1993 possible buy
#1
#2
#3
The manifold needs to match the exhaust system; it's not a "Swap just the manifold" type upgrade.
Check the injectors; somewhere in there they changed the injector flow. Not a big problem; keep the ECU with the injectors and you're still good (so it uses the proper tables). I THINK they went with BIGGER ones in 1994; BICBW.
(And it's not that much bigger; it's within the auto-correct range for the ECU, but it takes out your adjustment for running changes.)
RwP
Check the injectors; somewhere in there they changed the injector flow. Not a big problem; keep the ECU with the injectors and you're still good (so it uses the proper tables). I THINK they went with BIGGER ones in 1994; BICBW.
(And it's not that much bigger; it's within the auto-correct range for the ECU, but it takes out your adjustment for running changes.)
RwP
#6
Yep.
Of course, if you move the whole exhaust system over, then the problem is solved.
Hence my comment - it's not just "swap the manifold", it's "swap the manifold and the entire exhaust system".
And I'd swap the manifolds, and either swap the exhaust or have a new exhaust system made, if it were me.
RwP
Of course, if you move the whole exhaust system over, then the problem is solved.
Hence my comment - it's not just "swap the manifold", it's "swap the manifold and the entire exhaust system".
And I'd swap the manifolds, and either swap the exhaust or have a new exhaust system made, if it were me.
RwP
#7
I got the larger exhaust on Rock Auto using my 94 as the search parameter, made by Walker. It is direct fit, from the Y back including CAT it was less than $400 delivered. You may need a couple extra u bolt clamps. It improved things and I never changed the 94 manifold. I wonder what it would do if I went with the 93 manifold assuming I also got a new Y pipe?
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#8
The complete exhaust was a bit larger in 1993 all the way to the back; you'd have to have a reducer in there, and that reduces (also!) the benefit of the larger exhaust.
I'd look hard at the whole thing.
GOOD news - you don't have to buy it all at one time! You can store the parts and just swap them on the designated day *grins*
RwP
I'd look hard at the whole thing.
GOOD news - you don't have to buy it all at one time! You can store the parts and just swap them on the designated day *grins*
RwP
#9
#10
The '92/'93 Y mated right up to the larger '92 exhaust manifolds, and the outlet was 3 inches O.D. I used a 3" pipe from the Y to a 3 inch in/out Magnaflow Cat. The Cat dumps straight into a 3 inch in/out Hush Thrush muffler, which is then reduced down to 2 3/4", and exits through the same Walker 2 3/4" tailpipe that onemore94dak referred to.
If you look on RockAuto, there is an option for a performance exhaust system (WALKER 17443 Dynomax Super Turbo Single System), which is the larger Walker Cat-back pieces. I just checked and it's currently showing "out of stock".