Tucker

Well, we added American Racing headers to the car this weekend. We opted for the catted version and fit was great. We have it hooked up to a custom 3” Dynomax cat back and WOW, IT'S LOUD! We will be welding on the stock mufflers next week.
With no tune changes made we backed it on the dyno to see if all the hype was true.
Well it is, we picked up as much as 25 RWHP @ 6600rpm through ARH cats for a total of 415+ RWHP. Another local 5.0 gained 27 without cats through an auto. These things work!
I hope to get to the track Friday, so we’ll see what it does.
First graph is final numbers, 2nd is before and after. Before being JLT proto type, tune and 3" cat back.
Not bad
Here's a weak video: http://www.youtube.com/watch?v=Kprbn1NrmoA

Gene K

Woohoo! Independent verification. Now if we could just get all the tuners to ship you a file for your intake.

tom281

Jay, thanks for the info.

So including the headers, what all mods does the car have to total the 415 mark?

Gene K

Not Jay but...

Prototype JLT Intake, Tune, 3" Dynomax Cat Back = 393 rwhp

Add ARH Headers and Catted X = 415 rwhp

22 rwhp gain peak to peak. 25 rwhp gain max.

FivePointO

Thats **** nice with a catted X-pipe. What would you say thats at the engine, 470hp?

tom281

Thanks Gene!

Tucker

Huh? We are doing our own tuning, but soon others will have the intake to make their own files.

And thanks for answering tom.

Gene K

It was a joke. I was talking about independent verification of some of those 40 rwhp tunes.

05-1947

Nice! Lets hear it befoe you put the stock mufflers back on.

Tucker

Got'cha. Yes, if someone claims 44-56 RWHP with nothing more then a CAI and tune, run, laugh or ask for a gaurantee
I'll try to do a drive by today or in car video, but OMG OMG it's loud.

Gene K

Your JLTII (Plastic) and Doug's (Bama) Mailorder Tune knocked off over 4/10 and added 3.5 mph to my 2007 (see signature). So I think the 27.9 rwhp on your site was pretty close on the 2005-2009 at least on my car.

Let us know how much power the stock mufflers cost (if any).

GRABOID

Just watched the vid and nice. I love the way the intake sounds like it could suck a small animal up off the side of the road LMAO. It really wasnt loud I thought. Maybe from the back of the car is much louder?

super6stang

The secondcoming of the 5.0 is no joke, I keep changing my rwhp goals, first I wanted 400 now I'm betting 420 is possible NA.

Freshmeat

You're an a-hole. So you know.

cdynaco

can't do that here. you need to edit that out before you get busted.

Freshmeat

What are you talking about??

(Thanks!)

cdynaco

todd03blown

Tucker is?

Freshmeat

Yes.

Tucker

What seems to be the problem Bub?
757 335 1940
Jay@JLTtruecoldair.com
133 Tilden Ave Unit C Chesapeake VA 23320


You know how to get ahold of me if you need to discuss anything.

Thanks
Jay