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It'd be clad on both sides of the sheet metal. In our conditions, it'd last just fine unless you had a slammed setup so the aluminum layer got scraped through. The welds aren't fully corrosion proof but it would most likely take a decade for them to become an issue.
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Resident grumpy old fart
VW - Metallic Paint, Radial Tyres, Laminated Windscreen, Electric Windows, VW Alloy Wheels, Variable Geometry Exhaust Driven Supercharger, Direct Unit Fuel Injection, Adiabatic Ignition, MacPherson Struts front, Torsion Beam rear, Coil Springs, Hydraulic Dampers, Front Anti-Roll Bar, Disc Brakes, Bosch ECU, ABS -
Yeah, exactly. My golf was over 10 years old when I sold it and the exhaust still looked brand new after being washed, only corrosion was on some of the welds but not heaps and my car came from far north Queensland
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Stage 2+ Intercooler Carbon Intake Downpipe Swaybar DV+ Remsa.Comment
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Remember, the stock system is "Aluminised", pull one off a 12 year old Golf 4 GTI & they generally have no signs of corrosion.
Our new manufacturer does a lot of 4WD systems, and they get very good service life out of them, even when driven on the beach!Comment
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42DD have an extremely low problem rate using alum-mild steel on all their systems. I am yet to have a single problem, but my numbers are nothing like yours Guy. That said the lowest hanging bits are indeed stainless magnaflows mufflers and resonators, I would assume any local pipe would have stainless muffs? This is typically where any acidic condensation seems to rust out old steel systems first...and where the slammed cru would be sparking first.
I think steel is fine unless you intend to keep the car for longer than 10 years, or drive over salty ice!
Also, even in massive 2mm thick 14 gauge wall, the 42 systems are lighter than OEM, but I suspect that's a muffler difference just quietly!
My vote is a somewhat biased mild steel!2014 Skoda Yeti TDI Outdoor 4x4 | Audi Q3 CFGC repower | Darkside tune and Race Cams | Darkside dump pDPF | Wagner Comp IC | Snow Water Meth | Bilstein B6 H&R springs | Rays Homura 2x7 18 x 8" 255 Potenza Sports | Golf R subframe | Superpro sways and bushings | 034 engine mounts | MK6 GTI brakes |Comment
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Stainless was all the rage in the UK but Standard VAG systems would last 10 years even with the salt in winter. I'd be cool with a combo of mild and stainless in an Australian system.
GavinComment
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