| Re: AFR's, Did I gain anything...... |
Subject: Re: AFR's, Did I gain anything...... by BeachBum on 2010/6/20 18:50:52 Quote:
It can.... it depends on the set-up, but typically as you increase your engines breathing ability, you will be shifting your torque curve higher in the rpm range.... hence, your peak tq may only be marginally improved, but your overall HP curve is much more powerful. This is of course due to the larger cylinder heads, more cam, etc... Having said that, now that I have reviewed your torque curve, I notice that dip you talk about previously is right in the area that you should have your "real" torque peak....(It shouldn't be at 5500 rpm with your cam, but it is because where its supposed to be is missing, leaving 5500 rpm as the next high point)..... I think that dip has chopped off the hill of torque that should be their. I would guess, it would keep rising instead of stopping and going down where it does..... In my opinion, with the set-up you have, your Torque peak should be in that 4600-5000 rpm area..... and with that dip happening at that precise rpm.... notice that it goes flat at 4300 rpm and then actually goes down at 4600 rpm..... invert that dip into a hill, and that is probably more along the lines of what your torque curve should look like.....you're missing a bunch of torque and that may even improve the curve above it when you get it fixed.... You need to get it back on the dyno and tune out that dip.....and I think you'll find at least 20 more ftlbs of torque at that rpm.... probably more. Kind of looks like you need more fuel, but I think its more than that... I'll bet you're getting some detonation or perhaps the ecm is pulling a bunch of timing out in that area, but not sure, just guessing. good luck ! |
