pse mod understanding

[T Pot]

ok, im totally new to the Porsche so can anyone let me know, if my interpretation of this mod is right ?

on my 2000 2.7, i basically drill holes in both exhausts as close to the rear box as i can, and weld in some inch and half tube, and route that best i can around the box, and then enter back into the single outlet exhaust tip?


if this is the case, i have an idea that i want to run by you too

if in this tube, i was to add either side a 12v operated valve, controlled by a dash mounted switch, i could then, turn the sports exhaust off and have a standard sounding car, with the option of a loud button?

or am i totally up the wrong tree here?

 

[Mark_Bennett]

Soinds similar in principle to the Porsche Sports Exhaust on the 986.

I'm don't know about the drill points though.

 

[Black80XSA]

Checking out the modified ones on eBay will give you a good idea of the connection points.

 

[jeegnesh]

Hayward & Scott who do this modification would also just sell and post you the 1 inch pipes pre-shaped, so just holes and welding required for £100+VAT http://www.haywardandscott.com/porsche/986-987-boxster-1.html

I keep meaning to do this mod but haven't got round to it as yet, one day.

 

[T Pot]

well, i finally did it today, i used 38mm OD pipe, started her up, and she sounded amazing, give her a little rev, and she sounded foul, simply sounds as if the back box has failed and blowing its nuts off, i cant stand it, it doesnt sound nice, its soo chavy.

im thinking maybe if i cut the pipe and weld in a washer to reduce the internal bore if that will reduce the hollow rasp enough to make it sound better. if that wont work, im going to remove the pipe and weld up the hole it sounds that bad

 

[jeegnesh]

You fancy putting some audio clips of the sound? And pics of what you did, be good to see and hear.

The H&S mod that everyone raves about uses a 1" pipe so maybe the fact you used a bigger pipe changes the tone.

 

[jeegnesh]

http://www.youtube.com/watch?v=QwYaKx0wec4&feature=youtube_gdata

Sounds nothing like this then?

 

[T Pot]

ORIGINAL: jeegnesh

http://www.youtube.com/watch?v=QwYaKx0wec4&feature=youtube_gdata

Sounds nothing like this then?

on tick over, id say yes sounds same maybe mine a little deeper. but once revs are up, mine sounds far worse than that clip, im going to try and reduce the bore with welded washers or i may just change the pipe to 22mm and see how that goes.

ill try and get some clips of it later, for you to hear

 

[jeegnesh]

Any chance of getting 25mm pipes that what everyone seems to be happy with, I think the size of that pipe effects the sound ALOT.

How are you bending those pipes to shape? Any chance you would do an extra set of 25mm pipes for me at some cost off course?

 

[T Pot]

ORIGINAL: jeegnesh

Any chance of getting 25mm pipes that what everyone seems to be happy with, I think the size of that pipe effects the sound ALOT.

How are you bending those pipes to shape? Any chance you would do an extra set of 25mm pipes for me at some cost off course?

i dont have a pipe bender, so mine were slit bent and welded up, you cant see them from behind, ill post a pic now in 5.
id happily make you a set, but you better see them first mate

 

[T Pot]

here are some links to the pics, and a short clip

http://img.photobucket.com/albums/1003/probe/2010-06-06124028.jpg
http://img.photobucket.com/albums/1003/probe/2010-06-06124049.jpg
http://img.photobucket.com/albums/1003/probe/2010-06-06124044.jpg
http://www.youtube.com/watch?v=NExzmmxyXrU

 

[jeegnesh]

The workmanship on the pipes looks good mate. The sound however not so nice, would be interested in the pipes if the sound was right.

If this is any help, here are pictures of the Oettle bypass, the run the pipe over and down, not sure if that makes a sound difference too with the extra curves, or is just better hiding.

Your images put

and it will shows pics in the post itself

 

[jeegnesh]

Here the picture from Hayward and Scott website of there mod:

 

[jeegnesh]

Any progress mate?

 

[T Pot]

pipe should be delivered today, so hopefully will do it tomorrow if i can get time

ill post back as soon as i have promise

 

[jeegnesh]

Just thought, you have a 2000 2.7 and mine is 1997 2.5 is the exhausts the same? (Mine is the same as the pictures posted).

Just querying in case you went through the trouble of making another set of pipes and it turned out that our exhausts are different []

 

[T Pot]

I honestly would not know that mate, im new to this porsche stuff.

depending on where you are, im near swansea and would be happy to sort if if you can ,make it to mine.

i have to add, its my mate does the welding not myself, but with the pipe and his time the mod cost me around £35 to £40

so i would guess, any local guy to yu could sort it if your far away mate.

 

[jeegnesh]

I'm in West London, so a little far. Lets see how you get on and what it sounds like first. Also when you working on the car, if you can get more pics of the exhaust, I can try and match up, and meantime I can lookup on the web and see if there a difference.

 

[T Pot]

just spoken to the guy i had the pipe from, and the smallest he can supply is 25mm, so im guessing by the time the weld hits the id, it should be down to 20mm anyway. fingers crossed, welder is booked for tomorrow now

 

[jeegnesh]

I'm no pro at this so take my advice with a pinch of salt. Where the pipe goes into the original exhaust you should not lose any mm's because you flush it in and weld around the outside. The joins of the pipe your doing is where you might lose a little but see if your welder mate know any tricks like a sleeve to join and weld the sleeve or something. Just trying to guide you to stick to the tried and tested version as everyone who done that raved about it.

No joy here yet about figuring out if the exhuast are the same or same shape. I have asked locally but they all seem to say the same thing and that they don't work with 25mm pipes.