Quote:
Originally Posted by TurboNova
The XFI has a bunch of better features than the EZ setup. I do however like the EZ EFI, we were playing with it last time I was at comp/fast on the engine dyno.
bank to bank is good and I have run my race car on bank for the first 4 years. It worked fine although I did find that now running sequential it idles much better, spools faster and will 60' much faster than before. So it did pick up some bottom end power.
Little things, now in a stack injection (you are a fan of) sequential is almost necessary unless you are really running a small cam with very good vac. I have found that having the individual cylinder trims with this really helps. If you are running something like a 6 speed, big cam and stack injection then you really have to run sequential or you will find one or two stacks always popping.
I wouldn't at all say that sequential isn't about power or drivability because it is also.
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Good info Brian. Thanks! Funny... Dan Peterson and I were just discussing this very thing yesterday... ie., the 'popping'... and I know you and I were trying to find this when you were tuning Pierre's BBC at your shop.
So here's the big EZ EFI question from me (and I'm NOT getting rid of the Accel until I see how this pig runs on the engine dyno). I know the ECM asks if you're running IR... but without a cam signal it's got to run in batch? So with no common plenum - and it's firing in bank to bank (batch) how's that going to work when you have IR? Obviously it works because Inglese is selling this "system" so it must be "okay".
When you say BIG CAM -- what's big (since you're RACER BOY -- LOL)? I'm thinking we're going to run this Comp custom grind as recommended by them.
230/238 .576/.576 (1.6) on a 109.
The part number would be 12-000-8 and the grind number would be CS
3016S/3475S HR109+2
Building a "406" - Dart Pro 1 200cc heads - Honda crank journal - Mahle piston - 6" rod - Dart Little M - 4.155 bore - 3.750 stroke.
PS -- I understand Sequential firing truly making a better EFI system - but this thread is about EZ EFI -- and we know we can't run that way with the EZ EFI ECM -- so it's more about in comparison to a carburetor as far as drivability and fuel milage and "ease" of conversion that I make that "statement".