Big gains are not really possible on NA engines, the JHM map does unleash quite a bit of power as it modifies just about every parameter in the map however the biggest restriction in the system are the cats, it's common practice to delete the precats and hollow the middle cats or Milltek exhausts are pretty popular too and fit well however the quality is to be desired and materials are cheap + they still use mig welds which rust shortly !
Engine has high compression ratio, it will need thick spacers (or new pistons) in order to drop it to suitable CR to suit supercharging and the rods are quite weak. JHM does a supercharger kit for it along with long manifold headers and rod package which unleash up to 800 Bhp potential- bank busting prices though !
Im Based In Saltash Cornwall Not sure where you are but most people are miles away from me lol. I appreciate your advice my friend.
That Sounds like the direction Im aiming for. Great thanks for your Help my friend.
I went 2" larger in size, from 18" Avus alloys to 20"x9" forged S8 alloys... As above, slight loss of ride quality but not bad at all in the end, the steering is so much more precise and the 20" are just as light as the 18" wheels !
