wheeliekev
Expert Class
Posts: 209
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posted November 22, 2005 01:08 AM
02 ZX12R, cat
If I remove the catalytic convertor out of the exhaust mid section and fit a race can will I need to fit a power commander ?
My thinking is to keep the standard downpipes as I want to keep the bike as torquey as possible for wheelies, if I fit bigger bore downpipes will this make the power more top end rather than midrange ?
  
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MadMike
Moderator
FEAR THE BLACK FLAG!!!!!!!!
Posts: 6579
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posted November 22, 2005 08:13 AM
I know guys that run without it, but you can tune it to get the most out of it with a PC...
____________
200-MPH CLUB MEMBER!
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trenace
Needs a job
Posts: 3056
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posted November 22, 2005 02:53 PM
In general and in this instance also, bigger diameter headers do, as you say, move power up top at cost of lower down (up to some maximum past which they just worsen it everywhere but the stock headers aren't up there yet.)
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supra5677
Pro
Posts: 1279
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posted November 22, 2005 03:59 PM
a full akrapovic system makes a crap load of torque well above stock.. Particularly from 4500 on up. Also an adjustable 4 degree ignition advancer adds throttle response and torque.
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted November 22, 2005 05:20 PM
I have an Akrapovic pipe on my ' 02 12 never used a power commander, no problems...Well except for possibly my fuel pump going bad due to using MR9 race fuel...
Dont need a PC with a stock motor 12 !!!
____________
Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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wheeliekev
Expert Class
Posts: 209
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posted November 23, 2005 06:56 AM
thanks for the replies, I've decided to remove the cat, fit an end can and fit the power commander and have it set up on the dyno, curious now, unfortunately the dyno guy I want to use is 300 miles away, mind you thats fook all compared to the distances you guys can travel over there lol, I'll let you know the power figures.
Cheers.
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supra5677
Pro
Posts: 1279
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posted November 23, 2005 08:59 AM
removing the cat will defenetely give you horsepower.. Im guessing a 8 horsepower increase over stock..good luck
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wheeliekev
Expert Class
Posts: 209
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posted November 23, 2005 10:24 AM
8hp just for the cat !, a race can and power commander how much more will that give ?
are they 163 bhp at the wheel as standard
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wheeliekev
Expert Class
Posts: 209
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posted February 23, 2006 07:44 AM
just got the bike back from the dyno shop, mods are power commander, blueflame single port race can, k&n's and the cat removed, it ran ok with a map i downloaded but its loads better now, it was making 171.5 at the wheel when it went in and its now making 179.5 with 101 ft lbs of torque, feels really smooth now.
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