I just bought a set of 8.1l truck injectors to get my duty cycle down. I currently am running up to 127%. I know my LTFT's are way off, and Im running pig ritch, but figure these will give more room to expand later anyway.

So isnt it just a plug and play swap, does anyone know the rating of these (I tried to search cause I know Ive seen it before, but couldnt find it) and or anything else I need to do teh swap? What do I need to change in the tune etc? Thanks

 

https://ls1tech.com/forums/showthread.php?t=287094

this may help, i know i saw it in this thread somewhere on how to program for them. I dont think its plug and play, I think you need to specify your injector size compared to stock. Dont quote me on this but, it was something to the effect that:

stock is 31lbs p/h (8.1l) and your replacing that with 43lb p/h which is a 28% increase over stock. So the table need to reflect that increase over stock. It was something to that effect, but i cant remember exactly, so please dont take this as scripture, i may be way off.

 

Thanks for the link. I have the stock 6l injectors, Im going to the BB injectors.

 

You'll need to get the IFR table change to reflect the correct settings of the 8.1 injectors. Other than that, they swap right over.
I just did mine about 2 weeks ago, my duty cycle wasn't quite as high as yours but it brought it down a good amount.

 

As far as the mechanical side its just plug and play the tuning side looks like it has already been covered.

 

Thanks for nothing...............Post *****

 

I thought oyu were asking if they just plugged into the injector harness and all that and they didnt answer that, they answered about tuning it. So Matt, STFU a$$hole

last time I try and help you

 

what are 8.1 injectors going for ? and what are they rated at 30 or43lbs?

 

You can find em for about 100 bucks they are rated at 31#s the marine 8.1s are rated at 42 but cost about 350.

 

reason I ask is I know were 4 sets of the 8.1 injectors are,
and one set of cobra 39lbs blue injectors .