Results of HW Gibson Slip Exhaust test - Kawasaki Teryx Forums: Kawasaki UTV Teryx Forum
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post #1 of 19 (permalink) Old 09-08-2008, 03:52 PM Thread Starter
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Results of HW Gibson Slip Exhaust test

I did two kinds of dyno runs to check out the Gibson slip on comparing it to the stock system with the tip removed.

First was a standard wide open throttle run

The second was a test I came up with which had a 25% load on and started out at 10mph to simulate being on the trail and gassing on it.

I also did a sound test, the results for the stock system with no tip was 93.5 db and the Gibson slip on what 96.5 db so there is a noticable difference.

As for power there is a .67 hp gain at peak on the standard wide open test but there was about a 2hp gain at around 50 mph.

On the loaded tested there was .90 hp gain at peak, the chart below does not show the difference in the peak on the loaded test. After about 25mph there was about a 2hp gain with the Gibson all the way thru.

No change in jetting was required, the air/fuel ratio varied only slightly from the set up from our jet kit and the stock pipe with no tip.

So the main question is, is the less than 1 hp to 2hp gain worth the price of $350 to you.

The secondary question is, would these numbers be that much different with cams or high compresion pistons? Most likely.

To view the dyno chart click the link below, then click on the full view in the upper left corner.






Last edited by Hunterworks; 09-08-2008 at 06:59 PM.
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post #2 of 19 (permalink) Old 09-08-2008, 06:42 PM Thread Starter
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I guess I might have been a little unfair because I was not comparing the Gibson to the stock exhaust with the tip still in. With the tip still in, the gain would be slightly over 3hp at peak.

The reason I am comparing the systems to the stock with tip out is, it is free and most people are doing that and the next step would be buy a exhaust but I would not don't buy this one for that small amount for that amount of money.



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post #3 of 19 (permalink) Old 09-08-2008, 09:05 PM
 
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Thanks for the work HW. Keep the info coming.

Didn't Gibson claim like 6-8hp?
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post #4 of 19 (permalink) Old 09-09-2008, 05:45 AM Thread Starter
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Seven I think. What is funny, no matter which exhaust you look at for a UTV they say 7 hp, I have a hard time believing no matter which UTV you put it on you get 7 hp.

Todd



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post #5 of 19 (permalink) Old 09-09-2008, 06:16 AM
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Thanks for the test results Todd. Looking forward to the rest.

Great info and unbiased, which is awesome!!

2011 Teryx Sport
2011 50" STD RZR LE
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post #6 of 19 (permalink) Old 09-09-2008, 07:56 AM
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Thanks Todd for a good and fair test Todd. I wonder how they got and claim 7hp???? 2-3hp is not worth the price for me in cost or noticable higher db's.
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post #7 of 19 (permalink) Old 09-09-2008, 08:04 AM
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Yes Todd, Thanks.....very interesting.
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post #8 of 19 (permalink) Old 09-09-2008, 12:26 PM
 
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thanks todd
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post #9 of 19 (permalink) Old 09-09-2008, 12:56 PM Thread Starter
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You guys really don't know how much I want these things to work so we can sell them.

Tomorrow I am going to do the Muzzy if everything works out.

Todd



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post #10 of 19 (permalink) Old 09-09-2008, 01:38 PM
 
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cant wait for that test!!!
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