Ah yes I remember that. Maybe I was lucky as my P4 already had half the sports exhaust from new and just doing a ‘flash’ at the factory while I was having a 3zip tonneau fitted was all that was needed. Have some had to change ECU’s then?
I don’t doubt that a better manifold would improve things further but in my case I don’t think it’s necessary. I guess you could say the same with a lot of cars where the manufacturer is always balancing need with cost.
Fuel consumption has always been 40 ish, I’m happy with that.
I certainly wouldn’t exclude a GDI P4 from the shopping list.
