banjogt

Guys, anyone got a video of the ninja system onboard? I've running a standard 2002 wrx with a racebox backbox only. Finding it a little too quiet after being in for a few months... was thinking about de resonated centre or mayby a ninja 2 back box? Any advise?

Vxr2010

try youtube i'm sure there is something on there , try removing mid silencer it's makes a fair bit of difference , hayward and scott for about 130£ , there are two different lengths

The Trooper 1815

iTrader: (31)

I have had both.

De-resonate and the noise changes considerably

banjogt

So you think I should stick with the race box and de resonated? Get a bit more volume that way?

jaygsi

iTrader: (46)

Yes Ninja might have cabin drone.

mattwrxCS

iTrader: (1)

I've got a Ninja2 on my WRX Wagon and it's not that loud or drones. I still had the up pipe cat, primary cat and centre resonator in place until yesterday, so that will help to keep it quite.

Richy P1984

The ninja does have cabin drone - especially over 60mph

I've a de-res centre pipe and back box, and yes it produces a lovely burble on tick over and low revs, boot it and there's a nice raw, but sit at anything over 2.5 - 3k and the drone starts.

Vxr2010

a question linked to this , can you have too little restriction on a turbo exhaust system , if you have too less restriction on a n/a engine they sound loud but don't run well , is that the same with a turbo ?

The Trooper 1815

iTrader: (31)

Yes.

Loud is not everything, just an obsession of people who seek attention in McD carparks.

And before all the "brain like a planet" types start spouting about race cars etc, they have specific engineering tech to account for the lack of restricted exhausts, not many traffic light hero/tunnel runners do.

banjogt

I was thinking that about the ninja system, had one one a classic a few years ago and can seem to remember it gave a bit of a drone

RussStiTypeuk

Nur Spec R all the way boom....

The Trooper 1815

iTrader: (31)

My UK Classics and JDM STi V5 had the Ninja and Ninja 2, WRX RA had a full Fujisubo Titanium sytem, my JDM Blob WRX and Foggy STI 3" Milltek Turbo back with sport cat - nice , my first Leggy WR Ltd had STI Genomo's, both UK Bugs were WR Sport set ups.

Vxr2010

so are we saying too little restriction is not good , when i removed the centre pipe it helped , the current one has a sports cat , deleted centre section and a normal sports back box , maybe too much restriction removed ?

The Trooper 1815

iTrader: (31)

No.

The cat is still providing some resistance as will the bends in the pipework and the back box.