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Originally Posted by turbolarry
It's just my $.02;
Well there's good news and bad news... The good news is you mods allow more air in and you can make more power.  The bad news is it hot air. 
Log at night when it's a little cooler because temperature is a factor. When it goes up, everything goes up, intake temp, IC cooling medium temp., knock... it sucks.
Try adding a little at; 3K, 4K. 4.5K, 5K, 5.5K, 6K, 6.5K, and 7K. Get the O2's to be stable again at .93v across and slowly work a little leaner if you can.
Log it and post it when you can.
Since your already in the positives on the AFC, the ECU is going to give you less timing. To avoid this, and give me more room to play, I threw in 650's, but that's just me. |
Ok, I'll reset everything back to a .93v baseline and see how it goes.
Why do you say the ECU is going to give less timing due to being positive below 5k? Back when I was stock, I had +% below 5k, 0 at 5k, then -% above 5k. The result was less lean conditions before 5k, a quick dip to the timing trough at peak tq, then a quick increase in timing as the rpms increased. Now, I get a slow decrease to a much lower trough in the negatives, and then a very slow response back into the positive. I do have injectors and a fuel pump in mind for maximizing the utility of my S-AFC, but those will be my only additional mods as I try to stay stock-appearing and emissions legal.
