installed a halltech stinger. car will not start with maf installed. any suggestions?

 

I take it, this no start condition just started after your install?
Check the connection to the MAF real good be sure you didn't break a pin or something when you took it off. What about the MAF itself, were you careful with it when it was out, and be sure everything inside is intact, those wires in there are pretty sensitive.
Trace back through your steps, and double check everything.