Before any additional modifications we took the MX5 to Autotronix near Sheffield for a baseline dyno run and health check.

Current Spec:
2.0 NC1
Racing Beat exhaust manifold
Top Gear Performance exhaust system
NO MAPPING

Average 172.3bhp 154lbft at flywheel
Standard 2.0 cars make on average 154bhp on this dyno
+18bhp from some good old bolt ons! 😎