If you want your engine to go a nice shade of brown take the tray off.
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i left mine on a level crossing
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along with your silences
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@Fourrings - so, Steve was right about the fitting kit ...what about me then? Am I still coo-coo for poo-pooing ty-raps?!!!! I am a wronged man!!!
@Chris - run with the undertray - there are definite advantages to having it, it wasn't put there for decoration - as Fourrings said, you can't see it where it is!!
__MDC__Martin Cutting
aka Keeper of "The Teutonic Kitten"
It's not better than sex, but it runs it a close second.Comment
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Originally posted by Keeper of The Kitten
ok, I'll apologise.
Still think you're mad for saying it'll look gash though
2001 Avus Silver B5 RS4.
2004 A4 Avant 1.8T quattro Sport-LE.
1995 S2 Coupe - sold (sniff)Comment
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Lol! Apology accepted!!
Hey I work in the race car business (still, sort-of) and ty-raps are frowned upon except for securing cables and pipes!
(...and maybe for emergency repairs too!!)
If there is a proper way of doing it, that's the way it gets done.
Usually.
...but yeah, ty-raps will do the job!!
__MDC__Martin Cutting
aka Keeper of "The Teutonic Kitten"
It's not better than sex, but it runs it a close second.Comment
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Just my two penneth, but I noticed that there was more wind noise without the undertray too.Comment
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Yeah, that'll be the result of air getting turbulent as it catches on the uneven surfaces no longer covered by the tray - it would probably manifest itself as increased fuel consumption and lower top speeds too, but whether either is massively affected I can't be sure. I'd keep the tray.
Not sure about stock S2, but the tray I have got also has the vestiges of a Naca duct on each side at the trailing edge - though they do not extend into a set of ducts for anything in particular. Maybe these can be used for brake cooling if the tray has a further extension attached, I don't know.
__MDC__Martin Cutting
aka Keeper of "The Teutonic Kitten"
It's not better than sex, but it runs it a close second.Comment
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i was thinking of doing a under tray in ali sheet but need to know the sizes of it,has any one got any pics and measurements for one and also where would it mount.1990 100 2.2 10vqt 82k miles(now dead)
1990 90 2.3 20v 166k miles
1988 90 2.0 10v 181k miles
oh and a polo for work.Comment
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The "correctly installed"
undertray also keeps my nice and shiney engine bay, errr shiney! 
The Perfectionist
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Audi Class Concours winner Stoner Park 2014, ADI Concours D'Elegance Class Winner 2008, Runner up 2014. Winner, S2Forum Show'n'Shine Billing 2006 & 2008.
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My 3b engine tray has got a couple of duct exits cut in to it, presumably to aid air flow exit from hot bits of the engine?Ex S2 owner, now running around in an A4 Avant quattro...
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Forgot to add that mine has the NACA ducts too.....Originally posted by dan_bThe Perfectionist
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Audi Class Concours winner Stoner Park 2014, ADI Concours D'Elegance Class Winner 2008, Runner up 2014. Winner, S2Forum Show'n'Shine Billing 2006 & 2008.
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and mine is still wrapped in the porch,
as car still in sleep mode
then will clean its bits & show you
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