S4 exhaust valve
- Thread starter JM-S4
- Start date
And, so I've read, on the cabriolet they don't have them at all. So yeah, just keep them open lol
I have made a dual 3" exhaust for my s4, it's very loud even with the original back boxes in ! I don't think one could live with a loud, straight trough exhaust on the v8 engines...
It's well insulated so driving it on a run is fine- i would not live with a loud exhaust on a daily basis- this is no vauxhall nova with a cherry bomb but it's very loud on slow, full throttle run !
You do get used to an exhaust, but tbh, I like not having it really loud. When I bought my car, and drove home on m25, I didn't actually know that you could hear music on motorways lol. Subaru just droned all the way. But the Subaru is supposed to be loud lol. Which is why I want either an exhaust with valves, or a resonated, not too loud zorst
Mine is nice on the motorway, absolutely no drone whatsoever ! Also my stereo is in safe mode, misplaced the code so no music for me for a year or so ! I can build you a nice performance exhaust and still retain your valved boxes with a choice of tips, however I don't have much time lately !
The cabriolet didn't come with butterfly valves in the rear box. When I mention valves I want like a valvetronic system, out like what the Audi R8 has. The valves on a button. Quiet when I want, loud when I want. I also want s4 b7 quad tips, eventually, when I get my money sorted
Probably best to get the motors from a R8 then And we ca-n Look if they can be retrofitted to the stock back
Boxes ! To be honest the way they are built is quite nice as they quiet on low revs and loud on high revs- no point IMHO to have them loud without revving the engine ! No problem, whatever you want can be done...
Boxes ! To be honest the way they are built is quite nice as they quiet on low revs and loud on high revs- no point IMHO to have them loud without revving the engine ! No problem, whatever you want can be done...
Yep, love the idea of this. Stupidly expensive though :-(
Armytrix seem to be the leaders of Electronic valve technology.
Depends on technology and car manufacturer. The A45 amg opens up past a certain RPM automatically whilst and ArmyTrix after market exhaust for example has an 'open valve' button at any RPM.
Yeah I was looking at miltek and would have got a resonated one. Each to their own. You can change out the non res for res pipes though, and miltek sell them separately.
Not sure I could EVER get bored of the v8 purr. Saying that, ive never had one before.
JM-S4, just for reference, Adamss24 on here is a Master Audi Tech and welder. He'll build you a custom exhaust!
In my humble opinion, thats a better solution as he has an S4 AND is based in London (ish) if you are
JM-S4, just for reference, Adamss24 on here is a Master Audi Tech and welder. He'll build you a custom exhaust!
In my humble opinion, thats a better solution as he has an S4 AND is based in London (ish) if you are
The standard system just doesn't sound like a v8. Need a roar. I'm still undecided. Let us know how it sounds when it goes on, and if it is too loud.
JM-S4
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Exactly, sounds really muted. Also can't believe how they crush the pipes to the back boxes, not what you'd expect to see.
My S4 with an un-resonated cat back system. It's a powerflow system and has a crossover pipe. It sounds awesome but when you back off and cruise at 70-80mph it's nice and quiet.
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if you want to unlock the true potential of these
look at doing piggy pipes and getting rid of the pre cats .... this mod opens up the true potential of these engines
look at doing piggy pipes and getting rid of the pre cats .... this mod opens up the true potential of these engines
as hooblah says
its a pain in the ***
easier wit the manual gearbox as opposed to the auto as theres a bit more room
yes it will still pass an mot ' but you have to have the car remapped 'if you dont you will be running round with the mil engine light on constantly
if you remove the standard downpipe and gut the inside 'spend a little time smoothing things off inside it makes a big differance to how the car performs the engine no longer feels restrained and when you stamp on the accelerator there is no longer a momentary pause its instantaneously revs
theres not really a lot of room up there so the aftermarket ones tend only to be the same size tubing as the std ones
jhm do a pair of tuned headers where the downtube length has been altered and matched to the engine
i do believe theres a company in scotland that were making these as well
both these were about the best you could get for those engines
its a pain in the ***
easier wit the manual gearbox as opposed to the auto as theres a bit more room
yes it will still pass an mot ' but you have to have the car remapped 'if you dont you will be running round with the mil engine light on constantly
if you remove the standard downpipe and gut the inside 'spend a little time smoothing things off inside it makes a big differance to how the car performs the engine no longer feels restrained and when you stamp on the accelerator there is no longer a momentary pause its instantaneously revs
theres not really a lot of room up there so the aftermarket ones tend only to be the same size tubing as the std ones
jhm do a pair of tuned headers where the downtube length has been altered and matched to the engine
i do believe theres a company in scotland that were making these as well
both these were about the best you could get for those engines
