I'm tryin to modding my 240 but pretty broke for now and lookin for cheaper mods. I keep seein' these ecu mods on ebay for pretty cheap 25 cents to like 20 dollars. They're usually called either like performance mod or speed chip. Something like these
http://cgi.ebay.com/ws/eBayISAPI.dll...category=10402 http://cgi.ebay.com/ws/eBayISAPI.dll...category=40926
Do these really work?