MK2 tuning Vs Mk3 tuning

[mike1pow]

Lets say a standard 182 produces 175Bhp and a standard 200 produces 185Bhp

Throw a set of ITB's and cams at them both and the 182 gets 210-215bhp and the 200 should see 220-230. (figures are from members cars who have had said mods done)

So both original inlet mani's, airboxes and maps are removed (Aftermarket ecu installed)

How can the Mk3 get more power? They are both F4R's and have had the same mods.

Mike

 

[.Kev.]

The Mk3's motor isn't an F4R is it?

 

[alanc1000]

The Mk3's motor isn't an F4R is it?

yes it is.

 

[Silent_Scone]

improved valve timing and exhaust from the factory are both helping factors - I'm sure theres a few other bits changed

 

[sideways danny]

F4R 830 has higher compression ratio, different inlet ports, fully variable cam timing rather than switched, and different cam profiles

 

[mx1_champ]

so the 830's cams fitted would be give a slight increase in performance... fitted along with pistons as i take its them thats diff and not the stroke length ?

 

[sideways danny]

been covered before, not that simple due to the VVT control,

CR difference is down to the pistons and the head as the chamber is different too. I'd like to try a set of pistons in a 73x block though