Best Y-Pipe for 88 TPI Manifolds?
Thread Starter
Joined: May 2012
Posts: 141
Likes: 13
From: Salt Lake City, UT
Engine: 5.7!
Best Y-Pipe for 88 TPI Manifolds?
I'm looking for single cat y-pipe options to be used with the factory L98 TPI Manifolds on an 88 GTA.
Currently I've found:
Walker 40439, looks to be the most "factory" and cheapest.
Magnaflow 16450, seems to be a better design, double the price of the Walker.
(Are there any other options?)
This is for a 100% street car, so max HP isn't required - Mostly looking for what will work best fitment-wise, I do have the metal spacer that the TPI cars had for the passenger side manifold, but that may not be required with either? I'm not sure.
Currently I've found:
Walker 40439, looks to be the most "factory" and cheapest.
Magnaflow 16450, seems to be a better design, double the price of the Walker.
(Are there any other options?)
This is for a 100% street car, so max HP isn't required - Mostly looking for what will work best fitment-wise, I do have the metal spacer that the TPI cars had for the passenger side manifold, but that may not be required with either? I'm not sure.
Thread Starter
Joined: May 2012
Posts: 141
Likes: 13
From: Salt Lake City, UT
Engine: 5.7!
Joined: Apr 2017
Posts: 1,149
Likes: 445
From: Northern NY
Car: 1988 Trans Am GTA and 1979 Trans Am
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: Borg Warner 9 bolt 3.27
Re: Best Y-Pipe for 88 TPI Manifolds?
I have the magnaflow, it’s a nice quality piece and definitely better than factory.
Thread Starter
Joined: May 2012
Posts: 141
Likes: 13
From: Salt Lake City, UT
Engine: 5.7!
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