Nelson Taylor
Zone Head
Posts: 927
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posted November 16, 2006 12:29 PM
U4 or MR9 with stock exhaust
Has anyone tried either of these fuels with stock exhaust and no mapping?
What should I expect?
Are there any maps out there for this setup?
BTW, I'm not ready to go with a pipe yet.
Thanks
Nelson
   
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D
Needs a job
Posts: 3365
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posted November 16, 2006 12:50 PM
You should expect to waste alot of unnecessary $ on fuel.
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zxboy
Expert Class
Posts: 292
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posted November 16, 2006 02:01 PM
I think either one of those fuels might smoke your "Cats" in the stock exhaust.....
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ninjaboy311
Zone Head
Posts: 940
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posted November 16, 2006 02:08 PM
I can say it works damn good with my sidewinder and pcIII, but expensive. I don't suggest it with stock exhaust though.
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Naarden Speedlinks Sponsored Rider
Schnitz Racing Sponsored Rider
8.74 @ 152 on stock motor and MR9 (Muzzy Powered), 205 lbs suited
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jarhead
Expert Class
Posts: 418
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posted November 16, 2006 02:29 PM
They both make HP but are hard on everything from fuel pump to valvetrain. If you just need that little bit they might be a consideration otherwise I would stay away. Leave that stuff to the Prostar guys.
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Nelson Taylor
Zone Head
Posts: 927
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posted November 16, 2006 03:13 PM
Gotcha!!!
Appreciate the responses.
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Bently
Needs a life
2012 14r In Blue and no Mods!
Posts: 5428
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posted November 16, 2006 03:42 PM
If you use mr9 you must drain the tank and not leave any in there. it is very hard on things.
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zxbob
Pro
Posts: 1692
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posted November 16, 2006 06:02 PM
quote:
If you use mr9 you must drain the tank and not leave any in there. it is very hard on things.
........ and the U4 is leaded - "it will clog the cats"
Bob
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Good parts aint cheap and cheap parts aint good !
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted November 16, 2006 06:13 PM
 Edited By: CrotchRocket on 16 Nov 2006 18:13
Yeah what Bob said and so is mr9...
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Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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smokinZX14
Needs a life
Posts: 10197
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posted November 16, 2006 09:30 PM
I tried some U4 in my zx14 and saw no gains but that might be do to not being mapped for it... Or it doesn't like the higher octane of the u4....Seems to run better on plain old 89 pump junk.... I'm going to try some 87 and see what happens ...MR9 i beleive is 87 so it should work better for the zx14 ....But like everyone has stated you really should not leave it the bike for very long ..... 75.00 bucks for 5 gallons of u4 or 115.00 for 5 gallons of mr9 is going to get costly real quick !!! A 20 dry shot of N20 would be better and cheaper in the long run ....Smokin...
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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zxbob
Pro
Posts: 1692
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posted November 17, 2006 04:17 AM
quote:
I t Or it doesn't like the higher octane of the u4....Seems to run better on plain old 89 pump junk.... I'm going to try some 87 and see what happens ...MR9 i beleive is 87 so it should work better for the zx14 ... A 20 dry shot of N20 would be better and cheaper in the long run ....Smokin...
Higher octain = lower HP in a stock bike ...... save your money !
Now, an NX dry shot system = 
You decied 
Bob
____________
Good parts aint cheap and cheap parts aint good !
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