@john Unless you want to spend a couple grand on the engine, there's is absolutely sod all point. You could get away with cams, induction, exhasut and a re-map but that is the bare minimum. Anything else with just harm performance. If you change the stock intake only, chances are you will loose torque at the bottom end. Want more power on the cheap, buy a GT. NA tuning is expensive.
Rough costs:
Port & polish (done properly): £750 (I was quoted this for a C20XE head recently)
Cams (Piper BP270): £210 re-profiled
1.6 Brava Throttle body: £40 from a scrappy
GSR induction: £180?
Stainless manifold: £3-400
Sports cat: £2-300
Cat-back exhaust: £200
Proper re-map: £400
You could also investigate a custom fuel rail to allow bigger injectors and an FPR - £1-150 + £2-300 for the injectors.
To go further, forged pistons £500+, forged rods £700+ not sure how much it is to lighten/balance the bottom end but say a few hundred to be on the safe side.
Oh and let's not forget brake and suspension upgrades, say £1500?
Of course, by this point it's prolly best to go with standalone management, say £200 for the loom and £700 for the ECU and again, about £400 to remap properly - always best done on an engine dyno too.
@dave, who does the re-maps? Are they proper live remaps? Or do they just load a map on?
