997.2 Exhaust Upgrades - Analysis/Options

[JWatson911]

There's a definite wif of old cream cheese bagel under my 997. I've got some bolt removing sockets on the way. The thing that stopped us was that 3rd and higher nut. The half moon spanner didn't grab the nut, so it all stopped there. Hopefully I can grab it with these sockets. The thread on most of the bolts had completely gone. Will be trying again next weekend.

[chrisABP]

JWatson911 said:

There's a definite wif of old cream cheese bagel under my 997. I've got some bolt removing sockets on the way. The thing that stopped us was that 3rd and higher nut. The half moon spanner didn't grab the nut, so it all stopped there. Hopefully I can grab it with these sockets. The thread on most of the bolts had completely gone. Will be trying again next weekend.

My 19,000 mile GTS had nuts which resembled something recovered from the Titanic when we fitted the 1st Sharkwerks exhaust upgrade. That's why we include the additional fitting instructions for UK cars along with the new stainless steel bolts etc. The top nut (of the 3) is the most difficult to get at and takes some perseverance...

Douse it with WD40 this week and best of luck next weekend!

Chris

[Magic919]

The garage that fitted mine removed the rear PU. Aside from the bolts, they replaced the pair of exhaust clamps too.

[jackwood]

Sports and Classic did mine.

At 47k miles my car is probably as bad as they are going to get.

We had to heat up and chisel off all 6 manifold nuts.

The studs you just heat up and hammer back through the flange. Then replace with new bolts.

Don't forget you will need new gaskets too.

They actually had a specially bent crescent spanner to do the upper, difficult to get to, flange nut. Very handy.

All work was done with the rear PU on the car.

Jack

[chrisABP]

And in this months GTPorsche mag you can read all about Jack's Sharkwerks experience on his 997.2 GTS...

[B6JCC]

chrisABP said:

And in this months GTPorsche mag you can read all about Jack's Sharkwerks experience on his 997.2 GTS...

Hi Chris,
Do you still have any of the 997.2 bypass pipes in stock?

[chrisABP]

B6JCC said:

Hi Chris,
Do you still have any of the 997.2 bypass pipes in stock?

We do indeed! We now carry stock of the 997.2 (C2S, GTS etc), 997 GT3 and 991 GT3.

Chris

[B6JCC]

Has anyone fitted the sharkwerks bypass pipes too a 997.2 with the gundo hack?
I don't have PSE but would like a little improvement in the exhaust note, I know the pipes don't make as big a difference just on their own but I'm worried it might be too much with the gundo hack.

[c4sman]

That's a hard one to ask as different people will view a certain loudness of exhaust as just right, too loud or too quiet. I would suggest a staged approach on changing bits one by one although I personally don't like the idea of modding exsisting exhaust unless I have a spare so that it can always be returned to standard. Particularly on £40k plus car.

[Ape50]

Just put a deposit down on a 997.2 with PSE and interested in the Sharkwerk bypass. I know it increases peak power but does anyone have before/after power and torque curves they could upload here ?

Obviously happy with a power hike but not if it's at the expense at lower revs.

[hondansx]

You will feel absolutely no difference in performance.

[hondansx]

B6JCC said:

Has anyone fitted the sharkwerks bypass pipes too a 997.2 with the gundo hack?
I don't have PSE but would like a little improvement in the exhaust note, I know the pipes don't make as big a difference just on their own but I'm worried it might be too much with the gundo hack.

Was under the impression the gundo hack made bugger all difference to the 997.2.

[chrisABP]

Think Sharkwerks measured the power increase in the GTS at +12bhp but have to be honest and say it's difficult to feel a 12bhp gain on a 408bhp car!

The sound improvement alone sounds more than 12bhp's worth ;-)

Chris

[Magic919]

I starting to think the bypass is helping with gaining speed at the top end. Saw 295 km/h on the autobahn, which is 183 instead of the usual 175. Will see how the other car does later in the year.

[Ian_UK1]

Ape50 said:

Just put a deposit down on a 997.2 with PSE and interested in the Sharkwerk bypass. I know it increases peak power but does anyone have before/after power and torque curves they could upload here ?

Obviously happy with a power hike but not if it's at the expense at lower revs.

There's a before/after dyno plot on Sharkwerks site. No loss anywhere in the rpm band, increasing improvement as the revs rise (as you'd expect - there's more improvement where the standard rear silencer is most restrictive). In practice, there's very little noticeable difference: perhaps a tiny bit more urge above 4500rpm and the power doesn't fall away quite as sharply above 6500rpm, but it's very marginal. (Comments apply to standard 997S.2 engine, not X-51).

As correctly stated above, the big difference is the sound.

[Fastfishracing]

Hi Chris, do you still have any in stock?

Does anyone know if there are any issues with Porsche warranty, currently or extending it further with aftermarket exhausts?

Thanks
Jon

[chrisABP]

Fastfishracing said:

Hi Chris, do you still have any in stock?

Does anyone know if there are any issues with Porsche warranty, currently or extending it further with aftermarket exhausts?

Thanks
Jon

Hi Jon

Yes we do (1 left from memory) but we have 5 more arriving early next week too!

I've had some warranty work carried out on my GTS with the exhaust fitted no problem but when it comes to extending the warranty (dependent on the relationship you have with your OPC) you may well have to temporarily refit the OE silencer back in place for the inspection.

Chris

[chrisABP]

As promised we had 5 more 997.2 Sharkwerks exhausts arrive in today.

Any GTS owner without one of these is missing out on so much pleasure.....

[Magic919]

But not just the GTS, Chris.

[chrisABP]

Magic919 said:

But not just the GTS, Chris.

Indeed Magic919 - any 997.2 C2, C4, C2S, C4S, GTS and it fits cars with the standard or PSE system ;-)

Chris