Pics of installed BORLA are in my gallery.
SOTP seems more than stock but might just be I'm justifying the monies spent.
My shopmade seems to be more responsive.
I'll have to get some numbers from my G-Timer.

BORLA says 7-10%
K&N says 10%
Chip Company says 20%

Only a Dyno would tell for sure.

Want a smile...IF IF IF!!!
IF.....Chrysler says the Crossfire has 215.00 HP
AND IF...BORLA gives 10% (21.50)...15.00 + 21.50 = 236.50 HP
AND IF...K&N gives 10% (23.65)...236.50 + 23.65 = 260.15 HP
AND IF...STUSA Chip gives 20% (52.03)...260.15 + 52.03 = 312.18 HP

Lots of IFs...but the math looks good!!!