Ricky1981
Parking Attendant
Posts: 7
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posted May 31, 2008 04:03 AM
Exhaust Question.
Will a slip on muffler really give me a little more horsepower? Or will the power stay the same or actually lose some because of the stock tune? I want a slip on, but I don't want to lose any power.
  
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lietoome
Needs a job
Posts: 2033
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posted May 31, 2008 04:39 AM
You wont lose any power and it will look much, much better.
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Ricky1981
Parking Attendant
Posts: 7
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posted May 31, 2008 04:17 PM
Thanks for the info.
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stevewfl
Moderator
Posts: 27920
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posted May 31, 2008 05:04 PM
it'll run cooler and sound better too
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2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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Ricky1981
Parking Attendant
Posts: 7
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posted May 31, 2008 05:34 PM
cool. I learn something new everyday. Thanks
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jeff martin
Pro (closed)
jamming
Posts: 1168
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posted May 31, 2008 08:43 PM
Advantages: Run much cooler, loose some weight, Sound much better, Run a bit richer without a Power commander hence better performance "slightly" Pull the flies get a PC and its a whole new bike.
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i play with boats my wife plays with my dingy.
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H0mr
Novice Class
Posts: 61
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posted May 31, 2008 11:49 PM
Would'nt opening up the exhaust(slip ons), actually lean the bike out some instead of richening it up? Also, people way smarter then me are saying leave the flies in on the 08's.
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2008 SE, Muzzy's M14, PCIII, Adj. lowering links, Heli risers.
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lietoome
Needs a job
Posts: 2033
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posted June 01, 2008 04:40 AM
Not sure if it actually leans/richens. When I hammered the cat out of my 12, I could smell a lot of fuel at the tailpipe. I'm assuming, the cat which usually burns that extra fuel is letting it exit unspent. So in theory, I considered it running 'rich'.
FWIW, my Brock map was rich down low because of my elevation AND it had the same excessive fuel smell at the tailpipe until I got it dynotuned.
Why would opening the exhaust up make it leaner? I know this has been discussed in great depth, but I don't recall the answer.
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jeff martin
Pro (closed)
jamming
Posts: 1168
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posted June 01, 2008 07:17 AM
Correct ! With lower back pressure the bike will indeed run leaner at idle. But at high throttle the bike will be allowed more air and more fuel. With less restrictive back pressure. The main advantage in my opinion is getting ride of the hot gasses quicker. I noticed a differnce with my slip-ons before i installed my PC. But a louder bike always feels faster ya know !
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i play with boats my wife plays with my dingy.
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H0mr
Novice Class
Posts: 61
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posted June 01, 2008 08:59 AM
I guess it would depend on fuel delivery systems also. Now that I think about it, there is no oxygen sensor on the zx's pipe, right? There has to be something somewhere though. I would imagine it would try to compensate for the loss of backpressure and richen things up. I guess the band is'nt very wide or we would'nt have to buy power commanders then? We also have'nt mentioned the front end, a new free flowing air filter would help performance and I would think it would lean things out a bit there also....
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2008 SE, Muzzy's M14, PCIII, Adj. lowering links, Heli risers.
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billeason
Zone Head
Posts: 711
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posted June 01, 2008 01:04 PM
The bikes computers are not that smart''yet. The program thats in the bike from the factory won't change when you put a free flowing ex on it. If in fact the system you choose is flowing better than the stk system the bike will run lean with out some sort of fuel adder,but the 14's that i have seen here without p/c's seem to run for a while like this. bill......
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bill eason
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Ricky1981
Parking Attendant
Posts: 7
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posted June 01, 2008 03:17 PM
Thanks for all that. What does it mean to "pull the flies"?I'm still a little new to all this.
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fury
Expert Class
Posts: 427
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posted June 01, 2008 03:52 PM
Do a search and read all about it!
Get her done!
Make sure you follow the steps and warm up the bike before you do it...
Be prepared to remove a stripped screw head. (keep you head dont panic.)
Do roll the throttle when you are removing the fly's. Make it so no one can move the throttle.
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Ricky1981
Parking Attendant
Posts: 7
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posted June 04, 2008 03:51 PM
do a search where?
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FasterThanStink
Pro
Posts: 1218
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posted June 04, 2008 04:09 PM
http://www.bikeland.org/board/viewthread.php?FID=27&TID=24193&set_time=
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Speed has never killed anyone,
suddenly becoming stationary...
That's what gets you.
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