Jason Knowles

The car has already been decatted from the downpipe back with a TSL system and group N backbox.The car runs fine and sounds good.Im thinking of putting a Prodrive sports cat on now.Will the car run ok without a remap,i.e boost spikes,and will there be any increased performance to be gained.Thanks for potential replies JASON

BlackadderII

I wouldnt imagine it helping with a dirty great restriction in the way so i would say performance may suffer.

I'd possibly agree that it may need a tweak to compensate.

I think the sports cat dp is just a less restrictive Cat to get it passed emission laws. No cats are better

Butty

iTrader: (2)

Can't find the thread from early in the year, but seem to remember that Mike Wood indicated that they flow as a decat d/pipe - at least when new.
Can't see why spiking would happen or any xtra power, nor any need for a remap.
They are meant to last for min. 60,000 miles but there may be collapse of substrate with that mileage and will flow less.

Nick

MikeWood

Our 'sports cat' has a metallic substrate so can't collapse in the way that a ceramic cat may do. It also has a surface area of 4 x the original pipe size with less than 10% of the area taken by the substrate so just how is something with a minimum of 260% more effective cross-sectional area than the original open pipe and 150% more area than a 3" downpipe going to be restrictive?

Mike

Jason Knowles

A question for Mike,so is there a performance gain to be made fitting the Prodrive down pipe cat compared to the standard one on the car at the moment. JASON