I ordered a new set of lt4 injectors for my 17 l86 (fbo,cam). Haven't got the lt4 hpfp yet. How can I get the truck running on the lt4 injectors? Is it just a matter of changing and rescaling all the tables under the fuel tab to match a factory lt4 equipped vehicle but leaving anything related to the high pressure side alone?
Anyone?
I used the Linginfelter injector calibration files as a template for which LT4 injector tables to copy over.
Be aware there's a HPFP pressure difference too, which affects certain tables, unless you end up carrying that over too.
https://www.lingenfelter.com/Calibra...730126927.html
copy/paste injector profile from LT4 vehicle
JTC Performance - Authorized HP Tuners Reseller
Remote performance tuning
Originally Posted by pisces_0
That's what I was confused about. Logic would tell me to copy/paste everything from an lt4 tune under "injector control" including axis that don't match. But leaving everything high pressure related (fuel system/fuel pressure tab) alone since I'm sticking with the l86 hpfp for now.
Any insight?
Ended up getting an lt4 HPFP as well. Copied everything over from a ZL1 file that logically made sense. Anyone care to look over the changes I made for the injectors/hpfp?
tylerfrost_17silveradocam_lt4fuel_nk.hpt
stockfuel.hpt
List of changes made
fuelcap1.PNG
fuelcap2.PNG
which LT4 injectors did you get? there are three part numbers....flow related (low, nominal and high flow)
19420334 is the part number I ordered. I believe they're nominal flow rating.
id be willing to paypal someone whose done LT1/L86 fuel system to LT4 a few bucks to double check my changes. Dont want anything wacky on first start up
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