Exhaust bridge??? - TwoWheelForum: Motorcycle and Sportbike forums
 
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post #1 of 6 (permalink) Old 11-22-2007, 11:52 PM Thread Starter
 
Join Date: Jan 2007
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Exhaust bridge???

I don't want to sound dumb, but I got to ask this. Since I just bought this thing (07 zx6) I don't have much feedback from it. I've ridden my 07 GSXR for a year and I know a lot more about gixxers then kawis. Anyway, I've heard that there is a "exhaust bridge" mod that, supposedly, dealer can do for you to iprove HP up to +8 (yeah, right). Anybody else heard about this? I know guys that removed exhaust servo motor on their gixxers, giving them more ooomph without loosing back pressure.
The purpose of it is to close a little flap on exhaust at low RPM to maintain backpressure and open it up at high RPM to obtain more HP. I am not a big mod guy but I am also not a big spender - no point to spend big $$$$ on exhaust and PCIII's if you can add a little juice to your bike by removing some stock chit.
Anyway, anyone out there with 07's or some knowledge - I appreciate any imput.
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post #2 of 6 (permalink) Old 11-23-2007, 12:01 AM
 
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that's why i ride a 750.. 600's have no mid-range
not much you can do without spending $$ to improve power on a 600.

-a|ex
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post #3 of 6 (permalink) Old 11-23-2007, 12:18 AM Thread Starter
 
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Quote:
Originally Posted by Back _Marker View Post
that's why i ride a 750.. 600's have no mid-range
not much you can do without spending $$ to improve power on a 600.

-a|ex
I beg to differ. I have an 07 gixxer 600 and TRE worked the magic. It was not zippy off the line, but after installing a $30 TRE it got a boost. And that is coming from an R1 rider and few other guys that ride hard. Good thing gixxer has a loophole like that.
Got to give you kudos though - 750 to me is an ideal bike. If it wasn't for my brother, I'd get a 750 instead of 600 since I will be giving him the bike later.
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post #4 of 6 (permalink) Old 11-23-2007, 12:25 AM
 
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TRE is worthless unless it's a liter bike. i yanked out my TRE on the 750. they only work at low rpm's. 600's don't live in the low rpm range.

don't worry about the exhaust bridge. advancing timing will do more than changing pipe length.

-a|ex
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post #5 of 6 (permalink) Old 11-23-2007, 04:49 AM
 
Join Date: Nov 2007
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i'll tell you what. i put an Ivans Smart TRE on my gixxer 1000 and i saw a huge difference. i happened to be riding on a cold tire that morning and never caught traction for about half a mile. i would recomend this probuct to anybody, but like it was stated above, maybe it's only a liter bike thing.
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post #6 of 6 (permalink) Old 11-23-2007, 09:35 AM
 
Join Date: May 2006
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It is called the "wire jump mod" and first came about on the '05/'06's. Those were the first years of the exhaust valve and Kawasaki had to put in a loop that closed the valve slightly at HI rpm's to get around US noise emissions regs.

First off the mod will only give you about 3 HP and that is over about 14000 rpm. The rest of the time the valve functions normally and there is no difference in performance. Little difference/NO $$.

I am sure you can google "wire jump mod" and find the links to Kawiforums and Ninjaboards, or ZX10R.net and see the details complete with dyno charts ect.

My recommendation is go to the dealer, buy the competition ECU and reap the gains of optimized factory fuel and ignition advance settings through out the rpm range. You won't require the PC Interface Cord and CD ROM, just plug and play. BIG difference/low $$

Or you can get a slip on or full system that does away with the valve and get a Power Comander tuned to match it. BIG difference/ BIG $$

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