Official 4.6L long tubes thread

the prototypes are done. The baseline dyno pulls are being done this afternoon. Headers should be installed over The Weekend. Will be taking orders when figment is confirmed. Call for details. 760-877-4234

 

How tough is the install?

 

do they sit lower than oem ?

 

Cannot wait for the install and dyno. Been waiting for these for so long.

 

Quote me on a full exhaust system with 8" muffler and I'm sure I'll be like the top ten people who put in for this.

 

nobody's done it yet. I know shorties on a 4.6 is gnarly. The long tubes should be about the same as a 5.7, and that's about a 8 hour job.

 

should follow the same path as oem, just takes up more space.

 

sending right now.

 

Baseline dyno was pushed out guys. Hold tight. I'll update right when I hear anything.

 

Update?

 

Gained 30 hp. 30 tq to the rear wheels.

Sorry guys. Been slammed. I need to update with a dyno sheet.

These are good to go.

 

Wow 30 HP? Shit, this might be my next mod. Thoughts on combining these with the TRD exhaust Keith? Maybe closer to 40?

 

The figures are based on a dual exhaust. You will see 30 hp no matter what brand as long as it's true duals.

 

Joe, dooo iittt!

 

How much of a pain in the ass was getting to these? I don't have small hands

 

Its a tight fit for sure. Was like 9 hours from start to finish but its doable. Biggest pain is the header bolts since you can't see most of them. Its all by feel

 

Following

 

Do they come with a CARB stamp? Lol

 

Currently have a 2015 with the 4.6l and stock headers and exhaust. Please quote me for the longs and a dual exhaust set up you recommend for a moderate sound. I want a nice growl when I Rev the engine but I don't want highway drone. Your help is appreciated

 

Hello,

Give Keith Carty of Dirty Deeds Industries a call at 760-877-4234. He can get you all set up with the perfect system.

Thanks, Shawna, DDI

 

Couldn’t help but notice the o2 sensor holes but without cats what’s the point of even having them… will defoulers keep the CEL off