d_lucas60
Parking Attendant
Posts: 9
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posted August 29, 2007 11:50 AM
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Slip on's are ok, but nothing is going to beat a full exhaust. Search around on here and you will find a million topics here about full exhaust systems and slip on's. Any exhaust is better than the factory exhaust, but adding a aftermarket.....no matter what it is...... the bike should be tuned to use the full potential of that exhaust. That's means using a PC3 and a dyno session. Most gains you will see is weight. Why spend money on a exhaust that gives you marginal gains and weighs as much as the stock exhaust? Put a full exhaust on there and drop 20 something pounds off the bike and have 15+ horses over stock. My bike picked up almost 18hp over stock with a gen3,pc and 89 pump gas and it lost like 27 pounds off the bike. Pull your header off your bike and you will see how heavy that thing is. The full gen 3 exhaust i had weighed the same as just my header. I'm not nocking slip-on's but if your going to spend the money buy a full exhaust....
So here is my concern - most full-systems have poor low-end/mid-range power. So, how has this affected the low/mid-range power after the flies have been removed?
Next question - is the bike "delimited" from it's top speed once the flies are removed???
Thanks
A full exhaust will make more power up top but you wont lose any down low. Pulling the flies does not de-limit the bikes top speed. Their just little metal plates that flap open at 5-6 grand to give the engine free flowing air. You take them out the bike doesnt feel like a turd down low anymore....the limiter is in the computer
Does the powercommander get around this or is this something that is on the bike for good?
  
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bishopzx12
Zone Head
Posts: 517
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posted August 29, 2007 12:17 PM
The only wasy of getting around the speed restriction is a tre or a speedohealer for my understanding. Do youplan on doing some 1 mile racing or land speed racing. Are you chasing after the 200mph mark.
The power commander will give you optimal performance of your machine by making changes in the A/F mixture so that you will get the most hp at that particular rev that you can get for your machine at any given rpm provided you get her properly tuned.
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1996 ZX7R
1999 ZX9R
1999 ZX11
2000 ZX12R 1270
2002 GSXR 1000 "I was Drunk"
2003 ZX12R 1375
2006 ZX14
2012 ZX14R
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BlackMagic14
Needs a job
Posts: 2058
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posted August 29, 2007 12:36 PM
A TRE doen not get rid of the top speed limiter on a ZX14 only on a gixxer... and yes a full system EVEN the brocks systems will lose a very SMALL amount of power on the bottom end the flies taken out at the same time will more then make up for it, and even without taking the flies out, the weight savings will more then make up for the loss in low end power and it will FEEL like it has more power on the bottom end even though it in fact does not... bottom line if you want the HIGHEST level of performance PERIOD go with a full exhaust and a Power Commander and pull the flies, if land speed racing is what blows your skirt up the only way of getting around the speed limiter is with a speedo healer
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