scott goodall

sti 2003 model with prodrive pack is it worth fitting a decat down pipe?is there more power to be had by doing this or just more noise! has anyone fitted this?

comments welcome.

thanks

Barnesy

Only worth doing if your going to have a remap after.

scott goodall

what would you expect after re map and what would you think it would cost to map.

nice looking motor by the way!

Blue by You

iTrader: (23)

I've just gone back to a PPP zorst with a sports cat from a full decat system with wrapped headers.
Prior to the change the motor was dyno'd at 340 bhp.
After the changeover the car was re-mapped & dyno'd at Zen at 336 bhp with about 20ft/lbs of torque lost as well.
It doesn't seem like a lot to gain for the outlay on a decat downpiep, and it does depend on your set up.
The upside is that the car is legal and a little quieter.




But I'm hanging on to the decat system

Turbotits

iTrader: (2)

With a full decat and map your looking at 330 ish bhp. Well worth the extra drivability over the ppp. ecuteckremaps are a bit dearer for the first one as the lisence has to be paid for around £600 is probably an average price.

Barnesy

With a full decat and remap I was running 330bhp and 350lbft.
Sell the prodrive system and get a full decat, you know you want to.