Something different for an exhaust

[MattSA9N3]

I've decided to go straight to a stage 2 Revo tune on my car as I already have an FMIC, SEAT intake with BMC filter and a few other supporting mods done.

For an exhaust, instead of just doing the usual Milltek option, I wanted to be different and just run a single 4" tip out the back, maybe even in titanium.

The Polo WRC car runs single outlet.



Thinking a Magnaflow hi flow cat with a Magnaflow muffler down the back with the 4" tip. System would be 2.5".

Anyone else gone single outlet on here?

[simon k]

pretty sure most people who have done the exhaust are using a single outlet - I certainly will be when I make a new exhaust...

[MattSA9N3]

pretty sure most people who have done the exhaust are using a single outlet - I certainly will be when I make a new exhaust...

Ever considered one of the Japanese brands like HKS or Kakimoto?

[simon k]

not really, I don't like them loud, and not keen on the milo tin look. I'll just get a resonator and a good flowing muffler and stick with whatever size outlet that has

[rgvlee]

3 inch TBE with 3 inch dump on mine
Magnaflow rear muffler and mid resonator, magnaflow cat
Too loud imo
On my to revisit list one day

[MattSA9N3]

3 inch TBE with 3 inch dump on mine
Magnaflow rear muffler and mid resonator, magnaflow cat
Too loud imo
On my to revisit list one day

I don't mind loud.

[Polo GTEye N9]

Hi Matt

I have the REVO 2 tune. Custom CAI, THS FMIC and dump with Miltech with a sports muffler single 2.5 outlet that keeps it subtle.

It did have a cannon but drone was horrible. Too loud as well.

I recently had the air charge delete and surprised how much better the fuel usage is.

Cheers Al

[MattSA9N3]

Hi Al,

How does it go with stage 2? At this stage I'll be going Magnaflow cat & muffler with a 4" titanium tip.

[simon k]

Any exhaust that is 2.5" or more will handle getting rid of the exhaust from a stage 2 type tune - as long as the cat is a 100-200 cell and it's a straight through muffler you'll be fine. If you don't care about loud, go for a 3" system and it'll serve you for any future performance mods you can dream up

If you talk to people and they say "oh, you need so much backpressure and blah blah", they have no idea what they're talking about. Backpressure is always evil, blown and NA motors have an ideal size exhaust to promote scavenging, turbo motors would prefer no exhaust at all

[MattSA9N3]

If it doesn't cost much more, might as well go 3".

Not sure I'll be going any further than stage 2 (famous last words).

[seangti]

Mines currently a 4" down pipe into 3" resonators (x2) with a 2.5" muffler. I had a 3" cannon style muffler and it was just too loud for the highway driving I do. The 2.5" muffler with baffles has helped, but I've since ruined it by running Federal RSRR tyres

Mine is still louder than generally acceptable at highway speeds. I can now only put that down to the 4" down pipe.

Sounds pretty f'ing good though

[simon k]

Mines currently a 4" down pipe into 3" resonators (x2) with a 2.5" muffler. I had a 3" cannon style muffler and it was just too loud for the highway driving I do. The 2.5" muffler with baffles has helped, but I've since ruined it by running Federal RSRR tyres

Mine is still louder than generally acceptable at highway speeds. I can now only put that down to the 4" down pipe.

Sounds pretty f'ing good though

are the two resonators there for damping different frequencies or just for the maximum capacity?

don't happen to have a picture of the system do you? I'm sure it's just piping into piping, but I'd just like to see what a big exhaust looks like under the floor - routing/clearance/hangers etc.

[MattSA9N3]

Found a Remus universal race muffler that could be worth a look. $370 so actually cheaper than an X Force. Bet the neighbours love you Sean

[Polo GTEye N9]

Hi Al,

How does it go with stage 2? At this stage I'll be going Magnaflow cat & muffler with a 4" titanium tip.

Mate, the first time I drove it I was impressed. I had a MY06 WRX with 209 KWATW, (detuned) and the Polo was pretty impressive but still runs out of puff in the upper RPM.
Jimmy Mac drove it and said he was surprised how much grunt it had.

Simon is right Backpressure is the enemy!

Cheers Al