Punky

iTrader: (4)

So I dynoed my Sc400 a couple months back, and now I have decided I want to make a bit more power. So I have been looking into an apexi SAFC. The AFR on my dyno sheet at 3500 is around 15, as I pass 4k RPMs it gets under 12 is this good? I am unclear on what the optimum AFR number is. Lastly I am going to be doing a single din head unit soon and was wondering can I put the SAFC under the headunit on the dash kit to fill up the space?

Thanks.

ihiryu

iTrader: (7)

if you are all motor, you want 13's under WOT, 15's are ok if you are just crusin

stevechumo

iTrader: (5)

At startup, my AFR is 15.5-16.5. Cruising (no boost) at 70 mph and 2500 rpm, it's around 14.7-15. Under WOT, it's around 11-12. Sometimes it's 10.5. But I enriched the fuel for my turbo so that's the only difference between NA and NA-T under WOT. For your car, I think that's normal. Your AFR at 3500 rpm at 15 is a little bit lean, and passing 4000 rmp at 12 is ok. The SAFC isn't really needed if you don't run a forced induction system. You may get knocking if you lean out too much.