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Old 08-27-2019, 10:58 AM   #1
ThreeSheds
 
Join Date: Aug 2019
Location: Royal Deeside, near Aberdeen, Scotland
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Another Crios convert...

2004 Boxster S

I have read every Crios post there is on this and other forums (fora?) and have not seen one negative comment, so I decided to risk it...

First I tried drilling, but the jumping bit was way too uncontrolled for me, however it did put a few scars in the pipe wall that helped with the next thing I tried which was poking it up the bum with a sharp stick... Well not exactly, it was a sharpened piece of bar that I found lying about. It's about 14mm across and square section and I made an asymmetric point to give it best chance of digging in...

Anyway - it was remarkably easy - I didn't even have to hit it that hard - and now I have a nice square bypass hole in each of the outlet pipes.

If you are thinking of doing this - go ahead! It's amazing.

The car used to sound (to my ears) very tame - like a normal saloon (until the induction howl sets in), but now it sounds (again, to my ears) absolutely fabulous. It sounds like a sports car should but is not too loud. It's the Goldilocks of exhaust notes. And it didn't cost me a penny... To get the same effect on my motorcycle I had to spend £260, an now that's a bit too loud

Crios - thank you, thank you, thank you...
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Old 09-19-2019, 08:58 AM   #2
M9G
2002 2.7 Boxster in green
 
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Hi, my exhaust tip is one single big oval, can the mod be done to this one aswell?

Cheers
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Old 09-19-2019, 11:41 AM   #3
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Yes if you look inside the tip you will see it has 2 sides.
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Old 09-19-2019, 01:15 PM   #4
M9G
2002 2.7 Boxster in green
 
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Quote:
Originally Posted by tommy583 View Post
Yes if you look inside the tip you will see it has 2 sides.
Ok yeah, so am I drilling on the two closes sides of the two pipes or the two sides furthest apart? or doesn't it matter?

Cheers
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Old 09-19-2019, 09:51 PM   #5
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Quote:
Originally Posted by M9G View Post
Ok yeah, so am I drilling on the two closes sides of the two pipes or the two sides furthest apart? or doesn't it matter?

Cheers
Go back and read pages 8, 9, 10 and 11 of this thread. All of your questions are answered in the pictures.

Here: http://986forum.com/forums/diy-project-guides/19770-diy-exhaust-mod-%96-gain-10-hp-8.html
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Old 09-20-2019, 08:17 AM   #6
M9G
2002 2.7 Boxster in green
 
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Quote:
Originally Posted by particlewave View Post
Go back and read pages 8, 9, 10 and 11 of this thread. All of your questions are answered in the pictures.

Here: http://986forum.com/forums/diy-project-guides/19770-diy-exhaust-mod-%96-gain-10-hp-8.html
I did read through it yesterday but got a little confused as so many pictures of different ways and people questioning the flow of the gases.


Cheers :-)

Last edited by M9G; 09-20-2019 at 08:44 AM.
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