Back Box for a convertible

[DaveGT]

Hello all

I just fitted a back box to my Cabby and it's far to loud for my liking, which performance box has a sporty tone when you want it but sounds quiet at a stand still.

Advice needed as i'll be deaf in a week if this thing doesn't come off!

[Ziggy]

Supersprint.

[snoops]

Hello all

I just fitted a back box to my Cabby and it's far to loud for my liking, would performance box has a posrty tone when you want it but sounds quiet when at at stand still.

Advice needed as i'll be deaf in a week if this thing doesn't come off!

are you going to sell the back box then, if you do ill take first dibs!

[DaveGT]

Yep will be selling the box once i find a replacement

[cliffybabe]

what make exhuast did u fit, I have a scorpion on mine and it sounds wicked

[DaveGT]

It's a twin exit universal jobbie, looks great was easy to fit but it's far to load, anyone tried "power flow"

[cliffybabe]

It's a twin exit universal jobbie, looks great was easy to fit but it's far to load, anyone tried "power flow"

them uni box are designed to be loud and look big.

I have alonglife system on my merc which sound swicked, but again maybe a bit to loud for ur liking.

I would try to steering away from a custom back box on ur cab as they are always going to sound louder, unless u just get a stainless steel system made.

Supersprint and scorpion back boxes sounds great

[DaveGT]

It looks great and fit the tech 1 kit exit perfectly, Guess it would be ok on a hard top. I'll have to have a look around

[Ziggy]

Powerflow are very variable. A decent branch will be able to make something up that will sound how you want it to sound & look how you like. A poor branch... won't.

[rikster]

i had a powerflow on my cab and it sounded like a nova too loud so i went for the scorpion which i have had on two 325 e30's one the dtm and the other was the straight one, the dtm a bit louder on tick over and the le mans hardly noitceable but both sound wicked when you boot it, personally i always go for the scorpion back box sounds just right but every ones got different taste so hope this helps.

[DaveGT]

Found a sportex one that has the twin exit pipes, anyone tried them?

[cliffybabe]

i had a powerflow on my cab and it sounded like a nova too loud so i went for the scorpion which i have had on two 325 e30's one the dtm and the other was the straight one, the dtm a bit louder on tick over and the le mans hardly noitceable but both sound wicked when you boot it, personally i always go for the scorpion back box sounds just right but every ones got different taste so hope this helps.

yeah i have noticed the different notes between the dtm & the le mans

[DaveGT]

I've tried it again and the noise is OTT, Can't spend more than £150 any ideas folks??

[cliffybabe]

a bit over ur budget but its a scorpion


http://cgi.ebay.co.uk/BMW-325i-E30-SCOR ... dZViewItem

[grahamf12]

Have you seen my post in part's for sale DaveGT,
I'm selling a Sebring backbox (Stainless) approx 1 year old, excellent condition, defo not to loud, lovely hum at tick-over and not much louder that standard at motorway speeds

looking for £150 (offers), currently £295 in Zone shop...

[DaveGT]

The Cliff but it's a single entry!

Grahamf you have e-mail!!

[cliffybabe]

what ur car hasa single pipe?? what engine is it u have??
as the scorpion has a twin entry

[DaveGT]

1987 320 cabby

[cliffybabe]

1987 320 cabby

so u should in theroy have a twin piped system

[DaveGT]

No idea, there's a kwik fit type one on there doesn't look ome

[cliffybabe]

here's a shot of my old zaust and my scorpion system

[DaveGT]

Mine has the twin down pipes to the centre box but then a single out of the centre to the back back

[cliffybabe]

Mine has the twin down pipes to the centre box but then a single out of the centre to the back back

yep seen a few of those now, when buying a zorst bear in mind u will need to get one that has a single intake as normal 6pots have a system like mine

[DaveGT]

Yep I've found a "sportex" 2 part system that looks ok, anyone here running with sportex??
If not I'll just buy the twin pipe middle section

[bmwe30mtech]

Mine has the twin down pipes to the centre box but then a single out of the centre to the back back

Thats normal for a 320i.

[cliffybabe]

Mine has the twin down pipes to the centre box but then a single out of the centre to the back back

Thats normal for a 320i.

i was always under the impression that 6 pots had twin pipes

[DaveGT]

Wouldn't the twin pipe be better at getting the gases out faster?

[bmwe30mtech]

Mine has the twin down pipes to the centre box but then a single out of the centre to the back back

Thats normal for a 320i.

i was always under the impression that 6 pots had twin pipes

325i does, 320i does not necissarily.

Always learning Niel

[cliffybabe]

325i does, 320i does not necissarily.

Always learning Niel

true true

[NL-BMW]

Powerflow = Loud

[DaveGT]

I currentry have a 3 part system with twin pipes into the middle section and a single pipe out of it, As in the link below. I want to change the centre section to fit a twin in and twin out so i can fit a twin entry back box but i'm have trouble find the part number anyone know what it is, If you got one for sale get in touch!!




http://i178.photobucket.com/albums/w256 ... 1172306652

[MarkP]

What about a Mongoose exhaust. Are they too loud?

[DaveGT]

No idea?