Wondering if this little gizmo would improve our brakes.....

http://www.autoanything.com/brakes/65A3153A0A0.aspx

Solution Without A Problem.

Properly maintained 914 brakes are not spongy.

If yours are, find what's wrong and fix it.

Poor/improper bleeding technique and excessive rear venting clearance are the #1 & 2 causes, with old brake hoses a distant third.