Thread: Fuel injector question
12-03-2012, 01:46 PM #1
Fuel injector question
I was wondering with my current set up what max rpms could I get, without getting lean?
I was able to run 8600 rpms this summer with no problems, but I wanted to bump my rev-limiter to get a little more for closed course racing,
Right now with the current rules I have to use any stock injector that seadoo puts on an X ski,
My current set up is the folloiwng:
06 RXP- ET-137 charger-rrfpr-innovate AFR gauge-bosh real green 42's --EX-IC- new Walbro fuel pump--rotax racing exu for 8650, 08-water box and mid pipe set up, supertech valve train upgrade
12-03-2012, 06:08 PM #2
they put 48s in the iControl skis but dont think they are backwards compatible?
Cant just bump the fuel pressure a bit more?
12-03-2012, 06:15 PM #3
12-03-2012, 07:09 PM #4
Connector adaptors are available
but you can buy Bosch 48 with ev1 plugs
Never heard of e, do you mean uscar/ev6?
12-03-2012, 07:11 PM #5
Fuel injector question
Prob meant to say electrical connectors are different.
12-03-2012, 07:24 PM #6
seadoo02xp sent me this today,
With an ET-137 and 48# injectors you should be just fine, you may need to adjust fuel pressure a tad but as long as the rising rate reference line is connected you shouldn't have any issues at that rpm, stock 48 injectors will fuel a Riva xxx o around 8800 rpm with no issues, it does fall off a little past that but that is a larger charger than you have and that was approaching 16 psi boost. as long as your valve-train is set up for it I wouldn't be afraid to set the limiter at 8800-9000 with that setup,
And with 42's you should be good, as long you watch afr's you will be OK, you should have enough room to compensate with a RRFPR.
12-03-2012, 10:23 PM #7
48,s would be best if you could run them.
12-04-2012, 06:02 AM #8
I have heard of 8800 being run in stock class on the 42s but thats with less boost then you, also on stock fuel pressure tho.
01-10-2013, 07:44 AM #9
01-10-2013, 08:35 AM #10
From what I have seen on data logs coming off a totally stock 2012 bike, these motors a flat out of injector duty cycle. A rising rate FPR may get you a little more dynamic range but I have not tested it.
This would require at least a CMD to retune the bike if you go this direction.
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