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Thread: air/fuel gauge installed
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06-27-2006, 09:51 PM #1
air/fuel gauge installed
I finally installed my air/fuel gauge on my RXT. I have not been in a hurry as I am waiting on my RR SC
I started it on the hose and it was reading 11.7 I reved it up to adout 3500 and no change, I think this is rich enough to add the RR impeller without the injectors, I am going to install each item and get a reading and see how far I can go before I need to add the injectors. That is if I can hold off until I get my SC those boxes with those expensive parts on the floor are starting to talk to me
I need to know what is the SAFE range, and for those that have the gauge did you use the 3rd fuse and how did you reinstall the fuse cover. I used one of the spare wires to tie the 2 hot wires together and used the single 22 GA wire single end in the fuse and was able to push the cover back on
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06-28-2006, 10:28 AM #2
Keep us updated ... I would be curious to see what A/F ratio you get right now, before the RR SC, at different speeds on the water - cruising slow, medium, and WOT. Then after the RR SC too. What mods do you already have installed?
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06-28-2006, 10:38 AM #3
shhr, i thank you in advance for the testing you are doing.
i will (or should say want) to run new rr sc imp and air intake on STOCK injectors/ecu SAFELY. i dont have a a/f gauge and therefore have no real concrete way of knowing that it will be safe. please keep me posted
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06-28-2006, 10:51 AM #4
Hey Vern,
The only thing I have done is removed OPAS and filled the ride plate holes,
I hope to get on the water in the next few days and will get stock readings at different RPM`s
I really wont to install the thru hull exhaust as I dont think it will effect the ratio I will keep you guys updated on the numbers
now just help me get my RR impeller
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06-28-2006, 10:53 AM #5
RR impellers should ship this week.
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06-28-2006, 12:07 PM #6
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06-28-2006, 07:41 PM #7
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06-28-2006, 10:52 PM #8
Well I could not stand it I had to install something so I just finised installing the thru hull exhaust what a pain in the ass
I dont see how you can install it by yourself and your arms must be 6 feet long
when I fired it up it sounded awsome well worth it, I did not notice any change in the air/fuel reading should have running numbers soon
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07-04-2006, 01:53 PM #9
Ok here are my air/fuel findings on my 05 RXT basicly stock except thru hull exhaust
1800 RPM`s = 12
5000 RPM`s = 13.3
6000-6500 = 13.5-14 (most it ever read)
7000 = 13.1
7500 = 12.8
8000 or WOT = 12.5
outside air was 90 not sure about humity the readings did vary slightly but these numbers are what I saw consistently
Does anyone know what number wiuld be considered LEAN
once I install the RR SC which should be soon i will post new numbers I just need to know what is safe first
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07-04-2006, 01:56 PM #10
I think you will go too lean with the RR impeller at WOT considering you are already at 12.5. You really want to see about 11.7 - 12.2 at WOT.
The 13 you are seeing at cruising RPM is normal and not an issue as you are not under a load.
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