Hi Guys, I recently had a cam/ heads put in. I'm looking to see if the cam chop could be adjusted to sound a little more rowdy. The cam specs are 226/246 with LSA of 112. I know it's different from older ls platform. Any help is greatly appreciated. Thanks
IDLE > RPM > ADAPTIVE IDLE > Immediate and Predicated tables
Try zeroing out the 15 and -15 RPM columns and reducing the rest of the table by 5-10-15%. See if you get a bit more chop. Don't go too crazy here or the car will drive like crap and stall.
As a note, you would reduce the positive numbers and increase the negative numbers equally. You want the same values on both sides opposite of each other, just one is positive and one is negative.
Example, if you change 100 RPM from 13.92 to 12.5, you want to change -100 from -13.92 to -12.5. Keep it symmetrical.
I will give this a try this weekend. Thanks for the tip I?ve heard others with the same exact setup chop a lot more and some chop up way less so I figured there was some adjustment possible
would I continue on to 20, 25, 30% all the way to the end of the table on both sides here?Originally Posted by TriPinTaZ
My statement was that I would adjust the whole table by 5% or 10% or 15% to see if it is moving you where you want to go. Sorry if that wasn't communicated properly. You don't want to adjust each column by 5% more than the next one.
You may find once you close in on the behavior that you want, that you may need to adjust the lower RPM error area's closer to zero(not necessarily zero) but then you won't want to move the higher RPM errors like 75+ a lot or this can cause stalling or surging.
Essentially what you want is for the 0-50ish RPM range to correct LESS often but without over swinging the RPM. This is what gives you the chop.
You may find that the 15 and -15 colums should be zero. Then the 25 and -25 colums may need to be chopped in half by 50%, then the next highest columns only cut by 25% and then blend it into the higher RPM error columns. But by multiplying the entire table by %, 10,15 % and so on and testing, it will help you find where the car is stable and starts to get the chop you want.
Got it, really appreciate the info. I?ll start making some small adjustments and see how it goes
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