Top Speed Bypass pipes initial impression - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Kenny Boxster · 10-02-2012, 05:05 PM

Quote:

Originally Posted by 2000boxster986

Glad your fit worked out well Kenny.... This thread is sort of turning into a catch all for these pipes. Hopefully that is ok with everyone. So, after all of the fitting and communications on these pipes I'm not so thrilled with the outcome. I just took the box for a run and at idle and low rpm is sounds good So, I put my foot in it a bit... Not sure what I was expecting but it sounds like a pumped up 4 banger. Loud, and not even a pleasant loud, just loud! I'm guessing it's the Pedro mod on my exhaust so I'm going to plug those 1" pipes and see how it sounds. The Pedro mod has its place with a stock setup just not with these pipes installed. Anyone else care to comment on their overall impression of the exhaust note's of these pipes?

All mid pipes will do this- it is just a hollow metal tube. I am almost at a loss of words loud when you complain of it being loud when you put your foot on pedal! I am not trying to sound harsh but perhaps you should drive a hybrid if you want something not loud.

2000boxster986 · 10-02-2012, 06:41 PM

Thanks Kenny for the hybrid suggestion. I'm not quite at that point as yet. Maybe next year

. Maybe 'loud' was the wrong word. Maybe I should have said 'noisy'. Not a nice noisy more like just a blowing noise. I've had plenty of V8's with headers and nice exhaust so no I'm not hybrid ready. Yes, this is a straight pipe situation for the 1" muffler bypass but the muffler should be picking up most of it. It just wasn't want I expected. So that's what I shared. I'm after a subtle sports car sound, which is prob something I won't get with the boxster flat six. But, I'm learning here. this is my first Porsche. I posted my thoughts and experience only because this topic is open and the pipes everyone wanted are now available. I shared my install hoping someone with similar fitment issues would benefit from it. So in the same light I shared my disappointment as well. but, you learn and move on. That's a good thing. Sorry if my post offends anyone but it was just that, a post expressing an experience. I'll think twice next time and stick to solid issues. Cheers

shadrach74 · 10-02-2012, 06:59 PM

Quote:

Originally Posted by 2000boxster986

I'm after a subtle sports car sound, which is prob something I won't get with the boxster flat six. Cheers

Really? What did you drive before? 6cyl engines have about the sweetest song this side of a V12. The straight and flat 6's are the best of the breed. With the flat having the most unique engine notes of all IMNSHO... If you are not happy with sound of your flat 6, it is a failure to mod properly or a failure of personal taste. Even a box stock Boxster has a pleasing if not understated exhaust note. I am a fan of Pedro, but not his exhaust mod. It seems pointless and is essentially a self inflicted exhaust leak. I would expect it in the world of fart can Hondas, but not on a Porsche (I know you bought it that way). Keep the bypass pipes and try fitting a standard 986 exhaust or attempt to plug the "leaks" in yours. I think you'll like that much better.

2000boxster986 · 10-03-2012, 05:33 AM

Thanks Shasdrach74, I think you're right on. I'm sure it's the Pedro Mod. I'll pull the muffler this weekend and plug the 1" pipes. I agree, this little six can sound great. Just have to get the right combo. Thanks again,

AndyA6 · 10-03-2012, 07:36 AM

Quote:

Originally Posted by 2000boxster986

Thanks Shasdrach74, I think you're right on. I'm sure it's the Pedro Mod. I'll pull the muffler this weekend and plug the 1" pipes. I agree, this little six can sound great. Just have to get the right combo. Thanks again,

Plugging will do the trick. It will sound very nice, fo sho.....

I drilled my exhaust a little right where the tailpipe is, made a nice and subtle difference as well. Search for the thread called "10HP gain" or something.

Homeboy981 · 10-03-2012, 07:55 AM

Quote:

Originally Posted by Kenny Boxster

All mid pipes will do this- it is just a hollow metal tube. I am almost at a loss of words loud when you complain of it being loud when you put your foot on pedal! I am not trying to sound harsh but perhaps you should drive a hybrid if you want something not loud.

I did the Crios mod a.k.a drilling a ¾" hole in through the back of the muffler and with the Top Speed Cat Deletes - it sounds G-r-r-reat! Not too loud! Is there such a thing? Harleys and other "road furniture" go around without being muffled but IF a car or sportbike tries that it's too loud? O.K. maybe that is a bit too much…but short of that, as long as there is performance to be gained!!!

Now this has me thinking about headers and a cat back systems so my box can GROWL on the PROWL…as we are hunting down F-150s!

black_box · 10-03-2012, 08:51 AM

Still waiting on my replacement test pipes to come in (they did ship ASAP when I called to let them know there was a mixup on the packaged order).

I did want to say that John (Che) was super cool about it and let me keep the gaskets from the old set free of charge so I could swap the pipes around in the future without getting an exhaust leak from reused gaskets.

Still planning to do 3.8 swap, which is sitting in the garage, but will be taking a 700 mile RT with the 3.2 this weekend, so I'd like to swap in the headers and midpipes just to try them out since I have the extra gaskets. Hopefully the exhaust manifolds will come off easily -- I know they were removed 25k miles ago, so they should.

Looking forward to doing the job tomorrow.