DatSRBoi wrote:Akfahad wrote:Dat...what was the overall A/F ratio you had them tune to?
To be honest bro I really dont know how to read the A/F chart. Only thing I remember hearing the guy said to his other workers there was that its 13 something? No idea. But the guy tuning my car said Ive maxed out my Injector and that he couldnt fix it until I get bigger injectors. When it comes to A/F and reading and understanding it..... I have NOOO idea
Someone teach me.
gman wrote:Keep it up, oh and 13s for a/f ratio is too high. You should be running in the low 12s at the top of your rpms. Low 13s are ok for low boost low rpms but as boost rises you should get into the 12s and stay there even high 11s at the top.
^^^Dat...what G wrote is absolutely right, I'm tuned to 12.5:1 right now, which after re-reading some posts, I'm going to bring it down to 12:1 just to play it a little safer. But let me take a stab at trying to explain A/F ratio. Our stock compression ratio is 10:1 (correct me if I'm wrong), but when you increase the compression ratio to like 12 or 13:1 (which is a lot), your increasing the amount of pressure in the cylinder and since everyone knows that our engine components aren't all that strong, you'll be replacing engine parts. The trick is to find the right A/F ratio when tuning that gives you the biggest gains, but at the same time is relatively safe. Hope that clears it up a little but I can't explain the ratio itself (12 something of air to 1 fuel...not exactly sure).
Josh
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Akfahad - SolaraGuy Semi-Pro Racer
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