Catback Exhaust plus X-Pipe?

[WVZR-1]

Originally Posted by NVMYRC51

Hey on second thought, what if I was to go ahead and delete the Cats now? Stock manifolds with cats deleted? Reflash the chip? More importantly is there any benefit powerwise without the headers?

On your '90 the manifolds and the "cats" are an assembly on each side. You can't eliminate the "cat" without doing something to replace the manifold also. It's not cost effective to use the '93+ manifolds and "cats" then later do the headers and eliminate the "cats". You might as well just do it "once" and settle all of the fitment issues, the tune etc. You'll end up much happier and I'd think it also cost effective to just do it "once" and be done. There's much less of a chance of fitment issues also.