VMP Tuning Message Board  

Go Back   VMP Tuning Message Board > VMP Project Cars > 2007 Shelby GT500
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread
Old February 9th, 2011, 12:51 PM   #1
Justin@VMP
Administrator
 
Join Date: Jul 2005
Location: Orlando/Daytona, FL
Posts: 936
Default Dynatech Longtube Headers options for 07-10 and 11-12 GT500

The Dynatech 1 7/8" LTs phsyically bolt up to all 07-12 GT500s because they use the same motor/chassis, but there are some minor differences on 2011+.

The 2011+ GT500 uses a new 2.75" exhaust and switches to an H pipe instead of the X found on 07-10.

They also use wideband front O2 sensors with a different connector.

On 07-10 we traditionally use the Dynatech LTs and 2.5" or 3" x-pipe (retails for $1199).
http://www.vmptuning.com/store/index...356&parent=108
http://www.vmptuning.com/store/index...411&parent=108

If we use the 2.5" x pipe its much smaller than the stock catback, if we use the 3" x pipe its larger and requires the catback be cut down and adapted, which I prefer not to do.

I had a 2011 in the shop last week for TVS and LT install, and this is what I did:


The Dynatech LTs were installed and the 2.75" powercat converters bolted up. Then I cut the the stock H pipe, I believe it needs to be around 22-23" long, measure your individual car first.. The H pipe can be clamped or welded into the cats. Depending on how everything goes together, the H may need to be cut a little bit so the tubes can spread open 1/2" where they go into the cats, this can be done by cutting the back side of the H which allows the tubes that go into the cat to spread out a little, and then welding the H back up. If you weld onto the cats, you may want to bolt everything up a little loose, tack in position, drop it down to weld, and then bolt it back up tight.

Doing it this way allows you to keep the stock H (some prefer it for sound vs an X) and it is actually a little cheaper too, ($1050 total with cats, or $758 without cats):

http://www.vmptuning.com/store/index...356&parent=108

http://www.vmptuning.com/store/index...418&parent=108
or
http://www.vmptuning.com/store/index...419&parent=108

I also sell the parts to do this on 07-10 too, you can buy 2.5" collector adapters or cats and mate them up to your stock 07-10 stamped X pipe (or H pipe on KRs):
http://www.vmptuning.com/store/index...389&parent=108
http://www.vmptuning.com/store/index...423&parent=108
This reduces the cost to $758 no cats or $1048 with cats for LTs on an 07-09.

I will say that my 07 with LTs, 3" X-pipe/cats, and stock mufflers sounded pretty good. If I did it with 2.5" x pipe it would probably be a little quieter with no loss in HP for a sub 800rwhp car. I probably not not be afraid to run LTs/no cats/stock mufflers from a noise perspective on an 07-09 with 2.5" exhaust..

On the 11 with LTs and cats, it is a tad on the loud side (for me), which some may like, but not unbearable IMO. I think the factory exhaust is a little louder with its H pipe and 2.75" muffler, so the LT/cat setup is louder.

For anyone with a 2011-2012 that purchases these, I can include the correct style O2 extension for the new factory widebands.
__________________
Justin Starkey - VMP Tuning - Ford & GM Tuning
Mobile DynoJet 224xLC Load Control
Justin@VMPTuning.com 321-206-9369

2007 Shelby GT500 Ford Racing TVS Blower, VMP 2.6" Pulley, IW 10% OD lower, TB, 697RWHP/702RWTQ
2006 F250 6.0 14.3@93
2000 Mustang 3.8 A4 TT 450RWHP@17psi & 10.9@127.8 1.74 60ft@17psi stock motor
2006 Mustang 4.0 M5 Vortech 15psi 395RWHP 12.5@110 wife's car
Justin@VMP is offline   Reply With Quote
Old September 7th, 2011, 05:41 PM   #2
dbarbarine
Registered User
 
Join Date: Nov 2010
Posts: 1
Default

In your experience, if someone does these modification/enhancements to an 2011-2012, is there a tune change required because the upstream O2s are in a different location?
dbarbarine is offline   Reply With Quote
Old September 30th, 2011, 12:55 PM   #3
Justin@VMP
Administrator
 
Join Date: Jul 2005
Location: Orlando/Daytona, FL
Posts: 936
Default

On 11+ with factory widebands, no.
__________________
Justin Starkey - VMP Tuning - Ford & GM Tuning
Mobile DynoJet 224xLC Load Control
Justin@VMPTuning.com 321-206-9369

2007 Shelby GT500 Ford Racing TVS Blower, VMP 2.6" Pulley, IW 10% OD lower, TB, 697RWHP/702RWTQ
2006 F250 6.0 14.3@93
2000 Mustang 3.8 A4 TT 450RWHP@17psi & 10.9@127.8 1.74 60ft@17psi stock motor
2006 Mustang 4.0 M5 Vortech 15psi 395RWHP 12.5@110 wife's car
Justin@VMP is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 03:16 AM.


Powered by vBulletin Version 3.5.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
VMP Tuning Inc