powerwrx

iTrader: (11)

hi all,

are there any noticeable gains from fitting a decat up pipe ie power,sound etc

daz1968

iTrader: (13)

I fitted mine a couple of weeks ago with a prodrive downpipe, can honestly say it doesn't seem any louder, turbo spools a little better, but hoping a remap will give better gains.

powerwrx

iTrader: (11)

thanks for that, if i fit one then ill be getting it mapped again too

powerwrx

iTrader: (11)

any more input

IainMilford

iTrader: (15)

A decat uppipe will help the turbo to spool up quicker, when Bob Rawle mapped my car he was impressed with how well the turbo held boost at high revs and said that was down to the decat uppipe. It also removes the risk of your turbo becoming f**ked when the cat fails and falls into the turbo

powerwrx

iTrader: (11)

thanks for that mate

eggy790

iTrader: (20)

sorry to bump up an old thread, does anyone have a pic of a standard classic subaru up pilpe on a version5 / 6?

and one that has been changed? never really heard of them being changed on classics.. just turbo back exhausts..

not sure i undertsand correclty what the up pipe is or if ive misunderstood the term

Norman Dog

iTrader: (1)

Turbo spools up quicker and gives better acceleration even before remapping, not any louder but gives a nice induction sound.

I ran mine for 4 months before remapping with just a Prodrive Sports Cat, other than a couple of CEL's (Cat below efficiency) no other issues at all.

IainMilford

iTrader: (15)

Uppipe goes from the engine UP to the turbo, then you get the downpipe etc after the turbo. STi's come with a decat uppipe, newage WRX's uppipe come with a cat in, not sure about classics.

hope that helps

eggy790

iTrader: (20)

ahh right now i get you

havnt ever touched that on any of my cars, do classic stis come with any restriction in them?