Another exhaust question - Motorcycle-Journal Forums

Grump · 07-03-2005, 02:22 PM

This might be a stupid question, but unless our changing your mount on your bike, whats the purpose of getting a full exhaust system, opposed to a bolt on or a slip-on if there's a difference?

honduhx · 07-03-2005, 02:54 PM

power

jaydog19833 · 07-03-2005, 05:31 PM

Slip on is noise difference. A full exhaust is more HP.

VolklHunter.com · 07-04-2005, 12:08 AM

WHY???????????
Power commander also equal more HP; why????????????

**inspiron** · 07-04-2005, 03:58 AM

If you take off the headers, you'll see that the nice chrome parts that are connected to the manifold contain a smaller diameter pipe where the exhaust gasses pass through. This smaller pipe increases the back-pressure on the manifold and reduces your engine's performance. An after-market full exhaust (which includes headers and silencer) has a larger internal diameter, so that the exhaust gasses can leave the cylnder faster (the engine can breathe easier). This gives you more power, but can also cost you more gas and makes the bike louder.

If you replace the exhaust, you need to re-program your fuel injection system, otherwise the bike will run too lean. A PowerCommander can be used (recommended), or you can just have the FI module reprogrammed by the dealership. The PC is recommended, because you can tweek and fine-tune the mixture until it's perfect for your riding style and needs.

Grump · 07-04-2005, 09:29 AM

Thanks, do I need a computer for the power commander. And if I know someone with one can I use there's or do you have to install it on a bike. When I here people using it they always say something about a computer so I'm just wondering?

**inspiron** · 07-04-2005, 09:39 AM

http://www.powercommander.com/suppfaq.shtml

07-03-2005, 02:22 PM	#1 (permalink)
Grump In Training Joined: Jun 2005 Bike: 93 Suzuki 600 Katana & 2004 Suzuki GSX-R 600 Location: Japan, Yokota AB Posts: 104	Another exhaust question This might be a stupid question, but unless our changing your mount on your bike, whats the purpose of getting a full exhaust system, opposed to a bolt on or a slip-on if there's a difference?

07-03-2005, 05:31 PM	#3 (permalink)
jaydog19833 U.B's LoveChild Joined: Jun 2004 Bike: 04 GSXR 600 Location: Lake George, NY Posts: 1,288	Slip on is noise difference. A full exhaust is more HP. __________________ Anyone can fire a bullet. Only the good ones can steer one. Bend your elbow, move your arse, and stick the knee out.

07-04-2005, 12:08 AM	#4 (permalink)
VolklHunter.com Where Am I ? Joined: Aug 2004 Bike: 2003 sv650s Location: Nevada Posts: 35	WHY??????????? Power commander also equal more HP; why???????????? __________________ So shows the snowy dove, drooping with crows, As yonder fellows over the horizon know, So she sows, when she shows. Josiah S. Scirloc [Doc]

07-04-2005, 03:58 AM	#5 (permalink)
inspiron Muscle Biker Joined: Jul 2004 Bike: Blue Suzuki GSX 1400 (2003) Location: Canton Basel-Land, Switzerland (47.4493, 7.76536) Posts: 12,070	If you take off the headers, you'll see that the nice chrome parts that are connected to the manifold contain a smaller diameter pipe where the exhaust gasses pass through. This smaller pipe increases the back-pressure on the manifold and reduces your engine's performance. An after-market full exhaust (which includes headers and silencer) has a larger internal diameter, so that the exhaust gasses can leave the cylnder faster (the engine can breathe easier). This gives you more power, but can also cost you more gas and makes the bike louder. If you replace the exhaust, you need to re-program your fuel injection system, otherwise the bike will run too lean. A PowerCommander can be used (recommended), or you can just have the FI module reprogrammed by the dealership. The PC is recommended, because you can tweek and fine-tune the mixture until it's perfect for your riding style and needs. __________________ There is nothing worse than aggressive stupidity. - Johann Wolfgang von Goethe blog: gsx1400

07-04-2005, 09:39 AM	#7 (permalink)
inspiron Muscle Biker Joined: Jul 2004 Bike: Blue Suzuki GSX 1400 (2003) Location: Canton Basel-Land, Switzerland (47.4493, 7.76536) Posts: 12,070	http://www.powercommander.com/suppfaq.shtml __________________ There is nothing worse than aggressive stupidity. - Johann Wolfgang von Goethe blog: gsx1400

07-03-2005, 02:54 PM	#2 (permalink)
honduhx Seat Tester Joined: Jul 2004 Posts: 95	power

07-04-2005, 09:29 AM	#6 (permalink)
Grump In Training Joined: Jun 2005 Bike: 93 Suzuki 600 Katana & 2004 Suzuki GSX-R 600 Location: Japan, Yokota AB Posts: 104	Thanks, do I need a computer for the power commander. And if I know someone with one can I use there's or do you have to install it on a bike. When I here people using it they always say something about a computer so I'm just wondering?

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