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 card.03 silverado lq4.hpt03 silverado lq4.hpl

[gtstorey]

You need to post in the GM V8 Gen3 section.

But the Fast injectors don't have the correct data for a GM PCM/ECM. You will be better off to sell them and get injectors with known good GM data.

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sorry about that trying to figure out how to delete this post now lol thanks for reply