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RZR 1000 Engine All Engine and Drivetrain discussions on the all new Polaris RZR 1000.

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post #31 of 62 Old December 5th, 2013, 03:33 AM
 
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Re: 1000 exhaust

Coker did you get the dyno from trinity ? Did you use thier fuel controller
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post #32 of 62 Old December 6th, 2013, 12:06 PM
 
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Re: 1000 exhaust

Yeah I have there fuel controller too
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post #33 of 62 Old December 6th, 2013, 03:11 PM
 
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Re: 1000 exhaust

What you think about ? Does it feel more responsive ? Im going to order one. My head pipe is always glowing red I hope the ceramic coated head pipe helps that issue
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post #34 of 62 Old December 6th, 2013, 03:42 PM
 
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Re: 1000 exhaust

What you think about ? Does it feel more responsive ? Im going to order one. My head pipe is always glowing red I hope the ceramic coated head pipe helps that issue
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post #35 of 62 Old December 17th, 2013, 03:54 AM
 
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Re: 1000 exhaust

i want to see dyno results of pipe alone without fuel controller.....i bet no performance to be gained from a exh by itself...challenge?? bolt high dollar exh on stock machine and post numbers.... i say stock pipe will win....
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post #36 of 62 Old December 17th, 2013, 05:23 AM
 
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Re: 1000 exhaust

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Originally Posted by rollo331 View Post
i want to see dyno results of pipe alone without fuel controller.....i bet no performance to be gained from a exh by itself...challenge?? bolt high dollar exh on stock machine and post numbers.... i say stock pipe will win....
Why would you do this? every exhaust is going to require different fuel curves..Your right a aftermarket exhaust may make less power than stock with the stock fuel curve...put a fuel controller on it with the correct fueling and there is your "lost power". Not to mention that you could be running dangerously lean.
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post #37 of 62 Old December 19th, 2013, 02:13 AM
 
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Re: 1000 exhaust

put a fuel controller on with the stock exh and get some fuel to it and you will get same results.only you have not spent a fortune for a different sound....no exh is going to make it run lean...you are putting the exact same amount of air thru the stock intake track.....the machines are set on the lean as possible side to pass carb emmisions law! adding a fuel controller to any the new fi small engines seems to be a easy fix for small gains....i more fuel you can make go bang without drowning it= more power

edit..... one thing i have to give polaris ...they are very very good at exh design period.....they better pay that guy better!!!!

Last edited by rollo331; December 19th, 2013 at 02:24 AM.
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post #38 of 62 Old December 19th, 2013, 04:50 AM
 
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Re: 1000 exhaust

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Originally Posted by rollo331 View Post
put a fuel controller on with the stock exh and get some fuel to it and you will get same results.only you have not spent a fortune for a different sound....no exh is going to make it run lean...you are putting the exact same amount of air thru the stock intake track.....the machines are set on the lean as possible side to pass carb emmisions law! adding a fuel controller to any the new fi small engines seems to be a easy fix for small gains....i more fuel you can make go bang without drowning it= more power

edit..... one thing i have to give polaris ...they are very very good at exh design period.....they better pay that guy better!!!!
Going to have to agree to disagree here I put my Muzzy digitune on with stock exhaust before I put the Muzzy exhaust on and it ran like crap. With the Muzzy exhaust it is WAY more responsive than stock and alot more peppy in the low to mid range. I can jump out 1 car on a stock 1k and hold it for whole race. Polaris does do a very good job with the ehaust but there is always room for a little improvement over stock. Biggest thing I like is the sound, and no it is not any louder than stock, and just the overall much cleaner look. Is it worth the money???? To me yes!
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post #39 of 62 Old December 22nd, 2013, 05:51 AM
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Re: 1000 exhaust

Can anyone offer a legitimate explanation on why a fuel controller would be needed for an engine with only an exhaust mod? I have extensive car knowledge on big v8s and am aware how the air/fuel ratio changes with this mod and usually is lean. But in a big motor making 20-30 hp more vs this 2 cylinder making maybe 2-5 hp. I'm looking for hard evidence of back to back air fuel ratio changes adding exhaust only without a fuel programmer.
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post #40 of 62 Old December 22nd, 2013, 07:09 AM
 
