New Mods - Boss Diffuser, Boss H-pipe & Axle-back
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New Mods - Boss Diffuser, Boss H-pipe & Axle-back
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
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Rear wheels, tail lights and rear bumper cover removed
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Trimming off portion of bumper cover. There are lines inside the cover showing where to cut :thumbsup:
![Name: IMG_8148.jpg
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Size: 136.9 KB](https://themustangsource.com/forums/attachments/f802/204362d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8148.jpg)
First drill where slots need to be cut - two slots at each exhaust outlet
![Name: IMG_8152.jpg
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Size: 90.1 KB](https://themustangsource.com/forums/attachments/f802/204363d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8152.jpg)
Cut remainder of slot with coping saw
![Name: IMG_8155.jpg
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Size: 107.9 KB](https://themustangsource.com/forums/attachments/f802/204364d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8155.jpg)
Trimming/Cutting all done
![Name: IMG_8157.jpg
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Size: 61.0 KB](https://themustangsource.com/forums/attachments/f802/204365d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8157.jpg)
![Name: IMG_8158.jpg
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Size: 58.1 KB](https://themustangsource.com/forums/attachments/f802/204366d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8158.jpg)
Diffuser installed on bumper cover
![Name: IMG_8172.jpg
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Size: 85.6 KB](https://themustangsource.com/forums/attachments/f802/204367d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8172.jpg)
All tabs snapped into place, plus 6 white clips pressed into place
![Name: IMG_8169.jpg
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Size: 117.9 KB](https://themustangsource.com/forums/attachments/f802/204368d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8169.jpg)
One exhaust outlet showing where two tabs snap into freshly cut slots
![Name: IMG_8170.jpg
Views: 241
Size: 157.4 KB](https://themustangsource.com/forums/attachments/f802/204369d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8170.jpg)
Completed look
![Name: IMG_8177.jpg
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Size: 102.4 KB](https://themustangsource.com/forums/attachments/f802/204370d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8177.jpg)
![Name: IMG_8179.jpg
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Size: 93.9 KB](https://themustangsource.com/forums/attachments/f802/204371d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8179.jpg)
Original h-pipe
![Name: IMG_8174.jpg
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Size: 158.8 KB](https://themustangsource.com/forums/attachments/f802/204372d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8174.jpg)
New Boss h-pipe with side pipes (restrictor plates removed)
Before rear view
![Name: IMG_8138.jpg
Views: 251
Size: 115.9 KB](https://themustangsource.com/forums/attachments/f802/204360d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8138.jpg)
Rear wheels, tail lights and rear bumper cover removed
![Name: IMG_8173.jpg
Views: 246
Size: 111.9 KB](https://themustangsource.com/forums/attachments/f802/204361d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8173.jpg)
Trimming off portion of bumper cover. There are lines inside the cover showing where to cut :thumbsup:
![Name: IMG_8148.jpg
Views: 252
Size: 136.9 KB](https://themustangsource.com/forums/attachments/f802/204362d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8148.jpg)
First drill where slots need to be cut - two slots at each exhaust outlet
![Name: IMG_8152.jpg
Views: 248
Size: 90.1 KB](https://themustangsource.com/forums/attachments/f802/204363d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8152.jpg)
Cut remainder of slot with coping saw
![Name: IMG_8155.jpg
Views: 224
Size: 107.9 KB](https://themustangsource.com/forums/attachments/f802/204364d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8155.jpg)
Trimming/Cutting all done
![Name: IMG_8157.jpg
Views: 236
Size: 61.0 KB](https://themustangsource.com/forums/attachments/f802/204365d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8157.jpg)
![Name: IMG_8158.jpg
Views: 214
Size: 58.1 KB](https://themustangsource.com/forums/attachments/f802/204366d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8158.jpg)
Diffuser installed on bumper cover
![Name: IMG_8172.jpg
Views: 247
Size: 85.6 KB](https://themustangsource.com/forums/attachments/f802/204367d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8172.jpg)
All tabs snapped into place, plus 6 white clips pressed into place
![Name: IMG_8169.jpg
Views: 271
Size: 117.9 KB](https://themustangsource.com/forums/attachments/f802/204368d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8169.jpg)
One exhaust outlet showing where two tabs snap into freshly cut slots
![Name: IMG_8170.jpg
Views: 241
Size: 157.4 KB](https://themustangsource.com/forums/attachments/f802/204369d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8170.jpg)
Completed look
![Name: IMG_8177.jpg
Views: 245
Size: 102.4 KB](https://themustangsource.com/forums/attachments/f802/204370d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8177.jpg)
![Name: IMG_8179.jpg
Views: 231
Size: 93.9 KB](https://themustangsource.com/forums/attachments/f802/204371d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8179.jpg)
Original h-pipe
![Name: IMG_8174.jpg
Views: 216
Size: 158.8 KB](https://themustangsource.com/forums/attachments/f802/204372d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8174.jpg)
New Boss h-pipe with side pipes (restrictor plates removed)
![Name: IMG_8180.jpg
Views: 250
Size: 161.3 KB](https://themustangsource.com/forums/attachments/f802/204373d1501527097-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8180.jpg)
#5
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?
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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?
Last edited by SoFlaBoss; 11/18/12 at 07:44 PM.
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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!!
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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.
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Thanks!
I'm sure no one has noticed your missing or broken tabs, lol. But it would bother me too! Thanks!
I'm sure no one has noticed your missing or broken tabs, lol. But it would bother me too! Thanks!
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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?
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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.
![Name: IMG_8160.jpg
Views: 235
Size: 171.3 KB](https://themustangsource.com/forums/attachments/f802/204337d1501526994-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8160.jpg)
Six of these small white clips for securing the tabs across the center area that aren't self-securing.
![Name: IMG_8167.jpg
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Size: 160.3 KB](https://themustangsource.com/forums/attachments/f802/204338d1501526994-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8167.jpg)
Two of these clips for the bottom center support, as you can't remove the original ones without destroying them.
![Name: IMG_8171.jpg
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Size: 171.0 KB](https://themustangsource.com/forums/attachments/f802/204339d1501526994-new-mods-boss-diffuser-boss-h-pipe-axle-back-img_8171.jpg)
Last edited by SoFlaBoss; 11/19/12 at 08:40 PM.
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Originally Posted by SoFlaBoss
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.
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