Date: Fri, 24 Feb 2006 20:02:15 GMT
From: "Al" <>
Subject: Re: C900 JT 3" Exhaust & Downpipe

"Paul Halliday" <> wrote in message > in article K4pLf.44823$, Al at > wrote on 23/02/2006 20:40: > > <snip> My preamble ... > >> As for the JT, yes Phil and Phil fitted it, apparently it was a git to >> fit, >> but its a top job and it doesn't catch on the road cushions like the >> standard one did as there's no front box. > > That's my main consideration. I'm just fed up of scraping over speed > bumps. > I get a dry day (rare for our part of the world), jack the car up, remove > the old clamps, setup the exhaust perfectly, stand back, admire handywork, > go for a drive ... Undo all that work on the first speed bump. Grrrrr! > WRT road humps and cushions there's no national standard in the UK, hence all the stupid variations. The Transport Research Laboratory have produced a couple of reports, but with regard to dimensions of humps there is no set standard! >> I LOVE the sound it makes, at all revs. Tickover is a really lovely >> burble, >> and about 2000rpm give the best reverberation, but 4500 through a tunnel, >> (well a long bridge) near me is just stunning sort of like... >> >> RRRRRAAAAAAAAAARRRRRRRRRRRRRRRRWWWWWWWWWW! >> >> Lets just say with the JT and the Bailey 26D dump valve it's a real >> symphony! > > I gather at cruising speed/throttle, the reverberation is not much more > than > the standard exhaust. I don't want to sound like some young scrote with > fart-can! On the other hand, the sound of an old school turbo whining up > through a 3" megaphone is very appealing :) Absolutely right, it is quite possible to burble around all day without attracting anything more than the odd admiring glance from petrol heads who know their cars! > >> Performance wise, like many on I've noticed a definite >> improvement, not so much in speed or power but the turbo spools up a bit >> quicker. Thinking about the downpipe but can't warrant the extra dosh, >> especially as it would involve a battery move to the boot, or a Varley >> red >> top.......KERchinggggggg > > I'd be going with a Varley Red Top to accompany the shallow elbow. I > gather > that's the key to unlocking quite a bit of lost horsepower on the C900. > That's what they say, but it's aother 140 pls the battery problem.... >> Go for it Paul, you will not regret it one bit. > > I'll need to save up ... The MOT cost "a bit" :( > The car is amazing now though. Money well spent, IMO, since the car gives > so > much back. Aeromotive have had it since Monday and I picked it up this > afternoon. There was some structural work to do and other than that a load > of little jobs I've ignored and a good tune-up. I've never felt it like > this > before though. It's really tight and erm, quite hard to keep hold of :O I > think my wastegate might need setting down a little, since it boosts into > the mid-red (0.85-0.9 bar) and pulls back to the yellow/red line with APC > (around 0.75 bar). That's on the standard APC box. > My recent MOT wasn't cheap either, 465! and that followed a couple of new Michelin Pilot Primacys a week or so earlier at 140!. Am exceedingly skint right now :-( BUT the she's going like a Swedish rocket! Al

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