Maybe true, but consider that he's running on stock internals. IMHO ~250whp is downright perfect for the internals on the qr25, so long as the tuning is right and power doesn't come on too strong below 3krpms. I'd just start to get nervous about the internals once the power levels get close to 275whp.chimmike said:below 12 is too rich imo...you'll probably start building carbon deposits on the pistons.
keep in mind if you get a 2.5" or 3" exhaust, you'll probably jump up to 260-270whp...that stromung is holding back a lot.
Well, I don't blame you...since you have obviously never tuned an EFI car. 13.0:1 is way too lean for a turbo car,....and that's a fact.chimmike said:it's been safe on engines running 9.5:1 and 10:1. just watch for pinging, but I am 99% sure you won't get any pinging at even 13.0