Milltek De-baffling?

[JamJay]

No worries. I spent ages researching this, got told by loads of people that a 1.8T doesn't do pops & bangs but I knew that simply wasn't true. I set about hearing loads of people's exhausts to see what was already available, quickly discounted Milltek as IMO they sound tame (lame? ), Blueflame etc. I also hunted YouTube for months but the closest I came to the sound I wanted off the shelf was Piper who use a tiny rear box, it was still quite muffled though and tuned not to pop.

That was that really so I set my sights on custom fabrication, went to a Longlife branch and described what I wanted, they sure gave it to me. It's loud, cold start up sounds too loud where I live, coming out of my garage and into an enclosed area the sound bounces off off of the surrounding buildings and I do wonder if I made a mistake yet warm idle sounds little deeper/louder than an idling Milltek. Driving it is a different matter, I soon remember why I stuck it on there to begin with...amazing!

 

[Klone]

i have spoken to a few places and they have said the same... its really all or nothing... i dont want the car to sound barry and rival the local chavs... but i want more from the exhaust... some pops and bangs would be lovely too

might look into a new backbox then... can i remove the mid section without any major problems?

 

[JamJay]

Mid-section is neither here nor there, do as you wish to it really. Noise restriction is mainly all in the back-box and how free flowing it is. If I got mine tweaked then I'd have the rear box muffled more slightly but I'd be worried of losing that racey sound.

Your car won't sound barry, it's not 16v for a start so you won't get the burbly horrid sound when they plant their foot flat to the floor at about 1000rpm. Secondly it's turbocharged so that stops it sounding like scaffolding pipe (TC is somewhat of a noise restriction in the system).

 

[Klone]

yeah i will have to get more info on this wont i

cheers Jam

 

[Mo Arif]

The Milltek systems dont use baffles..havent done for a long while.

They utilise straight perforated tube with acoustic material packed around it to form the internals of the silencer.

Opening the silencer up will only cause you problems in the long run TBH.

I would advise putting a downpipe with either cat or decat and use a non-res centre section, this will give an increase in sound and a deeper tone.

I'll say again, you need...

3" DP
3" Decat/Race-Cat
2.5" or larger Cat-Back with no middle box and a very small (custom) Back-Box that uses a straight through design i.e. cylindrical silencer with pipe from mid-pipe > tail pipe surrounded by a little muffling material (depending on what sound you want).

Ok let's clear this up once and for all.....


The Milltek system for the mk1 Seat Leon Cupra (180) is NOT loud, the non-resonated version has slightly deeper , ever so slightly, not noticeable at all, the resonated version sounds like the standard exhaust,


I have, a 3" inch downpipe:

A 2.5" inch Pure De-Cat:

and a 2.5" 'Non-resonated' Milltek cat-back system:

So let's go through that again


3" Inch Turbo Back Down-pipe

2.5" Inch Pure De-Cat

2.5" Milltek Non-Resonated Cat-Back system



This is NOT loud at ALL! I can hear my A'Pexi Air Filter ABOVE the Milltek System:

This tiny (compared to Jetex) Air Filter is LOUDER then a Non-Resonated Milltek Cat-Back system


Let's go back and see my previous exhaust set-up


Resonate Centre Section:

Almost the same size back-box as the resonator! / silencer:

This set-up above, popped and banged like mad, had such a SEXY burble on IDLE, and on full throttle is sounded awesome! seriously not like a subaru / evo, just perfect

I don't understand why someone has suggested that these engines should NOT pop and bang? it's bad for them? over-fuelling

My engines running spot on, timings are near perfect, 02 sensor readings are spot one.

 

[JamJay]

Mo, you've read what I wrote wrong. I said that you need to use a Cat-Back with a free flowing rear silencer i.e. a small cylindrical one. A mid-silencer really does nothing, just tones it down that little bit more and aims to stop in-car resonation. I removed mine as I don't care about a hum on the motorway. That said it's still pretty tame when cruising but louder than a Milltek of course.

No-one has said that you SHOULD NOT make the car pop & bang, more the point that it's hard to get a 1.8T to do it or rather not many people have acheived the effect (probably because most buy Milltek which isn't engineered in that way). A car that backfires means one thing, overfuelling which CAN be at a safe level. You'd probably find that most cars leak a little fuel into the exhaust even with a standard system but you'd never hear or see the byproduct (pop/flame) due to the contruction of the Cat & Cat-Back.

 

[Mo Arif]

Mo, you've read what I wrote wrong. I said that you need to use a Cat-Back with a free flowing rear silencer i.e. a small cylindrical one. A mid-silencer really does nothing, just tones it down that little bit more and aims to stop in-car resonation. I removed mine as I don't care about a hum on the motorway. That said it's still pretty tame when cruising but louder than a Milltek of course.

