Tuning 700 help! - Yamaha Rhino Forum - Rhino Forums.net
Carburetors, Tuning and Modifications For discussion of carburetors, tuning and all modifications

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post #1 of 14 (permalink) Old 05-14-2019, 12:48 PM Thread Starter
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Tuning 700 help!

Hey guys, I'm having some trouble getting my rhino tuned. It's a 09 700 I bought last year, I got a slip on exhaust and an Alba fuel controller for it along with a wideband 02 sensor and guage, it runs great with the stock exhaust and no controller but when I install the slip on it runs way lean even with the controller. I've cleaned throttle body and blew out injector with an air compressor, still the same. I recently had to rebuild top end due to smoking I went back with a 103mm 11:1 wiseco piston and rings. Still does fine with stock exhaust but I want to get it going right with my slip on, any help would be greatly appreciated
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post #2 of 14 (permalink) Old 05-14-2019, 01:13 PM Thread Starter
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It's running about 13-13.5 at idle then jumps off the guage when I give it throttle doesn't matter how much, but will come down to anywhere from 14-17 if I hold it constant for a second
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post #3 of 14 (permalink) Old 05-15-2019, 04:58 AM
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Where is the sensor installed?
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post #4 of 14 (permalink) Old 05-15-2019, 07:42 AM Thread Starter
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Right after the header pipe in the u section on the slip on, I believe it's reading right because it just feels weaker with the slip on. By the way I installed my hunterworks sheave, weights, and slugs a few weeks ago, made a big difference. Definitely a happy customer
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post #5 of 14 (permalink) Old 05-16-2019, 04:39 AM
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Not sure I know what you got going on here all exhaust we ever tested and made maps for made very little difference in fuel requirements or changed the air/fuel ratio much at all.
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post #6 of 14 (permalink) Old 05-16-2019, 08:32 AM
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Did you set the FC so it's optimized for your slip on? I run a Two Brothers set up and my FC has specific settings for the exhaust. Reach out to Alba for the settings you need if you don't already know them.

On another note, I normally put aftermarket exhaust on all my toys.....but I don't feel the minimal gain in performance is worth the significant noise increase with my Rhino's aftermarket pipe. It's simply too loud no matter the speed.
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post #7 of 14 (permalink) Old 05-16-2019, 09:28 AM Thread Starter
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Yes I've adjusted the FC as much as I could, something's causing it to run lean unrelated to the exhaust, but with the aftermarket one on I think it just makes it more noticeable. I don't have a sensor in my stock exhaust so I can't really get a reading besides how it feels driving. I just don't know where to start, maybe fuel pump screen, or fuel line going bad, injector going bad, idk I don't want to go replacing unnecessary expensive stuff
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post #8 of 14 (permalink) Old 05-16-2019, 09:36 AM
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You could measure your fuel pressure to ensure it's pumping correctly. What are the signs indicating it's running lean?
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post #9 of 14 (permalink) Old 05-16-2019, 09:48 AM Thread Starter
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Air fuel ratio guage says it is, spark plugs white, feels gutless. How do I measure the fuel pressure?
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post #10 of 14 (permalink) Old 05-16-2019, 10:14 AM
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post #11 of 14 (permalink) Old 05-16-2019, 10:53 AM Thread Starter
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Thanks I'll test it tonight
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post #12 of 14 (permalink) Old 05-16-2019, 10:54 AM
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Tuning 700 help!

If it feels gutless when was the last time u serviced ur primary and secondary sheaves? Your#s seem close to what i get on my 700 with a full muzzy exhaust and msd controller.
Is it popping when u let off the throttle?

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09 700 4seater, Nflow remanned motor with reverse upgrade, web cam, boared throttle body, duel muzzys with spark arrestors, MSDfuel controller. JBS Extreme2 sheave, SDR full radius cage, SDR doors, SDR long travel with summer brothers axles, Fox remote resi shocks with clickers on rears.

Last edited by Brian Lee Rhino450; 05-16-2019 at 11:02 AM.
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post #13 of 14 (permalink) Old 05-16-2019, 11:57 AM Thread Starter
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New hunterworks sheave, 16g weights, new wet clutch and slugs, and epi secondary spring all done within the last 50-60 miles. No popping when I let off
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post #14 of 14 (permalink) Old 05-16-2019, 12:08 PM
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Sounds good, was just a suggestion


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09 700 4seater, Nflow remanned motor with reverse upgrade, web cam, boared throttle body, duel muzzys with spark arrestors, MSDfuel controller. JBS Extreme2 sheave, SDR full radius cage, SDR doors, SDR long travel with summer brothers axles, Fox remote resi shocks with clickers on rears.
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