How loud is too loud? It sounds so good though.
- Thread starter 8Daytona8
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hayabusa99b/w
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looks good!!
Was going to cut my midpipes until I talked with a good friend who is a MC mechanic. Now Im not so sure. He says that when you loose all of your back pressure it does two things. One, it will screw up your HP. On the dyno, the reading wont be a smooth arch, it will be up and down like a heart monitor. Two, it will burn up your valves. Maybe not in 1k miles, maybe not in 20k miles but it will eventually burn them up. Needless to say, Im not gonna cut.
Yep running too lean will burn stuff up 4 sure! With this disc in place you have back pressure enough! It ran very good which was a surprise to me! The FI system does wonders. After running around the block and down the road with these, my MPG went down to 38 from 45! It has taken about 2 tanks now to get it back to 42 mpg! So the map changes in a hurry looks and resets itself a little at a time. Continues loop system I think they call it? Or am I wrong?(Black Bird Killer @ Jan. 01 2007,21:34)Was going to cut my midpipes until I talked with a good friend who is a MC mechanic. Now Im not so sure. He says that when you loose all of your back pressure it does two things. One, it will screw up your HP. On the dyno, the reading wont be a smooth arch, it will be up and down like a heart monitor. Two, it will burn up your valves. Maybe not in 1k miles, maybe not in 20k miles but it will eventually burn them up. Needless to say, Im not gonna cut.(dadofthree @ Dec. 24 2006,20) Did I detect some popping? Any backfire ? I've always heard about needing back pressure or you would hurt the engine, but several guys on this site have stated many, many thousands of miles without trouble. A dyno would be good to see the effects. A combustion engine is like a compressor; if you eliminate restrictions in the exhaust it should run better, however without eliminating restrictions in the intake in combination should lessen the effect. I'm no motorman, so maybe one will read this thread and straighten me out. I've also read and heard that slipons don't help much and that most of the restriction in the Busa comes from the exhaust manifold or header, so removing the cans wouldn't seem to make a big difference except in the sound levels.
Resetting your trip odmeter will give you a close to accurate MPG, faster than going through two tanks of gas.(8Daytona8 @ Jan. 02 2007,07:06)Yep running too lean will burn stuff up 4 sure! With this disc in place you have back pressure enough! It ran very good which was a surprise to me! The FI system does wonders. After running around the block and down the road with these, my MPG went down to 38 from 45! It has taken about 2 tanks now to get it back to 42 mpg! So the map changes in a hurry looks and resets itself a little at a time. Continues loop system I think they call it? Or am I wrong?(Black Bird Killer @ Jan. 01 2007,21:34)Was going to cut my midpipes until I talked with a good friend who is a MC mechanic. Now Im not so sure. He says that when you loose all of your back pressure it does two things. One, it will screw up your HP. On the dyno, the reading wont be a smooth arch, it will be up and down like a heart monitor. Two, it will burn up your valves. Maybe not in 1k miles, maybe not in 20k miles but it will eventually burn them up. Needless to say, Im not gonna cut.(dadofthree @ Dec. 24 2006,20) Did I detect some popping? Any backfire ? I've always heard about needing back pressure or you would hurt the engine, but several guys on this site have stated many, many thousands of miles without trouble. A dyno would be good to see the effects. A combustion engine is like a compressor; if you eliminate restrictions in the exhaust it should run better, however without eliminating restrictions in the intake in combination should lessen the effect. I'm no motorman, so maybe one will read this thread and straighten me out. I've also read and heard that slipons don't help much and that most of the restriction in the Busa comes from the exhaust manifold or header, so removing the cans wouldn't seem to make a big difference except in the sound levels.
I'm going to make another set and do some more testing with the Po'mans baffle system! I bet it actually had too much back pressure! My intruder which was the first time i used it needed to be almost parallel to run its best! And that was with the uncorked mod! That 1400 ate every H.D. but one and would out pull a Goldwing until 85 mph. AOL.com Images Not Available
Resetting your trip odmeter will give you a close to accurate MPG, faster than going through two tanks of gas.
Rhythm What i did was reset #2 trip and it came up to the 42 while the #1 which i leave run until it gets to the 999 and resets alone. It has come down to 42.4 The two tanks of gas was kinda a subliminal dig
cause i know there must be a BUSA BASH full of folks that wish they could get out to get 20mpg!!
Hey yawl. Just got thru with another set with less back pressure! Sounds a bunch deeper but not as sporty. Let me C if? Got to get a service other than AOL for sound i guess! Any suggestions ?
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Strait Line
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Bought the BOZ full system a couple weeks ago.Love the sound sounds better than anything around here but they are just to loud.Putting the factory system back on in a few days talk about going from one extreme to another lol.The boz is great, lost at least 20lbs and gained about 8hp & 7 ft lbs but just to loud for me.Figure the boz will make a nice helmet rack in the garage lol.
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only other thing done was bmc air filter and pc3.(8Daytona8 @ Jan. 05 2007,20:42)Hey i got a guy lookin at a set of these stubs that is looking for a set of Boz! Just a thought! I could hook ya up with him? Or not.Also what else have you done as far as fuel? any other probs other than too loud?
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