No-one has said that you SHOULD NOT make the car pop & bang, more the point that it's hard to get a 1.8T to do it or rather not many people have acheived the effect (probably because most buy Milltek which isn't engineered in that way). A car that backfires means one thing, overfuelling which CAN be at a safe level. You'd probably find that most cars leak a little fuel into the exhaust even with a standard system but you'd never hear or see the byproduct (pop/flame) due to the contruction of the Cat & Cat-Back.

I totally agree, I quoted what you wrote as an example

 

[Mo Arif]

I don't care what anyone say's but this noise / bang and flame is awesome for 1.8T engine, Not a leon but it's twin:

http://www.youtube.com/watch?v=BL6l7ayv2ok&feature=related

http://www.youtube.com/watch?v=VUZB8VwXrxo


IMO This is how an 1.8T should sound like:

http://www.youtube.com/watch?v=leWrFN3CJE4&feature=related

 

[seatcupramad23]

i've had miltek and would never buy from them again, exhaust rattled off the rear beam after 2 months and sounded so quite for an aftermarket exhaust was unreal , resonated or non resonated makes no real difference performance gains weren't mind blowing either compared to john ashley exhaust , on the same car made 5bhp and 7ft/lbs more than miltek system on my first cupra with equalivent turbo back set up , no doubt i'll get slated by miltek lovers but i'm not at fan at all think they cost too much for what you actually get i'm sorry to say you paying for name

 

[TubbyTwo]

Decat and decent sounding exhaust.

problem solved.

 

[Mo Arif]

i've had miltek and would never buy from them again, exhaust rattled off the rear beam after 2 months and sounded so quite for an aftermarket exhaust was unreal , resonated or non resonated makes no real difference performance gains weren't mind blowing either compared to john ashley exhaust , on the same car made 5bhp and 7ft/lbs more than miltek system on my first cupra with equalivent turbo back set up , no doubt i'll get slated by miltek lovers but i'm not at fan at all think they cost too much for what you actually get i'm sorry to say you paying for name

Your right, it's a very restrictive backbox

 

[TubbyTwo]

i've had miltek and would never buy from them again, exhaust rattled off the rear beam after 2 months and sounded so quite for an aftermarket exhaust was unreal , resonated or non resonated makes no real difference performance gains weren't mind blowing either compared to john ashley exhaust , on the same car made 5bhp and 7ft/lbs more than miltek system on my first cupra with equalivent turbo back set up , no doubt i'll get slated by miltek lovers but i'm not at fan at all think they cost too much for what you actually get i'm sorry to say you paying for name

Totally agree.

Came very very close to buying one then heard some and didnt bother just sounded like a crap drone sound, much like the stock system.

 

[TubbyTwo]

the popping and banging is just unburt fuel ignighting in the hot exhaust, nothing to worry about, all cars will do it with free flowing exhausts.

If you frequently get bursts of flame out the back either you have a Japanese turbo car or your fueling is a bit rich.

 

[Mo Arif]

I'm thinking of getting one of these:

Tailor it to match up to the Milltek piping

 

[seatcupramad23]

I'm thinking of getting one of these:

Tailor it to match up to the Milltek piping

looks mint but box looks evn smaller than mine and mines quite loud o boost

 

[Mo Arif]

That's the idea! lol, I'll see what happens, i'm still pondering the idea

 

[Ovni_cupraR]

This thread has put me off getting the remap + milltek exhaust I planned now
I was looking for an exhaust a bit louder than standard on idle, but with a nice sporty tone on acceleration, does a non-res milltek live up to this? Not too bothered about pops and bangs

 

[fa11ows]

This thread has put me off getting the remap + milltek exhaust I planned now
I was looking for an exhaust a bit louder than standard on idle, but with a nice sporty tone on acceleration, does a non-res milltek live up to this? Not too bothered about pops and bangs

I had a non res milltek fitted today...i was dubious about having the non res version as i didnt want chav noise just better under acceleration...i was going to go for resonated but picked up a non res catback off pistonheads for £170 and had it fitted today for £80 (included custom stainless reducer to cat)...

First impressions its quiet on startup/idle (bit louder when cold) but definatly comes alive at 4k rpm onwards, especially at 6k rpm where it roars!! Bit of vibration in cabin at low speeds and seems to vibrate more when parking/moving left at low speeds..(ANYONE KNOW WHY THIS IS??? lol)

Im happy though...didnt want pops, bangs etc, just better tone and less restriction than standard exhaust

HTH

 

[Mo Arif]

This thread has put me off getting the remap + milltek exhaust I planned now
I was looking for an exhaust a bit louder than standard on idle, but with a nice sporty tone on acceleration, does a non-res milltek live up to this? Not too bothered about pops and bangs

Nope, won't make any difference what so ever

 

[fa11ows]

Nope, won't make any difference what so ever

afraid i disagree...mine is "definatly" louder on both idle and even more so under acceleration, especially from 4k revs upwards