Your email about the Exea antenna got kicked back to me, so here was my reply:

It does............... abosolutely nothing. I thought it looked nice so one day I just stuck it on. Supposedly it gives 20hp's, but that's just a rumor. Hehehehe......

 

20? With a cool looking antenna like that, it has to be at least 30 hp

 

Well, I had actually thought that it was to boost the signal to your FM radio, cause I dont know if youve noticed, but the built in antenna isnt all that great.

 

The antenna is built into the rear window. I doubt there is anyway to boost it. But hey, the antenna does look cool.