Hey guys, so I just did a STM 02 Downpipe/Dump-tube, Buschur testpipe, Buschur SD catback and STM stock MAF Intake on my 03 Evo 8. Also did the gauges finally and just wanted to verify what readings I should be getting on stock tune for air/fuel ratio wise with these bolt ons. Rarely go wide open throttle and now from what I’ve been reading about on “Boost creep” etc on the dumptubes...I’ll be taking it easy. At idle when stopped at a street light etc, I range from 14.5 - 15.2 and the 1 or 2 times I have gotten on it or done WOT which was through 2 gears, it seemed to be in the 11’s range, from what I could glimpse and see. Does this seem ok for now? Again only till I get a tune in the next month or so. I know the Lower the number reads from 14 at WOT, the richer you’re apparently running. Thanks

 

Read my reply to your other thread.

 

11.5:1on 93 pump is good for WOT full boost