A uk classic running 440cc injectors,fmic,induction kit,full de-cat+stainless manifolds,vf23,ecutek map producing 300bhp.

What would the sensible choice be when replacing the turbo and having a comfortable power output of 330bhp, vf28?

 

Your existing VF23 should get you to 320-330 when mapped.

 

so why would it only be mapped to 300? all work was done by previous owner and extreme scoobies.

 

will have been mapped to what is considered safe, might be worth a phone call to find out why was mapped to that.

 

Could be the TMIC limiting power (but it should be good for 320-330 I would have thought). Injectors should get you to 325-340 bhp too.

The mapper probably mapped it safe i.e. a decent margin below the detonation threshold. Just a thought.

 

front mount, also depends on quality of the manifold, if its pish may be causing issues

 

Oops, overlooked FMIC.

But prob just mapped cautiously.

 

will give extreme scoobies a call and find out whats been done.