well after searching the forum, seems like my injector overlap could be off. i am getting lean when the 1600's come on. my injector overlap is 7-7-4. now i searched a good amount of this topic and noticed people use all kinds of setting. i am thinking of running 9-7-4, because i only get the lean spot in boost. now my question is can you put any numbers you want in there? say 9-9-9 or 7-2-1? i have only seen a few sequences in the numbers. most common 7-7-4, 9-7-5, 3-2-1. also here is the link to my dyno sheets.

https://www.rx7club.com/single-turbo-rx-7s-23/dynoed-have-some-questions-564397/

 

small primaries, big secondaries...standard issue no matter what computer you use.

a bit more fuel pressure, bigger fuel pump, one pump per rail, etc... lots of ways around it.

 

Transistion from PRI to PRI + SECND injectors takes place long before your reported lean area. If you use the DL and record AUX and ADVANCE without BASIC (too much data slows down logging speed), and use the CHART function, you can look at what the injectors are doing. I think you need my tuning notes (PFC forum).

 

i have tried riching in that area. it helped but i still have the hump to 12 afr there. i thought it might have something to do with the transistion. would raising the pressure like guitarjunkie said help some? i have base pressure at 42 psi right now. maybe something like 45 or so.