Thread: 15F, FI Injectors
04-26-2007, 09:46 PM #1
15F, FI Injectors
OK so I have RIVAS RPM kit on both of my 06 15F's. Plus other holes in boat to get more fresh air in and hot air out. That means the engine is getting MORE air. So any way I would think more fuel would make more HP. Maybe bigger Injectors would do the trick? I think of this because I own two 07 FI 700 grizzly's. You can go into the digital dash and take a factory setting of 0 and go to 120, 100 is far enough. By doing this it dumps more fuel in engine and you gain 6mph. So I think if we can get more fuel into the 1500 we can go faster!
Last edited by Tube Master; 04-27-2007 at 03:50 AM.
04-27-2007, 04:26 PM #2
04-27-2007, 04:29 PM #3
04-27-2007, 05:28 PM #4
There's several ways to deliver more fuel. An adjustable ECU can control pulse width of the injectors, raise fuel pressure, or keep the same fuel pressure and run bigger injectors. Adjusting the ECU would be most effective throughout the RPM range. There's no way to tell if the 15f needs more fuel without getting A/F ratio readings and experimenting to see if it picks up or not. My buddy is a dynotuner, I'll ask him if he might be able to hook up a wideband to the ski and see what his input is. He keeps wanting me to do some head work, cams, port the exhaust manifold/extrude hone etc. But I need to find something to tune with, otherwise the other stuff won't show it's teeth.
04-28-2007, 02:39 PM #5
I tried the Riva offshore ECU on my stock 15F (before the timing advance) and it didn`t make any difference at all.
04-28-2007, 03:38 PM #6
- Join Date
- Apr 2005
you can run a fuel pressure regulator , as used on the SC Kit
04-29-2007, 10:23 AM #7
04-29-2007, 11:05 AM #8
04-29-2007, 08:07 PM #9
I had adjustable fuel regulator on my 2 Honda f12x's.
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