These any good bought from scooby world

Been told they are good

 

Decent panel filter in your oem box will be as good for less money, unless your running an fmic,

 

I don't think the filtration isn't too good on the HKS filters, K&N are probably one of the best

 

For panel filters, Green score consistently well along with K&N.
As previous poster says, unless you are running a front mount and a cold air feed from the front, all you'll do is suck in hot air from the bay and make less power. If it's a bonus it will make more induction noise though....

I wouldn't use HKS filters at all - last thing I heard they were still oiled elements.
Oil + MAF = BADDDDDD!

Green or K&N panel filter in your standard airbox will liberate a few more bhp at a fraction of the cost. Exhaust and a remap will liberate far more.