I was very busy today modding the new stang. I added an OE Boss Rear Diffuser, FRPP Boss H-pipe with side pipes, and Magnaflow Street Series Axle-Back. The new exhaust sounds amazing! Below are notes and photos of everything done.

Before rear view


Rear wheels, tail lights and rear bumper cover removed


Trimming off portion of bumper cover. There are lines inside the cover showing where to cut :thumbsup:


First drill where slots need to be cut - two slots at each exhaust outlet


Cut remainder of slot with coping saw


Trimming/Cutting all done




Diffuser installed on bumper cover


All tabs snapped into place, plus 6 white clips pressed into place


One exhaust outlet showing where two tabs snap into freshly cut slots


Completed look




Original h-pipe


New Boss h-pipe with side pipes (restrictor plates removed)

 

Nice! really like the look of the diffuser. Post up a sound clip if you can.

 

Wow. I wouldn't be able to keep from driving my car. Sounds like some great mods! Pun intended

 

Very nicely done! Thanks for the photo documentary.

 

What was the part number for the rear diffuser? I've seen two different numbers DR3Z-17F828-AA and DR3Z-17F828-BA. The second one is listed on ford accessories and says no drlling/cutting required. My only guess is the first one is the replacement part for the Boss/Cali Special while the second one is a retrofit kit. Can anyone confirm that?

 

The part number was DR3Z-17F828-AA Bumper – Extension (a/k/a 2013 Boss 302 Diffuser). The 2nd one you listed is likely the one for the 2013 GT500. If you don't already have a Boss, GT/CS or GT500 bumper cover, then you WILL need to do the cutting.

 

very nice...that makes two of us that was busy this weekend. I ended up installing the shelby rear diffuser and quad exhaust.

 

Where did you get your quad exhaust? Thats next on my list for sure.

 

Thanks! Installing the Shelby unit is similar, only you had to cut more slots in the center area...more fun!. I got both the diffuser and Boss H-pipe with side pipes (M-5220-MB kit) from Tousley Ford, the latter costing me about $685 shipped.

 

Your car is absolutely amazing SoFlaBoss. I love it that's for sure.

Thank you for sharing.-------Bill

 

Yea it took me longer than I thought...but it doesn't help that I have mickey mouse tools...lol. Its definitely not something I would want to do on a regular basis. Thanks for the price info!!

 

Great work!

 

Looks awesome. Kinda now wish I hadn't been so impatient when I got mine and installed it. basically i cut off the tabs around the tips and got a little creative. at some point I'll probably try to get another boss diffuser and do it the right way.

 

Thanks!

I'm sure no one has noticed your missing or broken tabs, lol. But it would bother me too! Thanks!

 

Boss great job on the install and pics. I will be installing the same diffuser as well as soon as my car arrives. Didn't expect so much cutting was required. Is the bumper cover marked inside where to remove material?

 

Nice write up! I did the RTR diffuser on my '11. That was a walk in the park compared to what you had to do. :good:

 

Yes, it's clearly marked where to cut on the inside of the cover. Thanks!

Also, below are photos of the only extra hardware you should need for the install.

A speed nut and screw like pictured for each exhaust outlet. I could never locate the part numbers for these. However, my local Ford Parts Dept. had these on hand that worked perfect.


Six of these small white clips for securing the tabs across the center area that aren't self-securing.


Two of these clips for the bottom center support, as you can't remove the original ones without destroying them.

 

diffuser makes a big difference. looks great!

 

This

 

Thanks. I picked up the hardware at a local dealer. Looks like all the same fasteners and clips.

I'll be sure to tell my wife that doing all the cutting and bringing the bumper cover into the family room
is just part of doing things properly.
I haven't told her yet about having to cut anything on my new $40 k car.
Lol