Are there any free mods i can do to my 1994 Camaro z28 m6?

 

TB bypass, gutted cat, egr delete, air delete,

 

of those the only one you'll see a significant gain would be the gutted cat if you pass emissions IMO

 

true dat

 

Also MAF descreen and port & polish, although many advise against it since the sensor element is very sensitive and could get damaged in the process, causing various symptoms.

But you could always do what I do and buy a stock MAF for cheap from someone here and P&P + descreen that one (but then I guess it's no longer really a "free" mod).

BTW if you're looking for the website for these I beleive it's: http://www.installuniversity.com/

 

all i did with mine is got the 80 series flowmaster, took my cat out, air foil and K&N airfilter and i can honestly say this sure woke the car up a bit, for not so much money anyways, but not free.