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Drew1209
Trainee


Joined: 31 Aug 2016
Posts: 71



PostPosted: Fri Aug 04, 2017 4:03 pm    Post subject: Reply with quote

Is there any gain swapping out my standard cats for 200 cell items while retaining my standard gundo hacked exhuast
 
  
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Phil 997
Yas Marina


Joined: 05 Dec 2015
Posts: 8903
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Sat Aug 05, 2017 12:19 am    Post subject: Reply with quote

Well in theory the gundo is bypassing some of the exhaust therefore increasing gas exit flow , so I see no reason why the 200 cell cats wouldnt further increase the flow as the stock cats must now be the most restrictive part of the system. Thumb
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medmick
Silverstone


Joined: 11 Jun 2016
Posts: 134
Location: Winchester-ish


PostPosted: Sat Aug 05, 2017 5:50 am    Post subject: Reply with quote

Drew1209 wrote:
Is there any gain swapping out my standard cats for 200 cell items while retaining my standard gundo hacked exhuast

From Gert Carnewal's website ref 200 cell cats:
"The result is a 10 HP and 10Nm torque increase and a louder and deeper sound"
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James M-S
Monza


Joined: 11 Apr 2017
Posts: 160
Location: Derby


PostPosted: Sun Aug 06, 2017 9:59 pm    Post subject: Reply with quote

£11 great mod, remove that minging number plate plinth, and buy a fully legal stick on plate from dmbgraphics.


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rob_p
Imola


Joined: 20 Oct 2013
Posts: 767
Location: Leicester


PostPosted: Mon Aug 07, 2017 8:02 pm    Post subject: Reply with quote

Drew1209 wrote:
Is there any gain swapping out my standard cats for 200 cell items while retaining my standard gundo hacked exhuast


I tried this last year. I have gundo (1.5inch pipe) and added 200 cell cats.
BIG mistake (for me at least) - it was far too loud and some nasty resonance etc. I lasted 3 weeks and removed them.

You have been warned.....

Standard cats with gundo is just right IMHO.
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911DG
Monza


Joined: 23 Nov 2008
Posts: 174



PostPosted: Fri Aug 11, 2017 1:28 pm    Post subject: Reply with quote

James M-S wrote:
£11 great mod, remove that minging number plate plinth, and buy a fully legal stick on plate from dmbgraphics.



Like that - would Never have thought of it either - Nice. Gotta love an £11 mod Thumb

Dan
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911DG
Monza


Joined: 23 Nov 2008
Posts: 174



PostPosted: Fri Aug 11, 2017 1:41 pm    Post subject: 3 New Mods this week... :) Reply with quote

Been a Great week for the Porker... Thumb

1 - Gundo Hack this morning by Paul. OMG thats more like it !!! Love it Bandit

2 - Red front seat belts ! Look great - great mod on the black beast. Goes well with the res S and the big red callis.

3 - 15mm space all round. Pops the 19''s right out.

Cheers

Dan
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Phil 997
Yas Marina


Joined: 05 Dec 2015
Posts: 8903
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Fri Aug 11, 2017 7:03 pm    Post subject: Reply with quote

Looking good Dan, And the slippery modding slope begins Grin Grin dont forget to hide all the receipts from Mrs.911DG and Lie through your teeth about what they actually cost Grin Grin Thumb
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911DG
Monza


Joined: 23 Nov 2008
Posts: 174



PostPosted: Fri Aug 11, 2017 8:31 pm    Post subject: Reply with quote

LOL this is NOT my first rodeo Smile. She knows nothing .... ! Spacers and seat belts - why bother the other half with such trivial matters Grin
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Phil 997
Yas Marina


Joined: 05 Dec 2015
Posts: 8903
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Fri Aug 11, 2017 11:53 pm    Post subject: Reply with quote

911DG wrote:
LOL this is NOT my first rodeo Smile. She knows nothing .... ! Spacers and seat belts - why bother the other half with such trivial matters Grin


Grin Grin Thumb absolutely they have so many other things to worry about Thumb Wink
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911TEL
Imola


Joined: 29 Oct 2007
Posts: 850
Location: Inverness & Oman

2011 Porsche 997 Turbo S

PostPosted: Sat Aug 12, 2017 7:15 am    Post subject: Reply with quote

911DG wrote:
James M-S wrote:
£11 great mod, remove that minging number plate plinth, and buy a fully legal stick on plate from dmbgraphics.



