I picked up a Twisted Rotors Digital Rotary Compression Tester for my RX-8 and am offering compression tests. The local Mazda dealer wanted $240 to get it done on their machine and based on the quality of DAQ and pressure transducer that Twisted Rotors uses, TW's is better.

$100 per engine. I'll come to you. As long as the engine can be spun to 250rpm, you'll get your readings to 0.5psi accuracy. Accurate readings are temperature dependant so if the engine's out of the car they will be higher.

Discounts given for multiple engines and WCMA club memberships (ie. you actually track your car).

PM me for details or fire me off an email at McTinkerson@mail.com