KymcoForum.com

General => Technical | How To => Topic started by: leo.portner on June 03, 2015, 09:17:43 PM

Title: Exhaust mod
Post by: leo.portner on June 03, 2015, 09:17:43 PM

Any one ever tried to turn the original exhaust muffler into a free flowing muffler?

Title: Re: Exhaust mod
Post by: blue on June 18, 2015, 02:42:37 PM

Best way to do that is to cut the muffer in half. Clean out all the stuff in side.sand down good.and weld back together.

Title: Re: Exhaust mod
Post by: zombie on June 18, 2015, 05:07:16 PM

You can also drill a series of 1/2" holes around the tailpipe section. It by passes the "guts", and gives it a real nice deep tone. Nothing crazy just nice.
You might have to go up 1-2 jets. A couple of new spark plugs to do a quick check will verify the jetting.

Title: Re: Exhaust mod
Post by: blue on June 20, 2015, 02:27:41 AM

X2 is that is a lot easier.

Title: Re: Exhaust mod
Post by: 0BARK4322 on June 20, 2015, 07:15:28 AM

Don't worry.....your scooter will get louder as it ages ;D ;D ;D ;D ;D ;D

Title: Re: Exhaust mod
Post by: leo.portner on July 07, 2015, 08:03:52 PM

Good idea with drilling holes but my xciting is injected will thia mess up the ecu

Title: Re: Exhaust mod
Post by: mrmike on July 10, 2015, 06:33:28 PM

Quote from: zombie on June 18, 2015, 05:07:16 PM

You can also drill a series of 1/2" holes around the tailpipe section. It by passes the "guts", and gives it a real nice deep tone. Nothing crazy just nice.
You might have to go up 1-2 jets. A couple of new spark plugs to do a quick check will verify the jetting.

I believe the GTI300's are injected. Will they automatically compensate a little richer if necessary?