Where to find some straight through rears exhausts ?

CatmanV2

CatmanV2

Member
Messages
48,797
FernandoIsFasterThanYou said:
Is there such a thing as custom back boxes with valves?

Mine has unsilenced x-pipe primary cat delete secondary 100 cell cats and the "squished" section is fully round so it is "loud enough" for the majority of the time but sometimes I want it to be louder hence why I would consider valved...

That said I read on larini's website you cannot go full throttle with the valves closed as it could damage the engine. I think I'm going to leave it as it is for the moment
Click to expand...

Well a decent factor could make you some valved boxes, or you can do what others have done which is simply put a by pass valve in before your rear boxes and vent all the exhaust sideways. There's been some discussion as to quite how sensible that solution is, but it seems to work.

I'm calling BS on the can't run full throttle with the valves closed. It'll certainly increase pumping losses and back pressure but what about the cars that come without valves?

C
 
FIFTY

FIFTY

Member
Messages
3,100
I thought the same C it's probably Larini covering their **** for any liability

You mentioned cars without valves but what about the Gransport which is valved surely there is no advice against running flat out with the valves closed. I did read somewhere on the forum that the ECU will open the valves if it senses some thing wrong with the car. Guess a 4200 won't have that feature maybe that is what they are covering for with that statement
 
RobinL

RobinL

Member
Messages
456
Contigo said:
Straight throughs and an X pipe no not a chance. You are into the 120db area there.
Click to expand...

I had wondered how loud mine had become. (Quicksilver X Pipe and Straight through pipes) I tried to gauge it by shifting down 4th to 3rd under acceleration in the A55 Conway tunnels on the Welsh Coast Road. I couldn't stop laughing!
My significant other has declared she isn't getting in the Maserati ever again. Unexpected bonus :)

On a serious note there are many valves out there if you hunt around. I used to runa 7.3 V* with Borla Straight through pipes a few years ago - their solution was to apply valving on only one leg near the tail pipe - the resulting sound was considerably muted - but worked well.

See examples http://www.apexi-usa.com/store/index.php/exhaust/conrol-valves.html?limit=30
 
Spartacus

Spartacus

Member
Messages
3,186
I fitted my straight throughs this weekend . And took it out for a test drive ........ Its got deeper and the backfire crack s are louder ....thats should do nicely ha ha


Ill upload a video next time i take it out . I was laughing so much i forgot ha ha

image.jpg

image.jpg
 
Last edited:
Spartacus

Spartacus

Member
Messages
3,186
I would nt know , I cant hear what they re saying . ... I see their mouths moving sometimes, but they could be saying anything

...then Dan usually turns up in his hillbilly truck
 
Last edited:
mchristyuk

mchristyuk

Junior Member
Messages
668
I live in a reasonably quiet Close and always feel a bit embarrassed "breaking the peace" with my Maserati. Especially so since I've had the X-Pipe and straight throughs fitted... it is VERY loud.

Well, the kids across from us refer to me as "Maserati Man" and always give a wave and thumbs up when I drive past. The widow next door she came out when I turned up after fitting them and said "At last. Now it sounds like a proper Maserati!".. and finally the elderly couple two doors down emailed me to say "We love your car! Don't worry about the noise.. it has 4 exhausts, it's supposed to be loud!".

I think if we were driving around in chavved up Focus' that made horrible 4-pot noises then we wouldn't get away with it. For some reason though Italian V8's always get a look of approval no matter how loud they are.

Of course there's always one or two who look down on it.. but sod that.. couple of seconds and the cars gone.. not as if you're parked outside their house at 3am constantly revving the nuts off it!

Mark
 
RSM Masser

RSM Masser

Member
Messages
2,437
Spartacus said:
I would nt know , I cant hear what they re saying . ... I see their mouths moving sometimes, but they could be saying anything
Click to expand...

They are probably saying "If I had a lilac car - I wouldn't want people to notice by making the exhaust loud"
 
CatmanV2

CatmanV2

Member
Messages
48,797
Most of my neighbours are the same. Happy for the car, but not so much if I'm warming it up at 0600. So I don't. Everyone's happy
Particularly me :D

C
 
GeoffCapes

GeoffCapes

Member
Messages
14,000
It took only one day of me having my car back before one of the neighbours complained.

But yet again it wasn't to my face, they said something to a friend of ours and she passed on the message. Cowards.
 
Gp79

Gp79

Member
Messages
1,398
Would you complain directly to a self proclaimed Geoff capes?!

Seriously though my wife thinks my GS is far too loud, sports cats and x-pipe, at least she knows when I'm nearly home so can get the kettle on.
 
Kyle4200

Kyle4200

Junior Member
Messages
251
Spartacus said:
Yes I would think that it's exactly the same on a pre face lift .
Click to expand...

Roger,

Also, have you got a H or X Pipe fitted? - would be good to hear the sound difference between the video (x-pipe) and a h-pipe as that is what I have at the moment.
 
Contigo

Contigo

Sponsor
Messages
18,376
Not straight through rears but more custom stripped standard back boxes, yours must be louder now with the straight pipes.
 
You must log in or register to reply here.