burt2000

iTrader: (1)

looking to change the loud jap system on the car im buying and would like something quieter as per title, its for a 1995 WRX, cheers

Will need posted to N.Ireland

allsop83

iTrader: (9)

I have got a nearly new Hayward and Scott system in the garage for sale. Looks the part and is very compliant whilst pootling and opens up nicely when you want to open the taps

PM if interested.

Scott@ScoobySpares

iTrader: (64)

We have a magnex oval back box here for £90

Scott..

burt2000

iTrader: (1)

bump

jaygsi

iTrader: (46)

Hi bud i did message you about my magnex but no responce

burt2000

iTrader: (1)

sorry mate i must have forgot to get back to you, its def a magnex yeah? how much are ya looking for it

jaygsi

iTrader: (46)

Yes its Magnex, but its 3" bore exhaust all way threw, adds more power, i've been in 2 minds if to fit or not, is your down pipe 3" bore or 2.5"?

burt2000

iTrader: (1)

Yeah 2.5 downpipe unfortunately

allsop83

iTrader: (9)

3" doesn't add more power so I would not fit it unless you are running more than 400bhp, that is an average change up point from 2.5" to 3" as you need a greater volume to release the gasses.

burt2000

iTrader: (1)

yeah i want to keep a 2.5" system as im not going for that much more power and also want to keep the noise down.

jaygsi

iTrader: (46)

Well i fitted a 3" system to mine and you could straight away feel the difference and i'm not running any where near 400 bhp

I got more power across the rev range

allsop83

iTrader: (9)

It may feel like it but I would doubt it unless back to back maps show it

jaygsi

iTrader: (46)

Have you fitted a 3" system to your Impreza with no other mods?

I have and the difference was very noticeable, i'm not going to pluck numbers out of the sky, but it did improve power

allsop83

iTrader: (9)

Not my impreza no but a friends yes, P1 running just a remap so 320/330bhp - fitted the 3 inch and it made delivery worse. The difference was noticeable.

If anything this shows us everyone has difference experiences I guess.

jaygsi

iTrader: (46)

There you go, its been remapped for 2.5"?

On a standard Impreza with no mods it improved performance for me, complete system not just cat back

burt2000

iTrader: (1)

bump still after a prodrive or magnex system

Dave uk blue mica

I had a 3" japspeed system on my impreza and swapped that for a 2.5" prodrive system and made no difference to the power of the car or how it drives on the road but is just loads quieter now with the prodrive exhaust