Notices
GT3/GT2 Performance and Track Discussion on the Porsche GT3 and GT2

New 996 GT3 Exhaust by SpeedTech

 
  #31  
Old 07-02-2012, 05:14 PM
Number54's Avatar
Registered User
Join Date: Mar 2010
Location: San Francisco, CA
Posts: 37
Rep Power: 11
Number54 is on a distinguished road
I understand "optimal" exhausts for turbo and non-turbo are quite different. Specifically, turbos benefit from not having an exhaust at all - you want the least restrictions possible. Drag racers run dumps on F/I cars to ditch the exhaust path. But N/A cars are more difficult, with some back-pressure being beneficial.

Isn't this correct?

Basically I'm echoing AudiOn19s opinion that a proper before/after dyno sheet is the only way some of us can get over our fear of decreasing performance.
 
  #32  
Old 07-02-2012, 08:39 PM
John@SpeedTech's Avatar
Basic Sponsor
Thread Starter
Join Date: Apr 2008
Location: NorthEast US
Posts: 2,996
Rep Power: 218
John@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond repute
We have customers reporting approximately a 10 Hp gain going to the same X-pipe with high flow cats on the NA 996. If you look at most of the high performance exhaust systems used on 996 GT3 cup cars or race cars that have made more power on the 996 GT3, they all use a high flow design, very similar to what we have done, many eliminating the restrictive cats all together, such as on the Porsche FIA GT3-RSR race car, which uses an open exhaust with NO cats.

Many years ago when cars did not have computers (ECU's) a car could lose power with too much flow (reduced back pressure) because it would change the air/fuel mixture and the car could not adjust to a proper mix. With new modern engines, the ECU's adapt to increased flow and send more fuel, making more power. Our opinion is that back pressure is not required here - increased air flow and increased fuel is the key to unleashing more power.

I am extremely confident of the gains this exhaust will provide, therefore, I am willing to guarantee a HP increase, on top of the huge weight savings - not to mention the great sound! If you are not satisfied with the power after installation and/or a before/after dyno, I will allow a return for a full refund of the purchase price.
 
__________________
John D (former posts as John D, 2003)
'02 996TT - K24/18G w/SpeedTech Upgrades
Photos - '02 996TT & '97 993TT

www.speedtechexhausts.com
facebook
YouTube
Testimonials
[email protected]
ECU Tuning

Last edited by [email protected]; 05-28-2013 at 10:16 PM.
  #33  
Old 07-03-2012, 12:10 AM
nw94rs's Avatar
Registered User
Join Date: Feb 2012
Location: Arlington WA
Posts: 46
Rep Power: 9
nw94rs is on a distinguished road
Nice to see people still developing parts for the 996.
 
  #34  
Old 08-01-2012, 01:49 AM
John@SpeedTech's Avatar
Basic Sponsor
Thread Starter
Join Date: Apr 2008
Location: NorthEast US
Posts: 2,996
Rep Power: 218
John@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond repute
Many of you have asked for a picture of our 996 GT3 exhaust. Here is one configured as if it were on the car. It also has the OEM muffler connection pipes pictured...

This is a system we recently built for a customer. It weighed in at 27 lbs. complete...the same weight as just the OEM cat pipes on the 996 GT3.

 
Attached Images  
__________________
John D (former posts as John D, 2003)
'02 996TT - K24/18G w/SpeedTech Upgrades
Photos - '02 996TT & '97 993TT

www.speedtechexhausts.com
facebook
YouTube
Testimonials
[email protected]
ECU Tuning

Last edited by [email protected]; 05-18-2013 at 05:18 PM.
  #35  
Old 08-01-2012, 10:15 PM
John@SpeedTech's Avatar
Basic Sponsor
Thread Starter
Join Date: Apr 2008
Location: NorthEast US
Posts: 2,996
Rep Power: 218
John@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond repute
Close-up of our newly designed 996 GT3 "Le Mans" style mirror polished tip.



 
__________________
John D (former posts as John D, 2003)
'02 996TT - K24/18G w/SpeedTech Upgrades
Photos - '02 996TT & '97 993TT

www.speedtechexhausts.com
facebook
YouTube
Testimonials
[email protected]
ECU Tuning

Last edited by [email protected]; 08-01-2012 at 10:54 PM.
  #36  
Old 08-19-2012, 10:21 PM
John@SpeedTech's Avatar
Basic Sponsor
Thread Starter
Join Date: Apr 2008
Location: NorthEast US
Posts: 2,996
Rep Power: 218
John@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond repute
These are made to order - we are going to be producing one of these systems in the next few weeks - anyone want to add on to the production run?
 
__________________
John D (former posts as John D, 2003)
'02 996TT - K24/18G w/SpeedTech Upgrades
Photos - '02 996TT & '97 993TT

www.speedtechexhausts.com
facebook
YouTube
Testimonials
[email protected]
ECU Tuning
  #37  
Old 05-18-2013, 05:22 PM
John@SpeedTech's Avatar
Basic Sponsor
Thread Starter
Join Date: Apr 2008
Location: NorthEast US
Posts: 2,996
Rep Power: 218
John@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond repute
Here are pictures of two systems just shipped this past week -

X-Pipe with Hi-Flow Cats for aftermarket mufflers


Complete SpeedTech 996 GT3 X-Pipe Exhaust System
 
Attached Images   
__________________
John D (former posts as John D, 2003)
'02 996TT - K24/18G w/SpeedTech Upgrades
Photos - '02 996TT & '97 993TT

www.speedtechexhausts.com
facebook
YouTube
Testimonials
[email protected]
ECU Tuning
  #38  
Old 05-28-2013, 10:28 PM
John@SpeedTech's Avatar
Basic Sponsor
Thread Starter
Join Date: Apr 2008
Location: NorthEast US
Posts: 2,996
Rep Power: 218
John@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond repute
Originally Posted by homer997 View Post
Hi John,

do you or can you get a decibel level with turn downs. 92 decibel max at Mont Tremblant circuit. WOuld it pass?

