bandyandstrange

how loud should a magnex system with decat pipe with resonator should be mine seems to get louder when its warm its brand new and just fitted it this morning looks great but very noisy i would hate to think how loud it would be without a resonator

mark

symons wrx

looking for a back box for the scoob any ideas of where to get a good but not to loud i now this has been done before all opions good and bad accepted

thanx sy

hades

I have collected some data for exhaust noise - some measured myself, some from a couple of people in the states who have measured things. None of the systems I have data for are anywhere near as quiet as the standard system on a MY01-02, which to be honest is inaudible (from the backbox) from inside the car.

Quiet backboxes - prodrive, MRT, APS, plus one or two of the american systems. The Magnex backbox was about 5 dB louder than the prodrive at 5000rpm on an identical full de-cat; Magnex is very much "mid pack" noise wise. Blitz and HKS are a lot louder still, typically another 5-10dB.

I've got a full APS sports cat system, similar volume to a prodrive (i.e. signifcantly quieter than Magnex), and think it's great. However, some non enthusiasts have commented that they think mine is a loud exhaust, so I don't doubt you'll find the Magnex loud, especially comparing with "normal" cars.

Oddly, I found the opposite re:temperature - mine gets quieter when it warms up.

scooby_si

Out of interest dont suppose uve got a DB increase on the blitz with silencer in do ya as while i note it is mildly deeper when i've conpared it 2 a standard box on idle it's not noticibly noisier Just wondered as neighbours still luv a moan but i reckon they just have it in their heads it's much louder since i made every1's ears bleed without the silencer for the 1st few weeks
Si

JamieMacdonald

I think my Magnex is really quiet compared to other ones I've heard, and that's fully decatted!
Actually looking to get rid of the resonator to liven it up a bit.

Symonds, you're welcome to have a listen to mine if you want, as I'm near Pompey too.

J

scooby_si

I came down 2 pompey 2 buy my car just over a year ago but it woz in a standard state so u woodn't of herd it
Besides it's had a saints (uh oh saints fan vs pompey flame war? ) style rebirth as a noisy son a bytch
Si

JamieMacdonald

Who are Saints? Oh, you mean the Sc*m!

It'll be a dream come true to do the double over ya in the Premiership next year!!

scooby_si

LMAO ave u bin smokin that crak again lol
Si
PS any zaust is better than standard show me da burble (just 2 stay on thread detail kinda thing

Scooby50WRX

My Magnex backbox fitted on a line with sport cat downpipe has a "broad noise" as I was searching for, quiet at low rpm, typically the boxer sound we like after 4000rpm.
A bit noisy on hihgways at around from 160-170 km/h.
Fitted on a STI7.

P.S. The quality is really top.