So here it is - before and after dyno graph of my SW LT install. All mods in sig.

First run was before the LT install in green and it put down 394/386 (88.35 F, 29.30 in-Hg, 59% Humidity, STD: 1.06).

The two other runs were after the LT install and had basically the same results. It put down 424/404 (76.62 F, 29.22 in-Hg, 46% Humidity, STD: 1.04)



Thanks to Woodbine Motorsports for doing a wonderful install and running the car on the dyno. Thanks to Beefcake for supplying the LT setup.

 

Good numbers! Beefcake...good dude.

 

What is LT?

 

Long tube headers.

 

Cant beat them numbers. Congrats!

 

Nice Numbers!!!

 

Very Nice. The new 5.0's are no joke when it comes to mods. Slight mods get the job done on these cars.

 

 

Depending on who you ask...

 

I see you're in Northern, VA. Do you plan on swapping out the offroad x-pipe for emissions testing?

 

Basically.

 

Those sure are some banging numbers man..

NOW LETS HEAR THIS SUCKER!! VIDEO

 

Very inspiring... nice to see someone getting their money's worth out of a mod!

IMO, an "off road" x pipe is off limits...I just can't stomach that. How much performance do you give up by staying legal?

 

On a basic bolt-on setup, not a whole lot of difference between catted vs catless longtubes. Maybe 5 WHP or so?

 

I believe Gus said with long tube you have no chance of passing emissions. If thats true I'd just keep the cat in the bag (sort of) like Ivan 5.0 did.

 

Good to hear that!

Yeah... but even if I was pretty sure I wouldn't get caught, I still don't dump my used oil out in the woods... Not trying to sound pious here but keeping raw fuel vapors out of the atmosphere is a good thing, IMO.

So, what is it about the headers that make them emissions illegal? Sometimes they don't have accommodations for sensors, etc. but I don't think that's the case here... is it just that they haven't been CARB approved or something ?

It's a shame b/c headers themselves obviously don't add any emissions.

 

Something about the repositioning of the cats themselves.

 

I heard it was the tune that was required for the LT's is what makes them not pass an emissions test. Ya might want to ask someone that makes tunes for a proper answer, I don't remember exactly what was said.

 

Ive never had anyone ask about the longtube headers in VA. In VA its just a visual check. When I had the converters, they never said anything. HP wise they don't make that much of a difference. Now in the sound deparment the off-road x-pipe was ALOT louder and I think it sounds better.