Like that - would Never have thought of it either - Nice. Gotta love an £11 mod Thumb

Dan


Nice one James ....£11...between that one and Gummi Pfledge so far for the best value mod !!!!

Dmb graphics is my next mod ... Going out to the garage right now to look at that .....!
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RJW1881
Monza


Joined: 10 Aug 2015
Posts: 202
Location: Holbeach

2007 Porsche 997 Turbo

PostPosted: Sat Aug 12, 2017 7:31 am    Post subject: Reply with quote

Norfolk & Idea wrote:
nigel99 wrote:
If its a Gen 2 then I'd recommend the Hayward and Scott center silencer bypass. Bargain for £400.

Gen 1 id replace the PCM with an aftermarket unit.

Also, either gen, H&R lowering springs will make a noticeable improvement to the stance, especially with the 15mm spacers.


I love the (lightly) slammed look and 15mm spacers. I made inquiries about it but was told it will compromise handling. Err, so that was the end of that. Open to differing opinions.


I had mine dropped 20mm on H&R springs with 15mm spacers and love it. On a rough country B road there is some occasional scraping but on any other roads it's an improvement and looks awesome.
I'm picking the car up from dove house today after they have MOT'd, fitted the DSC TPC module (and a few other bits). I'm looking forward to seeing what difference the module makes!
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Buell XB12 - carbon/ exhaust/ remap/ lowered
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rob_p
Imola


Joined: 20 Oct 2013
Posts: 767
Location: Leicester


PostPosted: Sat Aug 12, 2017 10:09 am    Post subject: Reply with quote

RJW1881 wrote:
Norfolk & Idea wrote:
nigel99 wrote:
If its a Gen 2 then I'd recommend the Hayward and Scott center silencer bypass. Bargain for £400.

Gen 1 id replace the PCM with an aftermarket unit.

Also, either gen, H&R lowering springs will make a noticeable improvement to the stance, especially with the 15mm spacers.


I love the (lightly) slammed look and 15mm spacers. I made inquiries about it but was told it will compromise handling. Err, so that was the end of that. Open to differing opinions.


I had mine dropped 20mm on H&R springs with 15mm spacers and love it. On a rough country B road there is some occasional scraping but on any other roads it's an improvement and looks awesome.
I'm picking the car up from dove house today after they have MOT'd, fitted the DSC TPC module (and a few other bits). I'm looking forward to seeing what difference the module makes!


That looks totally awesome..... Great photo.
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997.1 C2 (full Hartech rebuild, Ohlins coilovers, ducktail, plus some other bits)
Jeep Grand Cherokee WK2
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911DG
Monza


Joined: 23 Nov 2008
Posts: 174



PostPosted: Sat Aug 12, 2017 6:25 pm    Post subject: Reply with quote

RJW1881 wrote:
Norfolk & Idea wrote:
nigel99 wrote:
If its a Gen 2 then I'd recommend the Hayward and Scott center silencer bypass. Bargain for £400.

Gen 1 id replace the PCM with an aftermarket unit.

Also, either gen, H&R lowering springs will make a noticeable improvement to the stance, especially with the 15mm spacers.


I love the (lightly) slammed look and 15mm spacers. I made inquiries about it but was told it will compromise handling. Err, so that was the end of that. Open to differing opinions.


I had mine dropped 20mm on H&R springs with 15mm spacers and love it. On a rough country B road there is some occasional scraping but on any other roads it's an improvement and looks awesome.
I'm picking the car up from dove house today after they have MOT'd, fitted the DSC TPC module (and a few other bits). I'm looking forward to seeing what difference the module makes!


Oh Good God now you've got me thinking about another Mod - getting her lowered 20mm on those H&R springs !!! Yours looks awesome.
What's the rough cost for springs and fitting ???
Does it compromise handling ????
And .... mine is already low and scrapes on car park ramps - another 20mm could be curtains ???

