decat pipe

[wolfie1]

ok so i have been told my 94 fd is suffering with boost cut so am buying an apexi ecu for it and have decided to also fit a decat pipe at the same time, so my questions are- are the decat pipes really noisy would i be better off with a silenced 1, (i have an apexi back box on at the moment) and there is a pipe that comes off the cat that goes back towards the engine, i am presuming its an egr system? what happens with that pipe when getting rid of the cat?
thanks

[m1tch]

That pipe will be from the air pump - its part of the emissions and also helps stop the cat imploding from the heat from a rotary lol

A decat pipe will make it a bit noisier yes, but a rotary isn\'t the quietest of cars, what sort of apexi box do you have?

[wolfie1]

it was on the car when i bought it, it has an adaptive piston thing in the tail pipe to control the exhaust noise, so what do i do with the pipe then?

[fil_auto]

Wolfie, may I suggest this for you?! Tis sat in my garage begging for a new home

http://www.mazdarotaryclub.com/forums/showpost.php?p=746266&postcount=2

[wolfie1]

thanks but i have already bought 1

[fil_auto]

No probs