Setting up a bin for modified engine.
Lot's of modified engines and swaps going around and tuning issues I thought we could put together what would you do to bin file before you even started the motor?
Motor:
Built 357 ci..500 lift on int. and .ex 218 and 228 dur. at .050 112 ls 4 deg. built in adv. stock heads? ,flattop pist.roller cam and roller rockers ,ground down tbi body.adj fpr,cop car injectors running 14 lbs fuel press.
Trans:
Maybe we cover all?
ECM:
1227747 $42-1227747-V5.xdf and $42-1227747-V5.adx
Vehicle:
Maybe we cover all?
This started in another thread but thought it would be a better separate topic. I'm sure there will be a lot and in the end will can have them in order.
Quote:
Originally Posted by
dyeager535
How about finding the closest bin to your application...454, 350, 305, 4.3, whatever, along with the the right trans? Non-PCM automatic, PCM automatic, or manual?
Quote:
Originally Posted by
EagleMark
What's the estimated HP? Have you calculated the fuel pressure needed to support this with your injectors? Calculated BPW? Have injectors serviced!
Quote:
Originally Posted by
gregs78cam
That cam is not too much bigger than mine. To get the idle inline, I would lock it in Open Loop and tweak the 6 or 9 VE and spark cells right around where it idles until you get it right. That is what I did, a Wideband is very helpful with that, but a Narrowband should work OK, just shoot for a steady-ish 0.450 V from the O2.
Quote:
Originally Posted by
EagleMark
Where is the O2 sensor now compared to when it was stock? How far a difference? Convert it to percent and adjust "Integrator Delay Vs. Airflow"
Quote:
Originally Posted by
EagleMark
Proportional Gains vs O2 Error - "PRP - Gain vs. O2 Error" and the multiplier " PRP - Gain vs. Air Flow" need to be reduced 25% to 50% depending on cam and the bin, some bins are 4 times as much as others.
Quote:
Originally Posted by
brianko
Add 2-5 degrees of idle timing, cams love timing at idle and will often smooth out a "hunting" idle. Increase idle speeds by 100-150RPM depending upon how aggressive cam is. More airflow as well, again depends upon how aggressive the cam is. Don't even both trying to tune for partial throttle/WOT without getting the idle squared away first.
Quote:
Originally Posted by
dyeager535
What about turning off EGR? Or other items not on motor?