600rr
Novice Class
Posts: 55
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posted June 05, 2004 09:16 AM
Question about the exhaust mod
Ok so im sick and tired of wating for my muzzy pipe.....been 2 mounths......anyway i took an air hammer to the cat....but i also have a power commander (running the stock bike map)....i have been getting some wicked back fires and pops.....My question is: Am i hurting the bike in anyway from the backfires....it seems to only do it on decel.....not many pops.....just a bike BOOM..and not everytime.....Thanks for the answers in advance....(i know there are some bike gods on here. so i hope 1 of them will respond with a real answer and not flame me for being ignorant).....
   
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bovinespongiformencephalo
Pro
variant Kreutzfeldt-Jakob
Posts: 1060
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posted June 05, 2004 09:29 AM
I dunno what's up with mine. Did the cat mod, drilled three 1" holes in the baffle and it STOPPED popping on decel. No other mods. Makes a nice raspy noise now too. I only put a 2" hole through the center of the cat, could that explain something? It's ok to flame ME for being ignorant. I forgive myself.
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TLR2000
Novice Class
Posts: 37
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posted June 05, 2004 01:38 PM
I'd be looking for a leak around the mid pipe connections, Decel backfire is usually caused by fresh air being sucked in around a mating surface, Just knocking out the cat. will not cause these symptoms.
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marc zx-10
Parking Attendant
Posts: 19
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posted June 05, 2004 02:11 PM
i get the same pop from my bike. but i have a micron slip-on on my bike.
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bovinespongiformencephalo
Pro
variant Kreutzfeldt-Jakob
Posts: 1060
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posted June 05, 2004 06:10 PM
That's because Microns suck
air in around the junctions.
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dket
Expert Class
Posts: 189
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posted June 06, 2004 04:19 AM
The pop comes from a lean condition and a closed throttle . Get a PC3 and a map made for YOUR bike .
Why aren't the exhaust experts chiming in on this ?
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worm~hole
Needs a life
Miles to go before I sleep....
Posts: 10623
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posted June 06, 2004 04:34 AM
 Edited By: worm~hole on 6 Jun 2004 05:34
...they have no time to read stuff like this...besides, lots of other experts here who can answer simple stuff like that...the exhaust experts are probably they're busy working 24/7 as you requested so that they can get pipes out...
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“We sleep safe in our beds because rough men
stand ready in the night to visit violence on those
who would do us harm.”
-George Orwell
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CanyonCarver
Expert Class
Posts: 121
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posted June 06, 2004 06:46 AM
Edited By: CanyonCarver on 6 Jun 2004 07:55
The popping on decel is caused by the KLEEN system exhaust air injection. If you block them off with vacuum caps or block-off plates (cleaner) the problem will go away (or at least subside considerably).
Pic:
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12RPilot
Pro
Posts: 1094
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posted June 06, 2004 07:23 AM
My ZX-12 had a custom map made on a dyno and it popped when I shut the throttle from high revs. Never worried about it myself. I just wished it would have shot out some cool flames!!! That would rule!!!
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If you aren't an AMA member, you're part of the problem.
NESBA #209
http://www.bikepics.com/members/12rpilot/04zx10r/
 
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