injector size ?

i just ordered some 72 lb injectors ,my ? is do i need a tune waiting from my 42s or will it run till i get the tune for the 72?thanks

buuuuuump

my guess is a new tune is needed.....

i know when i was talking about upgrading mine i had to have a retune

thanks ,anymore opinions

Need a tune.

of course you need a tune... What are the details on the 72s that you bought? are they motron 60s that are rated for 72 lb/hr @ 58psi??....

all i know is the book said they were 72 lb accells and they were universal fit .idk what uni fit is supposed to mean but im praying theyre right .and i do know ill need a retune but i was wondering if they would be ok for a week or so wile i get my rails reg and lines repositioned?

Sorry dude.. Not going to happen.. Its almost double the size i dont see anyway that they will work... did you need an injector driver to go with them??...

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Originally Posted by casey23

Sorry dude.. Not going to happen.. Its almost double the size i dont see anyway that they will work... did you need an injector driver to go with them??...

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casey whats not going too work? me not waiting for the tune or the fn injectors at all ? even with my application.i have an aeromotive f/p setup if that matters.idk.SEEE YOOU SHOULD OF JUST SOLD ME YOURS AND I WOULDNT BE GOING THROUGH THIS ID KNOW THEY WOULD WORK.

it doesnt say of course that i need an inj. driver.whats up.

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Originally Posted by Quik

the truck will be extremely off to the point it wil either be rich/lean cant remember cause its comanded to have one set of injectors and it actually has another. it has nothing to do with a regulator or anything. its in the tune for the injector table

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hey quik i do understand ill need a retune ,but my ? is will they work with my retune.im getting an sd tune very shortly.but he wants me too get the bigger inj cause of my mods and i guess the 42 are or can be diff too tu ne also ,from my impression.i just would like too know if when i get the retune these will work ok? i though whenn i spoke too him that he said he could cut down duty cycle if they are [too big].thanks.

i just noticed theyre low impedence do i seend em back or still same circumstanses?

**** me wth i cant win .noone up here knows **** the only info i get is from you guys,this sucks more money .i guess im gonna see if i cansend em back.what is the highest i can go with out havin to use an inj driver?sob.

but Its not going to work without a retune.. I see people go from 28s to 32s and have idle problems.. your going up closer to double !... Thats why i kept my 60s... It was going to cost me 700.00 more doing some sorta swap !