71 C10 with 5.3 and L99 out of the same truck 2006 with NO flex fuel or DOD
TH350 behind it
BTR low lift truck cam 224/230 112 +3 .500
4" intake tube with aftermarket intake
Catless 2.5" with Shorty headers
I am helping out a friend with getting the LS swap running. He is a mechanic with around 30 years experience and does a lot of work on classics but just got HP Tuners a few months ago for this swap. Long story short I went to help him the other day due to idle issues and decel issues he was having. After doing some reading on here I figured we should start fresh with the basics. I haven't worked on a lot of 3rd gen ECMs or on any swaps with non electronic trans. The main issues were that on decel the motor is pulling timing and practically shutting off and on decel we were getting P0101. So since we are starting over I was hoping we could get some guidance on what needs to be disabled/zeroed out/changed and what parts of the tune will we need to be making the adjustments due to the ECM not knowing when the truck is in gear.
So first adjustments to the tune should be?
-Turn off all Trans ECTs? (I read some forums that said this was the easiest way to run the ECM without the trans signals)
-Change trans type to non electric auto?
-Zero out Idle over and under adaptives under the spark tab? (read a forum where they said to turn off Idle adaptives to eliminate the decel timing being pulled due to the ECM not knowing it is in drive. I think this might be where our decel issue was)
-Add 10% Idle Air?
-Add 2 or 3 degrees of Idle timing in In Park (I assume In Drive wont be used due to ECM not knowing it will be in drive)?
-Add 20% across the board on Eng Diagnostics > Maximum Delta Airflow-p0101 Error (I read that this will eliminate the P0101 code issue and the code is probably due to the large intake tube. Still dont 100% understand what this does)
Other Change that I know I should do
-Disable COT
-Disable EGR
-Disable DFCO for part Throttle tuning later
-Zero out PE Delays
-PE Ramp in to 1.0
-Go through Torque Management
Thanks in advance and feel free to dumb things down for me as I am not the most experienced either. I have attached the Base tune before we have made any changes for reference and I will post the first tune for more scrutiny after my above list is looked over. After we get the base settings right then I will start posting logs.
lee's 71 c10 - original.hpt