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[quote][i]Originally posted by nibnob21[/i] I have an annoying rattle that I can't track down. It becomes apparent normally on the overrun roughly around 2500 - 3500 rpm. First I thought it was the baffles in the back box, but after further investigation the sound seemed to be coming more from the middle/front end of the car. So I thought I'd investigate further at the weekend as I've read the heat shield rattling around the CAT is a common issue...well it turns out the heat shield has already been removed: [IMG]http://i57.photobucket.com/albums/g230/nibnob21/Eunos%20Roadster/0368.jpg[/IMG] [IMG]http://i57.photobucket.com/albums/g230/nibnob21/Eunos%20Roadster/0369.jpg[/IMG] The CAT itself seemed nice and solid and didn't seem an obvious source of a rattle, but it could perhaps have loose internals; hard to tell. The whole system is mounted very rigidly so I don't think it's fouling the frame around it. The other small heat shield at the bottom of the manifold seems solid enough. Some bits poking out the other side of the clamp may be causing a small rattle but they seemed pretty harmless. I did try bending them out of the way as shown below. It is a very tight space though so removing them wasn't really possible. [IMG]http://i57.photobucket.com/albums/g230/nibnob21/Eunos%20Roadster/0367.jpg[/IMG] The only other thing I noticed was that the exhaust is blowing at the bottom of the joint between the CAT and the rear section. Pooey :( [IMG]http://i57.photobucket.com/albums/g230/nibnob21/Eunos%20Roadster/0370.jpg[/IMG] This evening I've managed to pick up a new decat for just under £40 on eBay :) Seem to be out of stock in a lot of places for the size I need. The only ones I could find were twice the price! So bit of a bargain there. I couldn't find any that seemed to be fully silenced, but it's at least one of the slightly more muffled ones as in the picture below, as opposed to a fully bare straight pipe: [img]http://i.ebayimg.com/00/s/MTAwMFgxMDAw/z/ulcAAOSwQItT82C1/$_35.JPG[/img] Hoping it doesn't really add much volume but with the rest of the system standard I'm keeping my finger's crossed the increase in volume is reasonable; I've read conflicting things so I'll just have to wait and see! Not sure when I'll get a chance to fit it, depends if it arrives on or before this weekend. It'll at least help to sort the blow, and finger's crossed stop the rattle! [/quote]
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