OEM catalytic converters or Hi-flow?
 

I've sourced an OEM y-pipe/cats for 370 new and am curious if I should just go with that, or if there is a good enough benefit to spending the same getting the magnaflows and having them welded in?

I figure the OEM will be nice to just unbolt and replace, but if it's really worth it I'll do the hi-flows.

My OEM cats are at 104K and stink. "Gotta go" time for those guys. :)

RE: OEM catalytic converters or Hi-flow?
 

You wont net any more horse power buy using the highflow cats.

RE: OEM catalytic converters or Hi-flow?
 

Spike,

Thanks for the reply. I didn't think there was much to do for HP anyway, but figured I'd ask. cheers!

Justin

RE: OEM catalytic converters or Hi-flow?
 

I wasnt sure if you were trying to go for HP or not, thats why most people go for hi-flow exhaust, works on most cars, but not Rovers.
But if they are the same price...but then the bolt on and off has its pro's too.

RE: OEM catalytic converters or Hi-flow?
 

You would have to get your ECM remapped (chipped) for high flow catalytic converters or headers to show much improvement in mileage or power.