Standy exhaust ???

[evl as]

Fellas
Bit of a dumb question but beign a newbie I'm sure i'll be put straight.. I unbolted the tip of my standard exhaust today {49cc} to give it a wipe out dripping a lot of oil out {due to running 16:1 as said in the engine instructions but after bring on here i now run at 32:1} anyhow I decided to go for a ride with no tip YES its noisy but the bike went a lot better ..

Arr the stock muffler quite restrictive & is there any harm running it without the tip fitted apart from to my ears .. Over here in New Zealand we dont have the issue of noise level & the law to much...

Cheers

PS I did a search but could'nt find my answers so if this has been already discussed my bad!!!!!

 

[Greg58]

All 2-cycle engines require some back pressure to run at their best, some of the stock mufflers that are epa rated have non removable welded in fins. more power can be had by adding a performance pipe like SBP sells. You can do like a-lot of us have done, modify the end cap.

http://motorbicycling.com/members/greg58-albums-my-bike-picture1611-0610011959-1.html

 

[Pilotgeek]

Here's my take on it:

If taking the end of your pipe off is making it run better, than your carb isn't tuned right. It may need a different jetting. You will get the most power if you tune to the pipe. I tuned mine to my stock exhaust, and if I ride without the end-cap it runs very poorly. Of course, if you really want the power, get a tuned pipe instead of the little stock poo-poo pipe. Either way, a rejet is probably in order.