[UKPAISLEY]

I know most of the traditional options, but as I havent been around the GTR's for about 4 years (Doing the Subaru thing) are there any big developments in the billet type bolt ons for the GTR to make say 450 mark ?
Stock spool up or early spool is the key.
I have been searching but its just old threads I find.
Regards DP

 

[UKPAISLEY]

The reason I ask is that on the subarus the latest billet design over the last couple of years are producing big numbers and a great drive. So is it true to say a single turbo is only good at about 600hp , when the new designes are better now. Also the new processing power of the latest ECU's you can set the frequency of the knok control and are just faster now. This gives the possibility of a higher compression ratio and better spool and closed loop control , over the valves and ignition.