i keep hearing about a speed density setup instead of a maf on the 87 ta's what do they look like, how do i get one and from where, how do i hook it up, and r they better then the maf's how much more air does it provide

 

There's a tech article on how to do it off the main page


There's endless debates about whats better if you do a search.



For a quick run down:

Speed density Is the 90-92 ecm for the LB9/L98's (pn 1227730)

It uses a MAP instead of a MAF, becaues of this your intake tract routing possiblilites are endless, you can run without filters, you can run with cold air intake, you can run with ram air, you can run an open element, or whatever you want.

The prom size is twice as big, and because of that you have numerous other calibrations you can make if you get into prom tuning

Those are the two advantages.

The disadvantage is in later years with the better mafs that are out today your measurement of air flow isn't so direct, you measure engine vacuum with SD instead of actual air entering an engine, so accuracy could be brought into question, but practically when comparing a '165 (maf) and a '730 (map) ecm for the thirdgens as your only two options then of the two the technology in the 730 is more than enough to make up for the indirect air flow measurement calculations.