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Date: Thu, 23 Feb 2006 21:18:11 GMT
From: Paul Halliday <>
Subject: Re: C900 JT 3" Exhaust & Downpipe

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! > 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 :) > 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. > 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. Cheers fella, Paul

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