Actually not really an issue with the right application, sizing, housing. Some claim the exhaust gas is more dense at the rear and better yet. Less exhaust backpressure from the turbo out. We have some of the Outlaw 10.5 class drag racers using this with great results as well. I've seen placement under cars, in front and rear fenderwells, even spare tire wells. A little creative shielding or fabrication might be better in some apps.Geoff said:dear god, the turbo lag.
Of course a SUV will see a greater variety of terrain and weather situations. Unless they make a direct bolt on, maybe not the right choice for most. On performance applications, I kind of get enjoy rearranging things when neccessary. Not for all. I'm seriously planning a similar set up for my 240Z.