Any way I was expecting the AFRs to be pretty normal when not boosting and then get pretty lean when boosting.

Much to my surprise the AFRs were better throughout the entire range than with my stock ECU.

When I was not boosting I was around 15 and when I was I was in the mid to high 12s.

I am running stock injectors, stock top mount, a Walbro 255, stock FPR, an Evo BOV, no FCD, all emissions removed, ported turbo, 3" downpipe and a full 3" single exhaust.

Also I was hitting and holding 10lbs of boost like I usually do.

Honestly I don't know WTF I was thinking even trying this but it seemed to work just fine I didn't even hit the fuel cut.


OH and don't try this at home I don't want a bunch of people blowing their engines because of me.


I only tried this because I recently sold my 333 ecu to pay some bills and I just had the 326 laying aound.

Any Ideas why the AFRs were good and I didn't have a fuel cut and I didn't kill my engine?

 

there is no fuel cut in the n/a ecu. the turbo ecu provides things like cutting back on timing under boost. Better be running 93 or better gas when you are running on the n/a ecu.

 

I think the extra air coming in is canceled out by the ECU energizing the injectors as if they were the stock 460ccs.

 

oh yeah, duh why would there be a boost based fuel cut in an NA

Yeah I don't intend on running it like this, I was just curious as to what the results would be.