Really? All other reports I've read said that the combo of tubi mufflers and sport cats were loud but not a good sound.

Interesting. I love the way my tubis sound, but often wish for more volume and a little more raw sound. Maybe I should try this...

 

Axxlrod- how would you compare the sound of your Tubi exhaust to PSE- thanks!

 

almost brand new Tubi exhaust for sale for 997.1/S

https://www.6speedonline.com/forums/...-old-1-5k.html

 

Are you stating that putting a different exhaust (High flow cats is one part, but from most reading it's supposed to be the difference maker in the 997.1) doesn't make much of an HP difference? Also, if it is true you can get more HP from a full non-OEM exhaust, which piece is the difference maker and what HP gain (at crank) can you expect from a full system?

 

Can't say I care a great deal for the Tubi... it changes that classic Porsche sound a little, higher pitched.

 

I hate to quote myself, but I need to state that I am now running the exact configuration that I said a few months ago had heard sounds horrible. It sounds awesome actually. Kinda a combo between tubi and PSE, but louder.

 

I had this combo on my car for less than 10 minutes - the volume was deafening, just blipping the throttle in the shop made all conversation impossible and the quality of sound was like a 1950's tractor with a bloody great big hole in the exhaust.

On road, you couldn't hear a passenger, or the engine, or the sirens of all the local police who'd immediately latched on to you!

Trust me on this one - just don't go there unless you only want to use your car for a couple of minutes a week and don't mind a hell of a lot of very negative attention.

The Tubis are already quite loud with the standard cats - in fact this combo is possibly the best sounding all-rounder for the 997S. If you add equal-length headers too, then you'll get an even crisper, more 'tuned' sound than with the stock header.

 

Whilst I don't doubt your honesty on this one, I can also say with certainty that it's a very unusual outcome for a 997S.1. The differences a full exhaust with 200-cell cats makes is not in any way subtle. The increase in mid-range torque is particularly noticeable. Even more noticeable is how (relatively) gutless and anaemic the performance of the car feels when you go back to stock.

Apart from the subjective change, my car also showed a very healthy measured increase at the wheels when fitted with a full AWE system and BMC-F1 filter panel. The dyno runs before fitment averaged 304 wheel HP. After installation the runs were less consistent (possibly the ECU adapting, but also due to some temp variation) and were between 326 and 331 wheel HP. (The highest result was first, followed by the lowest, then a run of 328 that I'd assume is representative). This was on a very expensive Bosch dyno at one of the most renowned tuners in the UK.

I know there are a lot of other people on here who have had similar results. Why yours were different I'm not sure, but they are directly at odds with my own experience and those of others.

 

Sound, both tone and volume, is subjective. You ran this combo for 10 minutes, and took it off since you didn't like it. I've been running it for over 5 months, and love it. Although maybe the difference here is that I am running the Fabspeed X-Pipe sport cats, instead of the AWE cats. I know the x-pipe does change the acoustics somewhat; maybe that is the difference here.

 

For the 3234234234th time (I may be rounding), the ONLY (did I say only) reason for getting an aftermarket exhaust is sound. 2,3,5,8 HP (etc) is so miniscule I'll bet my car NO ONE can determine the difference - and the people who say "my car breathes better" (since when does your car have sleep apnea) is human's way of justifying spending 5K on something.

That being said - industry standard for exhaust these days is Tubi and Cargraphic. There is a consensus on this. I've had both and prefer Tubi, but would be very happy with Cargraphic.

Oh, and yes you get what you pay for like MOST things in life.

Sorry for the lecture.

 

Shame I'm in the UK - yours would be an interesting combo to listen to. You are right that an X-pipe totally transforms the sound as all the exhaust pulses from each bank are caused to overlap to some extent giving a much smoother sound more akin to a straight-6 engine. Without the X-pipe, all you hear are individual, separated 'bangs' from each tailpipe if you open up the exhaust too much which was the effect I was getting with the AWE cats/Tubi combo.