Are they any good?

Are the Granatelli MAF Ends worth anything?
Also are 1.6 Roller Rockers worth anything, some say yes, some say no.

 

stock MAF is good to I think 450 horses then after that you need the granetelli, 1.6 rollers are worth it as a good bolt on to see anywhere from 10-30 horses depending on application. granetelli MAF will not show 10-20 horses like they claim, look at some people who dyno'd with and without it, you'd be amazed at how some people LOST power with it...Remember, it's just MO