Exhaust questions?

[Mrk_Mickey]

The whole thing depends on backpressure too. The car would rely on backpressure that may be lost with such an increase in flow, you have to be mindful of that.

[Golf Loon]

Did you get it done aaron. I`d just go with the width you want and then add mufflers until its as quiet as you want.

I reckon Cat, then straight through to a generic smaller muffler in place of the hotdog and then a backbox. If its still too loud then get anothe one added after the Cat.

I am too old for loud exhausts too and have driven 2 VR6s with this setup that were very pleasant on the motorway.

Not much point going genuine and VW when you can go mild steel and generic for $300 or so all up.

Campbelltown Exhausts have always done decent work for me.

[The_Hawk]

Gotta call a few people (hopefully tomorrow if I get a chance) and see what can be done on Thursday... not that I leave these things to the last minute or anything

Campbelltown Exhausts will be interesting, they get all narky about doing things legally, they didn't want to replace the old crappy muffler with straight pipe when I fixed up what was a rusty POS with holes in it.... although in this case I'm adding things

There is also Macarthur exhaust or ... ewwww... Midas

[Golf Loon]

I just explain what I want and that I need no receipt and wont hold them responsible in any way. then they do what I say

[gldgti]

To answer some of your questions Aaron, yes the stock piping is 2.25". Yes, it goes from the Cat to a resonator (hotdog style), then to the briefcase style muffler, and lastly over the main rear axle into the backbox.

Stainless steel vs non....well....the only difference is it won't last as long, as you said. If you weld stainless and mild steels together in an exhaust, over a period of....>8 years (this is what I'm told) they will react against each other. This said, I personally chose mild steel because I didn't think 8 years was too bad for an exhaust to last. I probably won't have my car that long anyway.

I've replaced my exhaust with a cat-back system. To keep backpressure, Midas has installed 2" piping on mine from the cat, replacing the first resonator with a hotdog, deleting the briefcase, and replacing the backbox with a magnaflow one. It's got a great sound to it, however it does tend to drone right around the 2000rpm mark.

I paid Midas $200 to install mine, which included new piping from the cat all the way back and of course labour. I supplied the two mufflers.

If you're looking to refine it a bit, I suggest that you go 2-2.25" in piping, and replace the briefcase muffler with another, maybe smaller hotdog, for a more refined, but better than stock noise.

there is no galvanic reaction between stainless and mild steel - they will not cause corrosion if welded together. that doesnt mean that mild steel welded to stainless wont rust - it will - but just the same as it does normally. furthermore, any obvious corrosion around or through a weld path is likely related to the welding - the choice of wire, oxidised inclusions or incorrect welding procedure's (causing oxidation during welding) - will likely cause problems down the track.... but again, this is not the fault of the materials being joined.

[The_Hawk]

Rightio, booked in at Campbelltown Exhausts for Thursday morning, looking at round $400 if they do from the cat back (excluding the cat) and round $300 if they don't replace the rear box. All in 2.5". Will see if the replacement rear box looks any better than mine or not...

I told the guy about my trip on Friday so we are all good with in and out same day (if not morning) and he has confirmed all the various bits and pieces are in stock or available on the day.

Will be interesting to see how things go and what the end product sounds like. Might have to pull out the video camera and take some noise shots before and after. In some respects it will be a shame to loose the raw noise, in others the lack of bloody from the ears at 80 will make keeping the interior clean that much easier

[The_Hawk]

For reference I thought I would stick the camera under the old exhaust for a laugh:

http://au.youtube.com/watch?v=91iON0oAS4s


Will see how it sounds tomorrow...

[Jarred]

love that vr noise.

the induction is crazy!

[schoona]

For reference I thought I would stick the camera under the old exhaust for a laugh:

http://au.youtube.com/watch?v=91iON0oAS4s


Will see how it sounds tomorrow...

your not happy with this? try standert!! lol

[The_Hawk]

your not happy with this? try standert!! lol

I think it sounds awesome, but the drone gets a bit much when your in the car for long periods of time... like doing a Sydney to Melbourne run...