hey all, im mike im new
well i have a baja 90 4 speed semi auto and i have changed and upgraded some little minor things. so anyways i have a problem
i have heard of people taking some plate thing out of their exhaust and making it louder and gettin a little more power out of it. i looked at my exhaust and it is a one piece exhaust, heres a diagram i tried drawing:

so would i take out the mesh like piece?
please help me
any help is automatically appreciated

 

good job on the drawing

Yes what most people talk about modifying on their exhaust, is punching the mesh piece out, or if you have a welder, cut the end of the muffler out and punch some holes in the baffles which will make it louder and flow more air. Then just weld the end back on

 

yea thanks
well, im 14 and i dont have any access to a welder so i was thinking about doing this: the tips is 3/4 inch in diameter. i was thinking about getting a 3/4 inch drill bit of some kind and drilling a big hole in the mesh. do u think that would be a good idea? also, i heard that people had to rejet their carburator. should i?

 

if you drill the big hole in it, you might need to rejet but I am not completely sure, the best thing to do would be to do a plug reading after you do drill it out and see if everything is good or not.

 

take out the spark arrestor