What do you recon ?
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Then:
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- 993 C4 Cab (Black ith beige)
 
  
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nigel99
Suzuka


Joined: 16 Jul 2015
Posts: 1064
Location: Surrey

2009 Porsche 997 Carrera 2S

PostPosted: Sat Aug 12, 2017 7:13 pm    Post subject: Reply with quote

911DG wrote:
RJW1881 wrote:
Norfolk & Idea wrote:
nigel99 wrote:
If its a Gen 2 then I'd recommend the Hayward and Scott center silencer bypass. Bargain for £400.

Gen 1 id replace the PCM with an aftermarket unit.

Also, either gen, H&R lowering springs will make a noticeable improvement to the stance, especially with the 15mm spacers.


I love the (lightly) slammed look and 15mm spacers. I made inquiries about it but was told it will compromise handling. Err, so that was the end of that. Open to differing opinions.


I had mine dropped 20mm on H&R springs with 15mm spacers and love it. On a rough country B road there is some occasional scraping but on any other roads it's an improvement and looks awesome.
I'm picking the car up from dove house today after they have MOT'd, fitted the DSC TPC module (and a few other bits). I'm looking forward to seeing what difference the module makes!


Oh Good God now you've got me thinking about another Mod - getting her lowered 20mm on those H&R springs !!! Yours looks awesome.
What's the rough cost for springs and fitting ???
Does it compromise handling ????
And .... mine is already low and scrapes on car park ramps - another 20mm could be curtains ???

What do you recon ?


I have the same car as you. Springs were around £250 and fitting was about £600 which included a full geometry setup.

I love how it looks, handling is no different but I don't like the scrapping noise every time theres a speed bump or in a car park. I often think about switching back but then I look at it and decide against!
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Phil 997
Yas Marina


Joined: 05 Dec 2015
Posts: 8903
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Sat Aug 12, 2017 11:49 pm    Post subject: Reply with quote

Grin If it doesnt scrape then its too high Grin if you want to sit high get a cayenne. everytime mine scrapes it just confirms I have the car at the right height and also that our roads are in a shocking state Thumb
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RJW1881
Monza


Joined: 10 Aug 2015
Posts: 202
Location: Holbeach

2007 Porsche 997 Turbo

PostPosted: Sun Aug 13, 2017 4:47 pm    Post subject: Reply with quote

911DG wrote:
RJW1881 wrote:
Norfolk & Idea wrote:
nigel99 wrote:
If its a Gen 2 then I'd recommend the Hayward and Scott center silencer bypass. Bargain for £400.

Gen 1 id replace the PCM with an aftermarket unit.

Also, either gen, H&R lowering springs will make a noticeable improvement to the stance, especially with the 15mm spacers.


I love the (lightly) slammed look and 15mm spacers. I made inquiries about it but was told it will compromise handling. Err, so that was the end of that. Open to differing opinions.


I had mine dropped 20mm on H&R springs with 15mm spacers and love it. On a rough country B road there is some occasional scraping but on any other roads it's an improvement and looks awesome.
I'm picking the car up from dove house today after they have MOT'd, fitted the DSC TPC module (and a few other bits). I'm looking forward to seeing what difference the module makes!


Oh Good God now you've got me thinking about another Mod - getting her lowered 20mm on those H&R springs !!! Yours looks awesome.
What's the rough cost for springs and fitting ???
Does it compromise handling ????
And .... mine is already low and scrapes on car park ramps - another 20mm could be curtains ???

What do you recon ?


Dove House supplied and fitted the springs with a full fast road geo set up for £900 inc VAT.

It slightly improved the body roll but the main reason for me doing it was the appearance, which I love.

Mine now scrapes the splitter on aggressive speed humps but it's a small price to pay.

I've just done 300 miles in the car and can report the DSC TPC module was money well spent, the active damping is a big improvement and well worth the cost.
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Buell XB12 - carbon/ exhaust/ remap/ lowered
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RJW1881
Monza


Joined: 10 Aug 2015
Posts: 202
Location: Holbeach

2007 Porsche 997 Turbo

PostPosted: Sun Aug 13, 2017 4:51 pm    Post subject: Reply with quote

Phil 997 wrote:
Grin If it doesnt scrape then its too high Grin if you want to sit high get a cayenne. everytime mine scrapes it just confirms I have the car at the right height and also that our roads are in a shocking state Thumb


My thoughts exactly!
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