lq4 id850 ls9 cam issues
Thread Starter
Staging Lane
Joined: May 2017
Posts: 66
Likes: 0
lq4 id850 ls9 cam issues new to the forum trying to get my truck straight as it is my dd. i know bad decision but here i am. the truck runs and drives just not perfect so im constantly babysitting it. ive got a bit of help from the hptuners forum but im looking for more help. its an lq4 80mm turbo id850 injectors ls9 cam 3bar sd tune. i cant seem to get my truck to idle below 10.6 afr logging my injector pusewidth its around 2.4. if i lower my transient fuel i can get it to pulse as low as 1.0 but it starts runs for a moment and dies unless its around .0041. trying to figure out what im missing i tryed setting it to .0002 as
nd adjust my ve table but no matter what i do to it it wont stay running and with my trans at .0041 which is stock its stuck at 10.6 and smells like raw fuel. so my other question is how much it would mess it up haveing stock injection timing with the cam. im running the provided data that came with the injectors. the other issue is sometimes when i lean into the throttle it will spike to 17 to 18 afr and cut right off like the fuel was shut off which is obviously dangerous. so i will provide my tune and a log of the random spikes. any ideas are welcomed. i have tryed messing with so much stuff and im getting very irritated i cant figure it out. blue current.hpt deadly lean spots at end.hpl also i should add if i plug my stock narrow bands in it will find its way to a 14 to 15 afr idle but it also doesnt let my engine richen up for boost so i leave them unplugged.
nd adjust my ve table but no matter what i do to it it wont stay running and with my trans at .0041 which is stock its stuck at 10.6 and smells like raw fuel. so my other question is how much it would mess it up haveing stock injection timing with the cam. im running the provided data that came with the injectors. the other issue is sometimes when i lean into the throttle it will spike to 17 to 18 afr and cut right off like the fuel was shut off which is obviously dangerous. so i will provide my tune and a log of the random spikes. any ideas are welcomed. i have tryed messing with so much stuff and im getting very irritated i cant figure it out. blue current.hpt deadly lean spots at end.hpl also i should add if i plug my stock narrow bands in it will find its way to a 14 to 15 afr idle but it also doesnt let my engine richen up for boost so i leave them unplugged.
Thread Starter
Staging Lane
Joined: May 2017
Posts: 66
Likes: 0
