What's new

Cat-Back exhaust ???

Yep, familiar but do not think 10-20 hp is a "huge" difference so was curious on the comment. The step up from OEM DP to aftermarket across just about all platforms are in the range you quoted but my thought for "huge" would by a 30+ up bump.
I guess it is hard to Quantity an opinion, so I understand where you're coming from. But I'll defend my statement and you can judge for yourself if it's "huge."

First, as previously stated, it will be the biggest bolt on performance upgrade and with a tune can produce 25+ hp; but we'll stay in the 10-20 ballpark to be safe. Dont forget, it's not just the hp but similar numbers for torque as well.

Second, a downpipe in turbo vehicles bolt directly to the turbos. So, they are the biggest possible helper for back pressure, the closer that back-pressure is to the turbos the worse it is for your performance (And if you're already tuned you're already creating more back-pressure). Along with this, reduced back-pressure will mean a faster turbo spool and thus more power quicker.

Lastly is sound. It means very little to some of us and a lot to others, but downpipes will play a pretty significant role in the sound of your truck, especially combined with the cat-back.

All of these things together is why i said it will be a "huge" difference. There are few, if any at all (none that I can think of) that offer so much for a vehicle in a bolt on package and for the cost. CvFab, the same ones who make the IC, will also have downpipes this year and previous gens were around $750 which with a general code is 712 to your door.

TLDR
Everything combined is a huge deal.
  • 10-25+ hp AND torque
  • back-pressure relief
  • faster turbo spool
  • exhaust sound
  • performance/price
 
I guess it is hard to Quantity an opinion, so I understand where you're coming from. But I'll defend my statement and you can judge for yourself if it's "huge."

First, as previously stated, it will be the biggest bolt on performance upgrade and with a tune can produce 25+ hp; but we'll stay in the 10-20 ballpark to be safe. Dont forget, it's not just the hp but similar numbers for torque as well.

Second, a downpipe in turbo vehicles bolt directly to the turbos. So, they are the biggest possible helper for back pressure, the closer that back-pressure is to the turbos the worse it is for your performance (And if you're already tuned you're already creating more back-pressure). Along with this, reduced back-pressure will mean a faster turbo spool and thus more power quicker.

Lastly is sound. It means very little to some of us and a lot to others, but downpipes will play a pretty significant role in the sound of your truck, especially combined with the cat-back.

All of these things together is why i said it will be a "huge" difference. There are few, if any at all (none that I can think of) that offer so much for a vehicle in a bolt on package and for the cost. CvFab, the same ones who make the IC, will also have downpipes this year and previous gens were around $750 which with a general code is 712 to your door.

TLDR
Everything combined is a huge deal.
  • 10-25+ hp AND torque
  • back-pressure relief
  • faster turbo spool
  • exhaust sound
  • performance/price
No.need to defend your statement, I was curious if you had reports/evidence of significant gains. I am familiar with turbo applications and DP as I had a heavily modified turbo mk7 prior to the Tremor. I would like to hear the sound of the DP and hope the ones to be released are no cell guarantee as annual state inspections kinda suck here in NC and I am done dealing with that fiasco.
 
No.need to defend your statement, I was curious if you had reports/evidence of significant gains. I am familiar with turbo applications and DP as I had a heavily modified turbo mk7 prior to the Tremor. I would like to hear the sound of the DP and hope the ones to be released are no cell guarantee as annual state inspections kinda suck here in NC and I am done dealing with that fiasco.
I 100% agree. I've reached out to all the ones ive know are dropping a dp and will let you know what they say as they come. Below are the 2 response to me though; the first from spd, and the second from cvfab.

As far as numbers and such from my above statement, I have no tangible data as this 3rd gen 3.5 hasn't had the aftermarket support yet. I am basing is off of last gen 3.5 numbers etc.

Screenshot_20230723_134637_Instagram.webp
Screenshot_20230723_085942_Instagram.jpg
 
Last edited:
Yep, familiar but do not think 10-20 hp is a "huge" difference so was curious on the comment. The step up from OEM DP to aftermarket across just about all platforms are in the range you quoted but my thought for "huge" would by a 30+ up bump.
If you have a tune and do the downpipes all the way back to tailpipes, I could see getting 30ish of a bump. I don't think it's outside the realm of possibility.
 
For anyone still looking, or that doesn't like what's currently out, I heard back from AWE and they are working on a tremor exhaust as well.
Screenshot_20230725_114450_Instagram.webp
 
For any of the weirdos that got a 5.0 and are in CA.
 

Attachments

  • Screenshot_20230801_180153_Instagram.webp
    Screenshot_20230801_180153_Instagram.webp
    81.1 KB · Views: 70
I'd like to see a downpipe/midpipe setup with equal length. Debating trying to find an updated Raptor setup with the trombone but not sure if I like the diameter/bends (more up by the cats than the catback)
 
I'd like to see a downpipe/midpipe setup with equal length. Debating trying to find an updated Raptor setup with the trombone but not sure if I like the diameter/bends (more up by the cats than the catback)
SPD performance has a raptor version that they are making an f150 conversion for. Not done yet, but soon hopefully.
 
Definitely curious how they’d pull it off. We Y at the DP and run single all the way back to the axle where the Raptor is dual DP to the dual mid pipe. Slapping a 1-2 mid pipe on ours might not make much of a difference so I’d imagine it’d have to be a turbo back/cut/front half replacement.
 
Last edited:
Definitely curious how they’d pull it off. We Y at the DP and run single all the way back to the axle where the Raptor is dual DP to the dual mid pipe. Slapping a 1-2 mid pipe on ours might not make much of a difference so I’d imagine it’d have to be a turbo back/cut/front half replacement.
I'm eagerly waiting for SPD to release it to complete my exhaust. I can only hope they add the turbo back and do a downpipe down each side.
 

Attachments

  • Screenshot_20230918_201709_Instagram.webp
    Screenshot_20230918_201709_Instagram.webp
    63.4 KB · Views: 55
Will report back, just ordered the ATAK with the black tips. The borla manager I've been talking to for over a year gave me a killer discount, shout out to them! Should be installed in a few weeks.
Did you ever get this installed? I'm curious how you like it. I had the atak on my Lariat and it was a little too shrill in high RPM's for my liking. I got the mid section Type S on my tremor and i like the way it sounds quite a bit more.

It's pretty tough to distinguish the sounds of the atak vs type s in any video you watch if you ask me...
 

Recent Discussions

Back
Top