Mk4 GTI 1.8T Exhaust Options

[leighaus]

(will be uploaded in 8 minutes)..

The video really distorts how good it sounds for some reason. makes it sound kind of farty i guess. sounds a lot nicer in person. Get lots of nice crackle and pops.. This was a cold start video so with the tune it revs pretty high from cold which would probably attribute to a bit of the drone you hear that is normally non-existant.

[stotto]

I think I have a small video somewhere on my PC, I'll see if I can find it and post it up.

[Traedayz]

That sounds awesome Leigh bit of grumble from these little golfs lol mines pretty stock atm. I'll take a ticket in line behind kenbot if you decide to sell in future unless I get something before then of course.

Trae

[stotto]

Sounds good! Quoted your post but I guess a question for everyone who has this system did you just go with the 1 piece value line down pipe which has the welded in cat at about $560 or the 3 piece which has the bolt in cat at about $670+ And also did you just get the normal aluminized steel or full stainless tubing (which is about $300 extra also)?
Would there be any problems with the 1 piece weld in cat over time? I guess the bolt in one would be easier to replace if it ever deteriorates in future

I went full stainless in mine with the 3 Piece DP. I think the aluminized steel would be fine for most of our cars, I only went the SS as I had a few extra $$ to blow. Stainless is more corrosion resistant as'well.

I thought I had more videos of my car but apparently I do not. Ill have to try and get some more.

[dubster99]

I went full stainless in mine with the 3 Piece DP. I think the aluminized steel would be fine for most of our cars, I only went the SS as I had a few extra $$ to blow. Stainless is more corrosion resistant as'well.

I thought I had more videos of my car but apparently I do not. Ill have to try and get some more.

Would love to hear this car take off and a drive by sounds good mate! Getting me keen to get my conversion on its way!

Anthony

[Traedayz]

^ Agreed. Sounds great stotto and thanks for the info also.

I found a thread on vortex where 42DD reply in regards to their mild steel & rust etc compared to S/S.

VWVortex.com - Megan or 42DD exhaust

Quote from that thread for the lazy:

We have these systems all around the world, in many areas with conditions worse than NY roads. We took into account corrosion when selecting materials to build our exhaust out of and aluminized steel will hold up to what is thrown at it. There will be some surface rust but you will find out that we use very thick, quality materials that are designed to withstand what they are put up against. If you ever have an issue with something rusting through (which is a very VERY small percentage) give me a call and let me fix it for you.


Q: So what does all that actually mean? I am concerned about rust.


A: Let’s start with the piping. Aluminized steel is a basic low-carbon steel with a coating of aluminum bonded
to the pipe inside and out. Like any coating, the aluminum protects the steel from the elements, preventing
rust. It holds up to 1600° and will never peel or flake off. The pipe underneath cannot rust until the aluminum
corrodes and the coating is degraded.
Our flanges are cut from 1018 cold roll steel. This material machines fairly easily and is consistent. We machine
to exacting precision to ensure proper fitment on your vehicle. Precision aside, steel rusts. The flanges will get a
coating of rust on them immediately, but are too thick to “fall apart” within the normal lifespan of this system.
Our flex section is made from 300 series stainless steel. The flex section will darken as it’s heated becoming a
dark brown color. This is normal for all stainless steel. The clamping bands on our flex sections are aluminized
steel and will share the same characteristics as our piping.
Our catalytic converter is provided in 409 stainless steel. 409 stainless steel is essentially mild steel with
enough chromium added to slow down the corrosion. It will turn dark brown quickly and will rust slowly over
time.
Our hardware is cad/zinc plated. This plating acts as a protective layer reacting with the corrosive environment
before it can reach the steel.


-John

So yeah I think the 42DD 3 piece catted mild steel system with possibly a ceramic coat from carformance will be the go for me. Thanks to the OP for creating this thread and to those who posted their feedback & of course the videos.

[kendog]

The email I got back from John at 42DD..

_________________________________________

Ryan,

Thank you for your email! Absolutely. Shipping would cost along (alone?) would be $347.12. I would contact Carformance, they have a freight forwarder setup that might be able to offer shipping to you at a better cost. They are an Australian dealer.

The difference between 2.5 and 3” is really sound and power band, the 3” system will be louder and have more top end power (more power overall) with the sacrifice of a little low end power compared to the 2.5” System. The 2.5” System will be a little quieter, with more torque down low than the 3” system but not as much top end power. Both systems will have gains across the board from stock.

If you have any other questions please let me know.

Thanks,
-John

John Pelton
Sales & Shipping Manager
42 Draft Designs
42 Draft Designs
Check us out on Facebook!

**Please include previous emails when replying**

___________________________________________

[adammm]

hey guys
i got a 2.5" Cat back (suppose to be cat back ) single resi just after dump (standard dump) to a single muffler out back. its quiet at idle, had it db tested few weeks ago and it blew 81 on on throttle and 91 off throttle, however, under load it changes a stack load

Mk4 GTI exhaust - YouTube

Ignore the starter problem, i hear its common on the golfs, need to get it sorted soon tho

[kendog]

I just watched that adammm, I like it! I like the tone, not loud at all really, but a much nicer deep tone!!

I just took my starter motor apart and regreased/reconditioned it. Works great now!! Not a peep since!

[VR6man]

The email I got back from John at 42DD..

_________________________________________

Ryan,

Thank you for your email! Absolutely. Shipping would cost along (alone?) would be $347.12. I would contact Carformance, they have a freight forwarder setup that might be able to offer shipping to you at a better cost. They are an Australian dealer.

The difference between 2.5 and 3” is really sound and power band, the 3” system will be louder and have more top end power (more power overall) with the sacrifice of a little low end power compared to the 2.5” System. The 2.5” System will be a little quieter, with more torque down low than the 3” system but not as much top end power. Both systems will have gains across the board from stock.

If you have any other questions please let me know.

Thanks,
-John

John Pelton
Sales & Shipping Manager
42 Draft Designs
42 Draft Designs
Check us out on Facebook!

**Please include previous emails when replying**

___________________________________________

The reply from Ryan is very spot on. It's exactly how my car feels, you really need to hold the car in gear for longer. You just learn to drive it differently.
I also get huge 'pops' at the upper rpm when on the boil.
Wall thickness on the 42DD is good and will last. It's been on my car for a year and hasn't changed appearance.

[Lito]

Maybe a lil' late but this is how mine sounds. 3in turbo back, no resonator

[dubster99]

Maybe a lil' late but this is how mine sounds. 3in turbo back, no resonator

Hey lito which turbo was this with? Only thinking 2.5" turbo back if I got the R32 rear bar with twin outlet as I think it would sound better.

[Lito]

Hey lito which turbo was this with? Only thinking 2.5" turbo back if I got the R32 rear bar with twin outlet as I think it would sound better.

That was just done tonight with the current setup but I didn't really notice a difference at idle/reving with any of the turbos. If you do get that catback, I'd recommend getting one that had single tips, those dual tips don't look like they'd fit in the r32 exhaust cutouts. I'd recommend a 3" downpipe at least though

[dubster99]

Yea ill be getting single tips like the genuine miltek system.

[schwartza3]

ok, so lets get some numbers of how many are interested and contact Greg at Carformance to see what he can do for us?

Kenbot & Traedayz, you guys up for 3"-2.5"? You can count me in