I am looking on ebay for Mini parts and i came across this vortex generator that you install in the intake tube is said to increase HP and increase MPG i was wondering if anyone had bought this product and if it actually give it the boost and extra MPG that it says it gives...

 

There are three or four threads that discuse these things. Do a search for turbonator. You will find a lot of advice against these devices.

 

Thanks Bumble after i posted this i actully starting looking and found alot