DIY Exhaust Mod – Gain of 10+ HP!!!

[23109VC]

Originally Posted by clb0099

I have opted to do the pedro mod on my exhaust..... i like the sound it gives the car.. since i am spent so much money on mods of my car I figure while it is dismantled to just get it done they way i like it so i am happy with it.

I did the Pedro exhaust to my car - by buying a muffler that already had it done.

I had a pretty bad exhaust leak that was just fixed today - so in the next day or two I'll shoot some video of my car and post it to see what you all think. just before putting the pedro muffler on - I did the crios mod by drilling two 1/2" holes. I think the pedro muffler is a bit louder and it has a different sound. both were good. I would have to hear them side by side to say which I like better...

I think I might like the $2000 fabspeed system more... but my wife won't let me spend that much!!

seriously - I think both mods are good - i'll post my clips later and you can all be the judge.

one thing I notice is that at higher rpms/speeds - I think I hear the intake more than the exhaust. i'll bet an evo intake would sound awesome.

[tamarsha]

I was just about to do the Pedro mod but my exhaust man and I started to get nervous about how close the pipe would have to be to the bumper. I had just deiced to save my coins for an aftermarket exhaust when I saw this mod.

Has anyone ever tried to bypass the secondary cats with… oh… say a piece of rebar or some ridged conduit? I have heard people talk beating the hell out of cats to break them up and create more flow. I wonder how hard it would be to ream out the secondary cat.

[spyder803]

Any difference in doing this mod to a S model? I'm contemplating doing this but haven't seen if anyone is doing this to an S.

[NWI Bill]

crios, the links aren't working.

Also has anyone tried this on the Boxster exhaust with the non-removable tip? I have a '98 Boxster and would like to try this mod but I don't know if I can get the right angle because the exhaust tip is welded on.

[crios]

Originally Posted by NWI Bill

crios, the links aren't working.

Also has anyone tried this on the Boxster exhaust with the non-removable tip? I have a '98 Boxster and would like to try this mod but I don't know if I can get the right angle because the exhaust tip is welded on.

All links have been update and should be working now.

As for doing on a 98....try a long drill bit and go straight back into the bend?

[tamarsha]

I did the 4-hole mod on my '03 S. Worked out great. If you have an '03 or '04 with the removable tips, there is no reason why you should do this mod now! It is free, it sounds good, it is free, it is easy, did I mention that it is free.

It didn't make a huge difference in sound, but it does sound better. It is a little louder and has a more grumble to it. It is not at all over powering, resonating, or annoying.

[MidMotor2TrunkToter]

Crios.........U R DA MAN!!!!! Just did the Mod on my 2000 S and I love the sound.


For all of you that have the welded on tips, don't let it stop you.

I just got the longest 1/2" bit Sears had it stock and bored straightback through the pipe. I put the second hole about 1 1/2" from the first one. The placing is not too critical but you should allow enough room between the two holes to prevent compromising the structural rigidity of the pipe. If anyone is considering this Mod, I would definately go for it. It does help to put penetrating oil on the drill dit. This helps the bit cut through the metal smoother. Also, don't forget to put some duct tape around the outside edge of your tips to prevent them being scratched by the side of the drill bit. Good luck and............. Drill Baby Drill!!!!!!!!!!

[2000PorscheBoxster]

PICTURES

what's going on here? where's the noise?

[2000PorscheBoxster]

nobody can chime in on this one?

[Christian H]

Although the holes that you have drilled are slightly smaller than the two that I drilled they are in a similar position to my own,you should be hearing some increase in noise by now!

[crios]

Originally Posted by spyder803

Any difference in doing this mod to a S model? I'm contemplating doing this but haven't seen if anyone is doing this to an S.

Just as easy, Voxster from the PPBB site did it to his 03 S, sound clip and pics below.

He actually did two holes in each tube, so 4 all together.

Sound clip:
http://www.tripdevice.com/bryan_temp/ppbb/cse_exhaust_hack/cse_exhaust_hack_long_4holes.mp3