Don't think I'd do it. Can't see that you'd gain all that much extra H.P., and the thot's of overheating my car isn't pleasant. We do still get some hot weather in the summer.
Once in awhile.
No, really!
We do!

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past MB rides:
'68 220D
'68 220D(another one)
'67 230
'84 SD
Current rides:
'06 Lexus RX330
'93 Ford F-250
'96 Corvette
'99 Polaris 700 RMK sled
2011 Polaris Assault
'86 Yamaha TT350(good 'ol thumper)