Is this throttle body worth buying?

[The Barge Captain]

Seen this on fleabay.  Is it a worthwhile upgrade? Will the ECU learn to cope with it by it's self?
http://cgi.ebay.co.uk/Vauxhall-omega-Enlarged-twin-throttle-body_W0QQitemZ250100991108QQcategoryZ10404QQrdZ1QQcmdZViewItem

[TheBoy]

I think the performance gains are not realistic. The throttle bodies are not the biggest restriction...

[Kevin Wood]

Yep. They're having a laugh.

Also, changing the throttle size will put out the calibration of the acceleration enrichment so you MAY find that it's hesitant when you open the throttle. Depends how much bigger they've made it.

Kevin