Speed Engineering Y-pipe improvement
Speed Engineering Y-pipe improvement I have the SE 3" stainless y-pipe. My exhaust is leaking a little bit and I'm going to take it down and re-clamp it. Yes, I have the nice wide clamps for 3" exhaust. So this is what I want to know:
I will never go to true duals, as I'm not a fan of obnoxiously loud exhaust. What's the best way to improve the performance of this y-pipe? I've seen threads mention merges and 4" etc... so what's the best way to make it better? I will add a cutout eventually but I won't want that open all the time.
I will never go to true duals, as I'm not a fan of obnoxiously loud exhaust. What's the best way to improve the performance of this y-pipe? I've seen threads mention merges and 4" etc... so what's the best way to make it better? I will add a cutout eventually but I won't want that open all the time.
TECH Enthusiast
Joined: Feb 2018
Posts: 640
Likes: 297
From: Michigan
I went with the Flowmaster 4" merge to a 4" cutout and then stepped it down to 3" before before it goes over the axle to my Magnaflow muffler. My only complaint is that the 4" cutout doesn't seal as well as the 3" did. I'll see if I can snap some pictures of it if you want me to.
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I went with the Flowmaster 4" merge to a 4" cutout and then stepped it down to 3" before before it goes over the axle to my Magnaflow muffler. My only complaint is that the 4" cutout doesn't seal as well as the 3" did. I'll see if I can snap some pictures of it if you want me to.
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TECH Enthusiast
Joined: Feb 2018
Posts: 640
Likes: 297
From: Michigan
It's not completely done, I have a couple things I want to change on it. I want to add a slip fit part to the cutout Y so I can eliminate the crappy butt joint style clamp, as you can see I used a part of a pop can to help it seal since no ones makes a proper sealing butt joint clamp for 4" exhaust. I also want to eliminate the lap joint clamps connecting the Flowmaster merge to each bank of cylinders but welding them together.
I made the turn down out of a mandrel bent U from Summit, and welded it to the cover that came with the cutout Y pipe, which I cut a 4" hole in.
If you have any questions let me know.
Last edited by Bob570; May 2, 2021 at 02:37 PM.