06-15-2009, 08:11 PM #1
Riva ECU and ET 137/Riva X upgrade wheel?
Just curious if anyone else is running an upgraded impeller wheel in their X charger SC housing, with a Riva ECU and 50 lb injectors on a non-X Ski? I have yet to run mine on the water, but switched back from 55 lb injectors to the 50 lbs injectors since it seemed so rich at idle. I finally did a quick water test today, had to fix a couple minor things and hope to be on the water this weekend.
I have an AFR meter to hook up, but was wondering if anybody else had any input on a non-X ski with Riva ECU, 50s, Riva rear air, GH box and upgraded X wheel? I am hoping for 82-83 mph with this setup, it sounds great, but was wondering if anybody has measured AFR on this setup.
06-15-2009, 08:41 PM #2
I don't have any help but looking forward to your testing. I was running 50,s with riva ecu and 2 rude with RRFPR and walbro pump. I can't see why you should be in any danger with that setup. you will know right away with your LM-1.I am interested in your tunning, as I would like to drop a whell and cover with reflash ecu on T-X. STSPerformance is running 50,s reflash ecu,s RRFPR with 2Rude on T- X. Vern, the only thing I can see is if you were to run in cool weather. I know you know, but a RRFPR would make those 50,s work with no problem.
06-15-2009, 11:48 PM #3
Vern - a friend of mine has an '08 p and is running a riva ecu, springs, 50's, 15/22r and 4" air along with the et137. I just ran with him TODAY (monday actually) and in mid 70 degree temps his afr was 12.4-12.6 @ 83.4 best @ 8540-8560. It was a low humidity day and although the a/f was a tad lean by forum numbers, he has been running that way for a while. Successfully. No rrfpr.
Where oh where is freakin' summer?
(btw: I could pull him with my 140 x boat from a dig and from a 30,60 roll, but top-end was close!)
Hope this helps.
06-16-2009, 09:25 AM #4
Awesome, thanks Brendan! That does help a lot ... I will run the first tank of partly old gas out gently, then put in a full tank of fresh 93 octane and check my AFR. If I am running similar numbers, I might then swap in the 55s just to be safe ...
Summmer ... we finally had an 80 degree day yesterday, so I think we are getting there! Summer has really started slow up here, last Sunday was really the first nice day for being on the water.
06-16-2009, 09:37 AM #5
06-16-2009, 09:37 AM #6
- Join Date
- Jul 2006
06-16-2009, 09:40 AM #7
06-16-2009, 09:42 AM #8
06-16-2009, 10:09 AM #9
Yeah, yeah, I know! Its funny, but I am resisting the RRFPR ... want to keep things simple, which is why I did not go crazy with a big SC either. Thing is, if I do the RRFPR I am also tempted to just go all the way and do the Walbro too ... but for the boost I will be running it would be overkill. For some reason messing with installing a RRFPR and new fuel pump is something I don't wanna do ... but I have done far worse jobs. How tough is it to do the fuel pump? Gotta admit I would also look very hard at getting Rad4 top hat with dual lines, and then do a full return fuel rail too ...
Brendan, what nozzle is your friend running on his P? I have a slightly pitched up 15/20 and 80, 81.5 and stock nozzles to mess with ... but no 15/22 yet.
Darren, I sure hope the rest of our summer gets better weather-wise! Crappy so far ... keep us posted on your ski ... sounds verrry interesting!!
06-16-2009, 10:30 AM #10
The '08 p runs an 83mm. I'm pretty sure the 15/22 in it is lightened up a little. Not sure of how much though.
As far as the rrfpr goes, the older (pre 08's) are not hard to do. The 08's require some drilling. I haven't done a Walbro or care to go in that direction.
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By Lbaronio in forum 4-Tec PerformanceReplies: 4Last Post: 07-11-2010, 02:30 PM
By edvazquez in forum Sea Doo ClassifiedsReplies: 1Last Post: 09-19-2008, 07:13 AM
By mstennes in forum 4-Tec PerformanceReplies: 2Last Post: 07-11-2008, 11:17 PM
By Extrememotors in forum Sea Doo ClassifiedsReplies: 0Last Post: 05-04-2008, 07:19 PM
By Water4fire in forum 4-Tec PerformanceReplies: 18Last Post: 12-18-2007, 01:09 AM