Tucker
Active Member
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:coolman:.
Here's a weak video: [nomedia="http://www.youtube.com/watch?v=Kprbn1NrmoA"]YouTube- ARH HEADERS Gain 22-25 RWHP on 2011 GT 5.0[/nomedia]
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:coolman:.
Here's a weak video: [nomedia="http://www.youtube.com/watch?v=Kprbn1NrmoA"]YouTube- ARH HEADERS Gain 22-25 RWHP on 2011 GT 5.0[/nomedia]
