CrackHeadMel

iTrader: (2)

Quick background

I drive my rx7 about 70miles a day just for work, so leaning out my highvac area's is kind of a priorety to me. Depending on the road and traffic im in 4th or 5th gear between 2300 and 3500rpm respectivly pulling decent vac, low 40's to sometimes high 60's. My afr's are atleast 14.3 and no leaner than 15.2 than i have seen at these loads / rpms. I should be done with these tommorow

However, id like to keep leaning out the higher rpms high vac area's _if_ i can.

Just pulling a # out of my ***, is 4000rpm(ish) at 50-60kpa safe at afr's around 14.7? what about 40kpa? should i richen it up a bit to 14 flat? I can feel when the car breaks up to lean at a low rpm, not worried about pre-ing/det issues there, howver im not sure about high rpm? at what point do i have to start richening it out?

Also, 20kpa? 10kpa? 0kpa? what are safe afr's? right now anything about 30kpa quickly climbes to 13.5 and by 0kpa into any boost is left at 12.5 only because i know people have tuned for 1bar or more with these afr's and been safe, so i have no worries, only wasted gas. Just looking for information. I have read the thread on teamfc3s however it isnt enough help, anyone here have some input.

-Jacob

nyt

iTrader: (1)

in vac the general rule for fuel economy is lean it out until it stops running clean

CrackHeadMel

iTrader: (2)

Does that apply to 7500rpm at 3kpa? What im looking for is a rpm and or load at which point i should stop leaning the engine out till i feel it stumble. Or is what im looking for 0kpa