Anyone use these?

[95F350XL]

Never seen 1 till today. Wondering if it makes any diff.
http://www.amazon.com/ACCEL-35368-Performance-Control-Module/dp/B000BWDWDY/ref=au_pf_ss_11?ie=UTF8&n=15684181&s=automotive&carId=001

 

[flareside_thunder]

They're supposed to let the spark dwell longer in there and deliver a hotter spark to the plugs and bur fuel more efficiently......I think lol.