For my ‘94 Z..
Trick Flow for $234.95
K&N for $249.95
is there any difference, other than $15.00?

 

The other one gives 27hp more. To the wheels.

Kidding. Just get the one you like. They all give about the same. Cut a square in the splash guard and install a sheet metal scoop for a little extra power. A mustang guy dynoed 7hp adding the scoop to a similar cold air setup. Unless you live in a rainy dusty climate. Also with a MAF car, if you over oil the filter during recharging or don't let it 'dry' long enough, the oil can travel up the snorkel and foul the heated maf filaments and cause a lack of power. Nothing a can of maf cleaner won't fix.