Originally posted by wavrdr:
but my question is do you think going from an off road y to the full header setup will yeild gains worth $600 + the 6 hrs. it's gonna take me to install them?
Damn I sure hope so. I just did that a couple months ago...
Execept it only took me around 3.5 hours... :p
Seriously though; You are going to want to either gut the precats or go headers anyway since they are such a big restriction.
Also since I've had the precats off and dissected them; I see there is no way, even gutted, they are any where near as efficient as the short tube MSDS headers.
Are they worth the money? Probably, though they are a bit over priced (small market will do that

)
Are they worth the labor? Easily. You'd have to do it anyway (and more) to gut the precats.