Thanks
Vince,

The system passed at Tremblant this past week. The driver was not bashful with the throttle and did some WOT passes right by the sound person at multiple locations throughout the day!

Also, the weather was overcast with low clouds, which makes passing even more difficult.

The same customer drove 2.5 hrs. one way to the track with his wife. He was concerned and asked his wife how the new exhaust was and she said it was fine, sounded good and did not bother her at all....they both enjoyed the sound!

That's the latest update.
 
__________________
John D (former posts as John D, 2003)
'02 996TT - K24/18G w/SpeedTech Upgrades
Photos - '02 996TT & '97 993TT

www.speedtechexhausts.com
facebook
YouTube
Testimonials
[email protected]
ECU Tuning
  #39  
Old 05-29-2013, 07:10 AM
John@SpeedTech's Avatar
Basic Sponsor
Thread Starter
Join Date: Apr 2008
Location: NorthEast US
Posts: 2,996
Rep Power: 218
John@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond repute
Also, the car did not require the turn down track tips to pass either - it was running our straight "Le Mans" style polished tips (which got their name from debuting on a customer car at the Circuit de la Sarthe, Le Mans, France)

Here is a video from the front straight at Mont Tremblant:
 
__________________
John D (former posts as John D, 2003)
'02 996TT - K24/18G w/SpeedTech Upgrades
Photos - '02 996TT & '97 993TT

www.speedtechexhausts.com
facebook
YouTube
Testimonials
[email protected]
ECU Tuning
  #40  
Old 07-24-2013, 10:10 AM
John@SpeedTech's Avatar
Basic Sponsor
Thread Starter
Join Date: Apr 2008
Location: NorthEast US
Posts: 2,996
Rep Power: 218
John@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond repute
Another good video of this system - identical to the one that passed Mt. Tremblant

 
__________________
John D (former posts as John D, 2003)
'02 996TT - K24/18G w/SpeedTech Upgrades
Photos - '02 996TT & '97 993TT

www.speedtechexhausts.com
facebook
YouTube
Testimonials
[email protected]
ECU Tuning
  #41  
Old 09-04-2013, 08:59 PM
Registered User
Join Date: Aug 2013
Location: Boston
Posts: 27
Rep Power: 7
rbahr is on a distinguished road
Hi All,

Any before and after dyno runs? what sound levels have you measured - Calabogie has a 98Db requirement and LCMT is a bit lower?

TIA

Ray
 
  #42  
Old 09-24-2013, 10:05 PM
John@SpeedTech's Avatar
Basic Sponsor
Thread Starter
Join Date: Apr 2008
Location: NorthEast US
Posts: 2,996
Rep Power: 218
John@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond repute
This system has passed sound testing at LMCT on a few cars...so no problem's there...Our design car owner did not want us to dyno his car, so no dyno on this one...
 
__________________
John D (former posts as John D, 2003)
'02 996TT - K24/18G w/SpeedTech Upgrades
Photos - '02 996TT & '97 993TT

www.speedtechexhausts.com
facebook
YouTube
Testimonials
[email protected]
ECU Tuning
  #43  
Old 09-24-2013, 10:10 PM
John@SpeedTech's Avatar
Basic Sponsor
Thread Starter
Join Date: Apr 2008
Location: NorthEast US
Posts: 2,996
Rep Power: 218
John@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond repute
Just completed this 996 GT3 full catless "RACE" system with complete ceramic coating today!





 
Attached Images    
__________________
John D (former posts as John D, 2003)
'02 996TT - K24/18G w/SpeedTech Upgrades
Photos - '02 996TT & '97 993TT

www.speedtechexhausts.com
facebook
YouTube
Testimonials
[email protected]
ECU Tuning
  #44  
Old 10-04-2013, 01:36 PM
Chad@SpeedTech's Avatar
Basic Sponsor
Join Date: Apr 2008
Location: NorthEast US
Age: 36
Posts: 161
Rep Power: 21
Chad@SpeedTech is just really niceChad@SpeedTech is just really niceChad@SpeedTech is just really niceChad@SpeedTech is just really nice
We recently sold a system and the customer wanted the headers ceramic coating in a brilliant silver/chrome. We were able to do so and customer was very happy with the results.

Ceramic coating is available in multiple colors, not just black. PM for options if interested.
 
__________________
Chad Demetry
PH: 603-464-3235

facebook
YouTube see our videos

www.speedtechexhausts.com
Email-[email protected]
  #45  
Old 08-15-2015, 09:37 AM
John@SpeedTech's Avatar
Basic Sponsor
Thread Starter
Join Date: Apr 2008
Location: NorthEast US
Posts: 2,996
Rep Power: 218
John@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond reputeJohn@SpeedTech has a reputation beyond repute
We just completed fabrication of a lightweight "FULL RACE" 996 GT3 system for a customer. It has cat bypass pipes, muffler bypass pipes and simple lightweight outlet pipes (no tips with polished outer layer). Here is is packed and getting ready for shipping.

 
__________________
John D (former posts as John D, 2003)
'02 996TT - K24/18G w/SpeedTech Upgrades
Photos - '02 996TT & '97 993TT

www.speedtechexhausts.com
facebook
YouTube
Testimonials
[email protected]
ECU Tuning

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: New 996 GT3 Exhaust by SpeedTech


Join 6SpeedOnline
Visit our Sponsors

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.