[scottsee]

well, good question. you can buy a gm mafs & translator setup and place them in 1 of 2 places. first, in the stock location. the only added benifit is when your running high horespower, high air volume, the gm maf will be able to see a brawder air volume band effectivly helping your all around air/fuel mixture (in a little way, kind of like a wideband 02, not totally). 2nd, you can place it between your bov and Tb, giving you the same result, but with the added benifit of venting to the atmisphere. if you tryed to vent to the atmsiphere without having the mafs between the two, you would be dumping precious caculated air volume, essentually messing up your air/fuel mixture sending you ecu crazy trying to figure out why its mafs isn't working correctly. your o2's would try and fix the problem, but your would always be running rich. some people have done it withoug using a gmfft and say it hasnt effected anything for them.

tunning is basicly air/fuel tunning. translators have basic controles. a couple people here have them. you can use a gmmaft setup if you like, but its not really nessissary unless your running outside of the factory mafs capibilities. you better off just getting a safc2 to pigglyback the maf and reconfigure the signal to the ecu giving you the desired amount of fuel. thats a really, really, really suddel discripion. dsmture has a tech artical about the basics of air/fuel tunning with safc. you need to read it. most importantly get a datalogger it will provide you with a feadback of what your setting safc2 are doing to your engien, performance.