food for thought..
My car: zl1 Lt4 1.7L blower, ATI 9.2 balancer, CAI, and headers. Dynoed 659 rwhp
Wifes car: SS LT1, 2300 blower, Aux DSX, LT4 injectors, headers and CAI..
We had our cars worked on at the same time in feb.. dynoed with in 2 hours of each other both manual 6, both same fuel system, same dyno, she has a better blower. (Moves more air and iats where better since I was over spinning mine)
Lower compression wins when you can turn up the boost agreed..
Higher compression wins if you have a fuel system and octane.
But in the LT Direct injection running on 93 lower seems better..the blowers can out perform the fuel sytem.
Look at the Street Brawler by Jannety. 735 on a SS with cam and maggi2300, on zl1s it's in the 800s.