MFJ

iTrader: (4)

I've finally got the new motor combo tuned correctly (that was a nightmare). Ended up doing a SD tune on it. Anyway, it's safe to spray it now. So here's my question.

How big of a shot can I spray pulling off the rail? My 42lb injectors are at 75% duty cycle now on motor at WOT. LS3 rail and LS3 injectors, racetronix 255lph with the hotwire kit. I'd ideally like to spray a 200 shot but I'm thinking I might run into fueling issues.

It's just a little 346 stock block LS6.

HCI2000SS

iTrader: (2)

You might run out of pump before you max the rails

MFJ

iTrader: (4)

That's what I was thinking too. Maybe time for a stand alone system? I think I can pull enough for a 100 shot of the rail but I built the motor for a 250 shot.

NitrousExpress

iTrader: (4)

The 255 w/ hotwire should cover you for around 650-680rwhp. If you think you're going to be close to that or over that power then I would look into getting a dedicated.

-Chris

MFJ

iTrader: (4)

Yep. That's what I was figuring too. I'm going to be well over that at the rear tires. It's a shame they cost an arm and a leg. At least for a good one. Carbureted motors are so much cheaper to do.

Squirts11

iTrader: (14)

What are the limits of the rails? Why not add another in-tank pump? Another 255 would be much cheaper than a standalone, plus would raise the cap on your potential power to be made.

Would you need to run new lines and a regulator up front by simply adding an additional pump?