2003 ZR 900 Question - HCS Snowmobile Forums

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Old 02-09-2017, 07:37 PM   #1 (permalink)
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Default 2003 ZR 900 Question

I just recently picked up a 2003 ZR 900, and it comes with a set of SLP Twins on it, but it isnt quite right because it runs a tad rich on one side. The sled also comes with a BMP modded pipe and a D+D ypipe. My question is, what size jets do i need to run for the BMP and the y pipe if i change it back to the single pipe? or would it be easier just to jet it for the SLP twins? I mostly ride in northern wisconsin if that helps for where the proper jetting should be.
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Old 02-09-2017, 07:47 PM   #2 (permalink)
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They take staggered jetting so if it's richer on one side, check to be sure it doesn't have the same size in both.
Also, just to be sure, do a compression test.
The SLP twins are great pipes for the right riding style, WFO.
If you tend to ride tighter stuff, go with an SLP single. That was by far my favorite

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Old 02-09-2017, 08:37 PM   #3 (permalink)
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it does have different jets in both sides, and ive been told that they can create some real power when theyre working properly. and where i ride im mostly in open fields and on trails.
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Old 02-09-2017, 10:16 PM   #4 (permalink)
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What are you currently running for mains, pilots, needles and jets?

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Old 02-09-2017, 11:56 PM   #5 (permalink)
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They do make power, but if your carb calibration or your clutching is "off" just a little, .......the power won't be there when you nail the throttle. It will need to be on the leaner side of the safe range, and be revving just right (7900?.....check to verify that, I can't remember for sure) the BMP pipe mod and DnD Y pipe, is a very broad power, easy to clutch for, trail rider type combo.
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