What difference will a standalone ecu and exhaust make on this m44??

so this time I have decided to twist things a bit and add standalone and a good exhaust before adding intake manifold. these are the results. for those that havent seen previous video, this Class II been M44 swapped and Had BDS Stage 3 tune. next we should add our intake or test our v2 Cams Thank you for watching for our part please check bdsmotorsport.co.uk