lly 100% injector tune help

razorryan10

Member
Feb 18, 2019
34
0
6
canada
hey guys I need a hand tuning my 100 over injectors

first the tuner I had tuning my truck cant sell or retune anymore do to all the new rules and epa coming down on everyone.

ok Im starting out with his base tune for my truck with 60% over in it
I have got it to idle fine now with a little haze not much, problem is off idle with load I have increased and decreased timing 10%, lowered fuel pressure and raised it I just cant get the knock out of it and no its not a crack piston or rods

it starts to knock at about 1200rpm-1700 most likely higher but that's where id let off, I kno im missing something I just cant pin point it if guys could look at tune and give me some advice as to what a good starting point would be that'd help out a lot
im playing with dsp program 1 for somewhat clean daily tune
 

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Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,750
5,920
113
Phoenix Az
take the pilot injection table (not the pilot timing table) and pull 5% out at a time. IIRC mine has 15% removed there to get it to quiet down. after that it was rail pressure tweaks at cruise.

whats done to the engine piston wise?