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Originally Posted by Wicked
Neither one of you have intercoolers right?
What is your timing? A lot of tuners like more timing and fuel, and some like less timing and less fuel. Its all a balancing act. You may need to take timing out of it, not fuel.
My car is kinda like a poster child for how long a car can run with a pegging MAF and 12.5-13:1 AF at high rpms with 13 psi of boost. No pinging ever, cold or hot. I am also running the lowest timing I have ever seen on a car like mine and I believe that's the key.
Chris Johnson, president or whatever of Superchips and found of Johnson Motorsports(JMS CHips), tunes like this.
My point is, a 12:1 AFR is not lean at the boost levels you guys are running and timing makes heat too.
My .02.
BUT, because of your pump situation, you my actually be running lean. :-D
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As far as mine, I want to
take out timing, and
add fuel. Pretty sure the Street tune is @16 degrees. I think the Race tune is set @ 19.5 degrees, that is of course with race fuel.
I still think this has a lot to do with the outside temp.
