Diff ratio help s15

kev200sx

Member
Alright lads,
I'm hoping for a little advice. Basically ive just had my car remapped on a new turbo setup and it has completely changed the way the car drives and more importantly the way it drifts. I used to have a t28 boosted to just shy of 300hp now got a holset hy35 with 414hp (375ftpt) a lot more lag then before. (Full boost by 4.5k)

I've been told to use a 4.3 ratio diff as ive got a welded 3.7 manual s14 in their at the moment and it's making it hard work for tighter corners.
what would be the best ratio diff to make it a little less top end power and more uk track friendly. I know just grow a bigger pair of balls would sort it but id rather not completely destroy my clutch and gearbox quicker than I have to lol

The spec of my car is
sr20det
Hks 264 step 2 cams
adjustable cam gears
bc valve springs
rocker stoppers
Holset hy35 turbo
top mount setup
Tial 38mm external wastegate
740cc injectors
full 3" exhaust
fmic
Sard fpr
apexi pfc with commander
blitz sbc spec r
255ltr fp

Any help would be appreciated lads cheers
 
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