Any fundamental differences between the newer Ford Motorsport F7PU-9F593-A4A 'Blue Tops' and the old standard 'Blue Tops' out of of the old Ford SuperCoupe T-bird that everyone has used for years? I understand they are both roughly 36 lb/hr units, but are they essentially equivalent and happy with the same chip calibrations?
I have flowed both sid-by-side on our flowbench and they are essentially identical in flow characteristics in all RPM ranges, and all pulsewidths. Also, the bluetops (and dark blue tops) are the most linear of all pintle style injectors so you can expect the economy and driveability using the minimum of parameter changes in the chip vs. stock param's. The original -967 blue tops are long since obsolete.
-John Spina
http://www.casperselectronics.com
http://www.casperselectronics.com/cobra.htm