jegs 505 hp lq4 help

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i bought jegs 505 hp lq4 it recommended 39lb injectors so i got fast injectors cant find any data on them engine is in a 03 chevy silverado stock intake stock headers 3200 lockup stall converter 4l80e trans keeps dieing on me when i put it in gear idle is very rough too cam is pretty radical lost cam card03 silverado lq4.hpl03 silverado lq4.hpt

[edcmat-l1]

Throw the injectors in the trash and get some that have real data in GM format. Doesn't help any that you don't have cam specs.

[[email protected]]

I emailed atk engines for cam specs ill get those posted as soon as possible could you give me a reccomendation on injectors I should buy

[SiriusC1024]

https://forum.hptuners.com/showthrea...ata-Repository

[[email protected]]

ok so I did order some 42lb injectors from a 2010 camaro ss ls3 they havent come in mail yet. But I think I about got the 39lb fast injectors dialed in pretty good this is a heavy truck not expecting it to stick me to the seat afr at idle is 14.5 WOT it drops to 13.5 but heres my tune file dropped timing down to 28 in the higher rpms might lower some more probably not the best tune I know you guys can do better but I'm use to my carbureted big block 03 silverado 505hp jegs motor stock intake.hpt

[SiriusC1024]

It's hard to make any real determinations without a log to go with it. Also, your file is locked with Remote Tuning Network.

Remote Tuning Network Lock.png

I will say 28 degrees is pushing it on an LQ4.

[horsepowerguru427]

It's hard to make any real determinations without a log to go with it. Also, your file is locked with Remote Tuning Network.

Remote Tuning Network Lock.png

I will say 28 degrees is pushing it on an LQ4.

Agreed.

In that link that ciriusC1024 sent for the injector data repository, Somewhere in there blindsquirrel added a file for those 42lb injectors converted over to gen 3 data tables. I believe he sent them in a response to me asking for the data, if i recall correctly.