BMW M4 maintenance and tune!

We had this lovely BMW M4 in recently for some maintenance and some extra power too.

The customer reported smoke coming from the exhaust and a quick inspection showed the turbos leaking which is very common on these, so we replaced them with a rebuilt set of turbos. We also changed the cam cover seal as that was leaking, an oil cooler pipe and sump gasket as they were leaking too.

The front lower control arm bushes were cracked so they were replaced with genuine BMW and the rear diff mounts too.

We gave the car a service with fresh Millers engine oil and NGK 97506 spark plugs gapped for extra power.

We also installed Bootmod3 stage 1 remap and its now making a nice 488whp which is an estimated 566bhp at the flywheel. Lastly we installed an XHP stage 3 gearbox tune which speeds up the already fast gear shifts and makes it smoother too.