Doubble MAF, Doubble Injector, Doubble fun?

cao43 · 01-31-2008, 01:47 AM

I am new to the ROM tuning scene, i have worked with megasquirt II, and a billion different piggy-back setups. I have not had hands on experence with OEM ECU tuning i'm still in the research and thinking phase; and i was thinking... if you doubble injector size, say from 370cc to 740cc, the K value needs to on an extremely basic level be cut in half. Then if i would add a dummy MAF like the Z32 guys i would need to again very basically doubble the K value. This would mean that running the stock K value would work for that theoretical setup. I am still wondering, is there a lower limit to what a Z32 MAF (in my case) could read, because if the area of the metered orfice (MAF) is doubbled, the velocity in the MAF that is reading would be extrememly low, would i have to then tune elsware (other then K value) to get the idle right? Would the MAF simply be inaccurate and have a bumpy idle, or would it read inaccurate to the point that it would not run?

Any thoughts, answers, or solutions are welcome, thanks.

happynole · 01-31-2008, 10:27 AM

I'm wondering why you would want 740cc injectors? Are you going supercharged nitrous turbo on a ve?

JJsr20ma · 01-31-2008, 10:35 AM

yo if ur using 740 inj u might wanna switch to a lightning MAF as the z32 might cause u problems for that high hp set-up.....also *** are u running with this setup give some more details