Choice of CATs?

[21TonyK]

I know there is no real power gain between a stock, or "race" CAT but has anyone got any advice as to why I should go for any particular one?

Basically I've been running a decat pipe for a while and the "boom" is getting a bit much and with MOT looming I thought I'd whack the standard CAT back on. Reduced the boom a bit but found that the CAT has a slight rattle which means the exhaust sounds like an tin can full of nails under load (I assume this is the pob. as it's fine revving without load).

Any suggestions?

(S2 Exige BTW)

[MRTOAD]

I believe Elise Parts sell a Sports CAT for around £190. About half the price of an official Lotus CAT and I understand gives a much better exhaust note.

[Bill K 111]

Just fitted this...
http://www.eliseparts.com/shop/index.php?main_page...

Sailed the MOT. Fitted easily.