DIY Exhaust Mod – Gain of 10+ HP!!!

[Michiganstar]

3yr old thread resurrection!!

I have just completed this mod on my '03 S and I'm really pleased with the results. The facelift exhaust/combo mean that you have to go in at quite an angle but its still easy enough. I had difficulty getting started with the large drill bit so I went with a smaller one to get the hole in place then went up a few sizes and on the 2nd drill and finally went with the large drill bit and it went through first time.
Really pleased with the throatier sound at idle and also there is a noticeable woofle at around 2800rpm. This is all achieved with no drone at highway speeds. Well worthwhile mod to do IMO.

[Homeboy981]

Cat Back System is a better responding and sounding way to go!

IF you have to do it, and when I was a newer member I did, use a metal punch from Lowes for shipping cement. I found a 1" version and made the holes within a few minutes. No stuck drill bits. For a couple hundred bucks you can chunk the "boat anchor" and get a really cool sounding exhaust…instead of a faint glimmer of one!

Anyone want a boat anchor with a Crios mod?

[Michiganstar]

Originally Posted by Homeboy981

Cat Back System is a better responding and sounding way to go!

IF you have to do it, and when I was a newer member I did, use a metal punch from Lowes for shipping cement. I found a 1" version and made the holes within a few minutes. No stuck drill bits. For a couple hundred bucks you can chunk the "boat anchor" and get a really cool sounding exhaust…instead of a faint glimmer of one!

Anyone want a boat anchor with a Crios mod?

I will no doubt go for a cat back system at some point but this mod is perfect for those who want a stop gap or dont want to lose the original parts.

[mangoman]

Originally Posted by Michiganstar

3yr old thread resurrection!!

I have just completed this mod on my '03 S and I'm really pleased with the results. The facelift exhaust/combo mean that you have to go in at quite an angle but its still easy enough. I had difficulty getting started with the large drill bit so I went with a smaller one to get the hole in place then went up a few sizes and on the 2nd drill and finally went with the large drill bit and it went through first time.
Really pleased with the throatier sound at idle and also there is a noticeable woofle at around 2800rpm. This is all achieved with no drone at highway speeds. Well worthwhile mod to do IMO.

What about the MOT emissions test? Did it pass?

[sub5kvm]

Originally Posted by Michiganstar

3yr old thread resurrection!!

I have just completed this mod on my '03 S and I'm really pleased with the results. The facelift exhaust/combo mean that you have to go in at quite an angle but its still easy enough. I had difficulty getting started with the large drill bit so I went with a smaller one to get the hole in place then went up a few sizes and on the 2nd drill and finally went with the large drill bit and it went through first time.
Really pleased with the throatier sound at idle and also there is a noticeable woofle at around 2800rpm. This is all achieved with no drone at highway speeds. Well worthwhile mod to do IMO.

Hi Michiganstar
My Boxster is a Facelift S also. Im looking to make this Mod, just interested to know if you drilled just through the end pipes only or through the other pipe in the middle chamber too (as in the picture shown by the green line)?

Ive already done the "de-snorkel" mod but looking for a little more grunt, without going down the by-pass or replacement route.

Im also from Reading too btw!

Cheers