For an N/A VQ with basic mods (see sig), what would the ideal A/F be in order to achieve a safe tune (no need to worry about kab0000m), maximum power gains w/o regard to gas mileage?

 

Can't say for sure but I would shoot for between 12.5-13.0. I would be more concerned with your timing tables as well... this will chunk a motor just as fast or faster if you detonate. Sorry I can't be of more help just haven't been around these cars enough to know what they like.

Don't hold your breath on people who tune these cars helping out. I asked the guys that tuned the JWT cars(VRT) what timing they were running with 14psi to require race gas(104 or something like that) and I got no response, even sent them PMs. I was just curious because I figured it must have been higher since 14psi shouldn't need that high of octane with a built 8.5:1 compression motor. I was just trying to learn myself. So good luck, let me know how the tune works and who does it for you.

 

I'll be doing it at Speedtech Racing - they've worked on VQs before and I believe the price quote was 600 for greddy e-manage+harnesses + $80/hr to dyno tune.

 

After Unichip tune, my a/f is at 14:1 at 4000 rpm and slowly tapers down to about 13.6:1 at redline. Before 4000 rpm I couldn't give you an accurate assessment, since there is some variances between dyno runs. Also, my tune is not 100% complete since we had almost 100 degree heat in the shop and the engine was completely heat soaked after just a few tuning runs. But he seemed to indicate that he was happy with the a/f, and I trust him, so take it for what it's worth.

 

you WILL make the most power right about 12.8 to 1, also advance your timing 2 degrees above stock over the whole rpms...


this will vary car to car but is pretty much the standard with the VQ

 

+1...

 

Thanks, that isn't all that bad.

 

nope, not at all. I called a few other places and they watned like $1300+$80/hr to tune a utec. :/

 

Wow... it is expensive compared to my brothers cars, but a pretty good price considering import stuff is always more money. Does anyone use the UTEC locally that you know of?

 

Not that I know of. I know of only 1 place that sells it in Calgary, but they've never tuned a 350z/g35 w/ it before.