DIY Exhaust Mod – Gain of 10+ HP!!!

[bigborian]

I was thinking about this too but i would like to ask about improving the flow even more. What if you cut a piece of pipe out at the Red arrow section? Or even at the Teal arrow section and have the exhaust just escape freely from there? Would the sound be too loud for street use?




This is what i'm talking about. If you cut the yellow parts out with a power saw or if u can get the muffler off you could probably use a hacksaw. The exhaust would go in and fill 1 chamber and get right out of your exhaust tip bypassing all the chambers. You could also probably fashion a straight pipe from that entrance to the exit. I think you would also have to block off the teal side of the muffler with something maybe weld a piece of metal, or some kind of metal clamp with a cap. I guess it wouldn't hurt your exhaust system if you left it open too because it would just recirculate to the first chamber.

[2000PorscheBoxster]

if christain H is right below and i have drilled as prescribed in this thread... then i must report i have noted no appreciable sound difference!!!

unless the 2000 porsche boxster base model mufflers were designed differently, i will probably have to try the PEDRO PENNY MOD instead for serious sound improvement...

oh well.

[HDManny]

I have been thinking of doing this to my 2003 tip since I first read about it. Now I just need to decide if I should start with 1 or 2 holes per side.

[crios]

Since it's a dual pipe, you need one in each side, so two holes

[HDManny]

I though that I read an entry saying someone had drilled 2 holes per side?