|
Metal Guru
Join Date: May 2001
Location: Beverly Hills, Michigan
Posts: 2,526
|
Quote:
Originally Posted by T77911S
CIS I would stay with a K27
EFI I would go with a garret.
just my opinion because I think when the back pressure is really reduced with the garret you need much better fuel mixture adjustments than what CIS can provide.
|
While I agree that CIS could possibly not produce fuel atomization as good as EFI, back pressure won't factor into that.
Any opportunity to reduce backpressure will enhance performance, regardless of fuel injection method.
Backpressure, besides reducing mass flow through the engine, causes reversion which dilutes the mixture with exhaust gases.
Everyone who has updated to the Garrett with CIS reports improvements over the KKK turbos. In fact I myself am upgrading to one this spring.
__________________
Paul B.
'91 964 3.3 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, H&R Coilovers, ESB spring plates- 210 lb
|