6' Owners i need your help..

[Curt]

That's the thing with NA petrol tuning... without adding boost it's hard to get significant gains without spending big money. In fact, even minimal gains require significant money... which is one of the areas where they differ hugely from the HDi tuning you're used to...

I don't think they'll be anything to gain from a remap on a standard lump, only with cams etc. But then unless you go for the mildest of cams, you have to take into account that the pistons may need work (especially if the head has been skimmed) as the tolerances are so tight.

Plus, because you haven't got the wave of torque you get from a diesel (especially as an NA petrol remap with cams will probably move the power higher and reduce torque) you've got to take into account economy will be worse...