997.2 exhaust reviews

[Thomps84]

I have spent some considerable amount of time tinkering with exhaust options for my 997.2 C2 and i thought it may be worth putting it all down on here in one place for future members to read.

AIM - More noise from a quiet car.

CENTRE MUFFLER DELETE. I opted for a TopGear one, couldn't see any real benefit for me to go for anything more expensive. Quite easy to fit once you get them damn bolts off, i replaced them all with stainless ones, M8. The result was a better grunt, not very noticeable to be honest but it did make a difference for a small outlay.

GUNDO HACK & CENTRE MUFFLER DELETE. I used a 1.5" pipe to connect between the inlet and outlet pipes. The result was a far better noise output and some crackles as you let off the gas. Howls about 5000rpm, town driving was nice and nothing too loud. In my garage the dB averaged from cold start to settling down 90.4.

DESIGNTEK VALVETRONIC BOXES AND CENTRE MUFFLER DELETE - I thought i'd get a better noise using dedicated valved boxes rather than a gundo hack. The result was a quieter, more refined tone that wasn't noticeable until you open the car up and get past 4000 / 5000rpm. It wasn't as throaty and had no crackles. You could hear the engine induction over the exhaust tone with this setup once in the higher rev ranges.

SIDE MUFFLER DELETE AND CENTRE MUFFLER DELETE. This was putting a smile on my face, oh boy it sounded well. It did have cabin drone when you labored the engine, say below 2500rpm and applying gas, and it would become tiresome if you didn't avoid that kind of range. It had a nice sound throughout all the rev range, so at low speed cruising you could hear the engine unlike any other combination i had tried that needed opened up to hear things.

OUTCOME - I kept the side and centre muffler delete, and have the DesignTek boxes as a back up for when i get sick of it. Yes it is loud, but to be honest i have sat outside and witnessed my car go past and it isn't ASBO in my opinion. You can happily cruise along and hear nothing, but open it up and it barks to life. Being a weekend car i want to have a feel good factor when i'm driving it and this setup ticks the boxes for me, plus i don't thrash my car all the time as i've got young kids so this was my favored install.

 

[mattwilo]

thanks for this, i have a .2 CS and am looking for options for a louder exhaust so this is really helpful

 

[911UK]

nicely done

this is where we need a video of the new sound

 

[Jonesie]

This is what I have had made…..
Drones like Thomps at low revs but I just feather it.
Some people not keen ( Luke …. ) but I bloody love it.
When it’s dry again I will get a vid of it and post it up.

 

[mattwilo]

did you make and weld that yourself? amazing work, fancy doing mine

 

[FZP]

If you're looking for an off the shelf solution, I can highly recommend the Tubistyle cat back exhaust as a great solution. I had it and it made me keep my .2 significantly longer than I intended to.
I was eyeing up a system for the GTS.
I should be on commission for them.
Great work by thr OP!

 

[Jonesie]

Had it made Matt by Charlie at CGR

 

[MaxA]

Thomps, I'd like to see and hear the video, as essentially you appear to have removed all the silencers!

For the record, I have PSE and the Hayward & Scott rear cross over pipes, and it's more than loud enough for me (especially on a cold start up).

 

[Thomps84]

Thomps, I'd like to see and hear the video, as essentially you appear to have removed all the silencers!

For the record, I have PSE and the Hayward & Scott rear cross over pipes, and it's more than loud enough for me (especially on a cold start up).

They've all gone yes, stock CATs left on the car. It's a bit tricky getting the actual sound over using an iPhone but i'll give it a shot next time i am out.

The best way to hear it is to release the two sleeved clamps from the centre to side mufflers and push them to one side to expose an open end from the centre section. It won't sound the same as mine as the exhaust will not be exiting the rear of the vehicle but it'll give you an idea what things are like.

 

[rga997]

Nice review!

Have the Milltek centre delete on mine - may do the Gundo Hack next...

 

[Bens911s]

I'm also really interested in enhancing the sound on my 2S. Are there any videos or sound clips of any of these solutions?

 

[flatstick]

I have a clip of my 4s with PSE and then with a topgear Xpipe but still not the noise i want so having 200cell cats and manifolds fitted on Friday.
Dean

 

[Jester-UK]

I've got a GTS and after much reading decided on the Hayward and Scott / Milltek cross over pipes design to pair with the PSE.

I noticed Milltek on Black Friday with 20% off making it £485, so ordered on Sunday, delivered on Tuesday this week! Link for anyone interested...

Home

Free UK delivery. Shop stainless steel performance car exhausts today. Find the exhaust for your vehicle.

milltekexhaust-roadrunnermotorsport.co.uk

(Won't be fitting until Christmas, mostly because I need to clear the garage first!)

 

[Jester-UK]

I was seriously considering a bigger upgrade to the Polish Wasptech system, but with suspension work needed and uncertain on import process, I went the safer cheaper route. Worth considering though, looks impressive, loud and (especially for me) having a quiet neighbour option! Found them via Facebook advertising btw, not seen one myself.

It's $3k for 3 sound levels, $600 for X pipe, plus $200ish shipping (plus customs/VAT?!)

 

[Bens911s]

I have a clip of my 4s with PSE and then with a topgear Xpipe but still not the noise i want so having 200cell cats and manifolds fitted on Friday.
Dean

nice
How much did it cost?