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Re: 1000 exhaust

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Originally Posted by Litho-guy 1K View Post
Can anyone offer a legitimate explanation on why a fuel controller would be needed for an engine with only an exhaust mod? I have extensive car knowledge on big v8s and am aware how the air/fuel ratio changes with this mod and usually is lean. But in a big motor making 20-30 hp more vs this 2 cylinder making maybe 2-5 hp. I'm looking for hard evidence of back to back air fuel ratio changes adding exhaust only without a fuel programmer.
Simple..automotive closed loop systems monitor AFR and other parameters and make fuel adjustments automatically..SXS"s dont. Proof is in dyno or real world AFR logging. I run a wide band AFR and can tell you that there is a difference in AFR even with just a filter change...maybe not much but there is. All exhaust flow different and need thier own fuel curve. Some fuel added in one rpm area and maybe some taken away in others.
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post #41 of 62 Old December 22nd, 2013, 07:11 AM
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Re: 1000 exhaust

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Originally Posted by bshay20 View Post
Quote:
Originally Posted by Litho-guy 1K View Post
Can anyone offer a legitimate explanation on why a fuel controller would be needed for an engine with only an exhaust mod? I have extensive car knowledge on big v8s and am aware how the air/fuel ratio changes with this mod and usually is lean. But in a big motor making 20-30 hp more vs this 2 cylinder making maybe 2-5 hp. I'm looking for hard evidence of back to back air fuel ratio changes adding exhaust only without a fuel programmer.
Simple..automotive closed loop systems monitor AFR and other parameters and make fuel adjustments automatically..SXS"s dont. Proof is in dyno or real world AFR logging. I run a wide band AFR and can tell you that there is a difference in AFR even with just a filter change...maybe not much but there is. All exhaust flow different and need thier own fuel curve. Some fuel added in one rpm area and maybe some taken away in others.
Understand that. The xp1k I have also has an oxygen sensor. So it should have a variance built in to the factory ecu. The older bikes, I understand use map sensors only which I would call closed loop speed density in the auto world.
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post #42 of 62 Old December 22nd, 2013, 07:15 AM
 
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Re: 1000 exhaust

Quote:
Originally Posted by Litho-guy 1K View Post
Quote:
Originally Posted by bshay20 View Post
Quote:
Originally Posted by Litho-guy 1K View Post
Can anyone offer a legitimate explanation on why a fuel controller would be needed for an engine with only an exhaust mod? I have extensive car knowledge on big v8s and am aware how the air/fuel ratio changes with this mod and usually is lean. But in a big motor making 20-30 hp more vs this 2 cylinder making maybe 2-5 hp. I'm looking for hard evidence of back to back air fuel ratio changes adding exhaust only without a fuel programmer.
Simple..automotive closed loop systems monitor AFR and other parameters and make fuel adjustments automatically..SXS"s dont. Proof is in dyno or real world AFR logging. I run a wide band AFR and can tell you that there is a difference in AFR even with just a filter change...maybe not much but there is. All exhaust flow different and need thier own fuel curve. Some fuel added in one rpm area and maybe some taken away in others.
Understand that. The xp1k I have also has an oxygen sensor. So it should have a variance built in to the factory ecu. The older bikes, I understand use map sensors only which I would call closed loop speed density in the auto world.
Dont know where you got your xp1k but mine does not have a o2 sensor or does anyone else I know??

edit.. mine does now after I installed a wide band but did not from factory
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post #43 of 62 Old January 1st, 2014, 08:59 AM
 
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Re: 1000 exhaust

How do you use the auto tune PCV feature from the Innovate WB? From what I've read, you can build a table to modify the fuel based on an analog input, but not actually use the "AutoTune" feature.

Last edited by bblocher; January 1st, 2014 at 09:14 AM.
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post #44 of 62 Old January 3rd, 2014, 05:05 AM
 
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Re: 1000 exhaust

I have auto-tune now and thats the way to go IMO. Not sure on the Inovative but I had a WEGO III years ago on a hayabusa and you could import the fuel cell changes into a PC from a data log so I would bet you could with Inovative also but I have never used one.
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post #45 of 62 Old January 3rd, 2014, 05:24 AM
 
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Re: 1000 exhaust

Check out the AFR+ Gen 4 from Dobeck performance. We are running this on our XP 1000 and Maverick and they work great. GEN 4 - AFR PLUS EFI Controller - ATVs, UTVs, Motorcycles, Snowmobiles
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