right,

I've got a MK4 XR3i EFi, it's a 1991 H, so very late registered one, one of the very last MK4's. The engine in it is very good, but totally standard, just a Janspeed exhaust

What kinda power could I realistically and reliably achieve without forced induction and without breaking the bank?

What filter/induction kit should I go for/ K&N or summat else?

Am swung towards a Kent Performance Cam Kit, but which one would be the best compromise? Also a Vernier Pulley

what else would I need, what else should I go for

Cheers