GT-R Register - Nissan Skyline and GT-R Drivers Club forum - View Single Post - Stage 5, over Stage 4/4.25.. worth it??
View Single Post
Old 20th September 2014, 03:59 PM   #10 (permalink)
Adamantium is apparently poisonous to Wolverine - who knew?
Join Date: Jun 2002
Location: London
Cars owned: Audi S5 3.0TFSi, Audi Q5 3.0TDi
Posts: 9,073
Originally Posted by Hugh Keir View Post
So on 4.5 and modified turbos you are boost / torque limited in the mid range compared to stage 5.

Stage 5 with upgraded turbos can go for a bit more boost to provide an additional 70/80 ftlbs mid range torque over 4.5.

BHP is +50 higher up the revs on Stage 5 when torque may not be quite such a limiting factor.

Stage 5 is just a higher bhp turbo and an intercooler. It does not include internals according to standard nomenclature. In short, you can't run any more torque with stage 5 than stage 4.5.

4.5 is a cheaper turbo halfway house. Beyond 5 is where rods and pistons change.

Adamantium is offline   Reply With Quote