Everything I've read about any of these add-ons (like the Tornado) is that it's a gimmick. If you could get an extra 10% fuel economy from something like that, the auto manufacturers would include them as stock. They're breaking their necks to get an extra 1% fuel economy.i do 60-75 on the GSP and turn pike and I still get these women passing me while doing their make-up for the day!
Has anyone tried the tornado in there suv?
I've had some different experience with filters and exhausts. I keep a pretty record of fuel milage consumption before and after any add ons and with just a drop in K&N I saw .5mpg increase over 5 weeks. Yeah not alot but better than nothing. I also so about .4 from my exhaust system. So together just say 1mpg gained. Now that not alot when your talking $450 but i'm sure adding on a few other things then getting a nice fuel consumption tune you'll be doing a bit better. Just my .02I kinda doubt that any motor type add ons(tornadoes,CAI, aftermarket exhausts) can improve mpg.