| Re: I need more air........... |
Subject: Re: I need more air........... by Weavsvet on 2010/7/3 14:23:03 It was a good morning for a dyno run or two or three. Mid 60's with low humidity, about 40%. Picked up some air flow from the addition of either the Delphi MAF or the 58mm throttle or the weather, who knows. It got to 348g/s this time. No adjustments to the tune because I could not data log the last dyno session. Now I can though. I'm believe I'm going to have to advance this cam 2degrees if not 4. I can't be spinning this 97K bottom end to 6700 rpm. I was afraid this would happen going with the AFR's instead of LE's LE2. I really need you Gurus to advise on which I should do. 2* or 4*. Isn't the rule of thumb 500 rpm for every 2* Advance? What kind of drawbacks come with this, any? How about street manors, are they affected? I presume I'll have to get my tuner to adjust the tune accordingly. I'm going to install TPIS 1 3/4 headers next week. Will this push the rpm up even more? Here's all three pulls in SAE with the smoothing at 0. The first pull was done with the stock exhaust system. The second pull was with the cutouts 1/2 open. The third was with the cutouts wide open. It seemed to like this best.  Or if you prefer the standard correction here are some numbers for it. Personally I like this graph better.   |
