Dusty05

iTrader: (3)

As the title states, I'm about to be procharged again . I liked the D1SC on my last truck and I've decided to go that route again.

Does anyone know the limits of the Flex Fuel system?

I am looking for a set of injectors that are a direct swap, possibly the ones from the House of Boost????

Opinions are welcome!!!!

Preston129

iTrader: (3)

I'm at 8lbs (on a maggie) on the non-flex pump and still have safe fuel pressure at WOT, so on the flex pump maybe 10-12 (purely guessing on my part using my setup as a reference). I'm positive someone here has found the limit of the flex pump and can answer more specifically though.

*EDIT: Should ask however, what engine size? 5.3 or 6.2?

Dusty05

iTrader: (3)

It's a 5.3...i'm looking to keep the boost around 7-8 psi for now...

Preston129

iTrader: (3)

Should have no trouble from the stock pump then.

bud8fan

iTrader: (9)

im on stock pump as well...works great at 8-9 psi.

TIM Z

iTrader: (12)

Congrats bud, that will be another fun truck! Boost is so damn addicting!!

Dusty05

iTrader: (3)

Boost is addicting! Every since I've sold my last truck I've been looking to get boosted again! I've been researching alot about the flex-fuel injectors....does anyone know what the limits are? And also what type of aftermarket injector do yall recommend?

Preston129

iTrader: (3)

Flex fuel injectors I believe are somewhere around 35-38lb/hr, so you'd still want to change them if you're going with ~8psi. I have 45lb/hr ones and wish I would have went with 52lb/hr ones.

If you're keeping the stock intake, you want the tall style USCAR injectors. Might as well get 60s and leave some room to grow.