lukeuk

Hi i have just put a sti version 4 gear box in my uk wagon,i had it mapped before with my uk box in do i need to get it mapped again because of fitting new box thanks all

172sport

iTrader: (6)

Nope.

sy.

iTrader: (8)

no mapping req but was the rear diff also changed to match the gearbox as the sti box you have fitted will have different ratios to the uk

lukeuk

I never put the diff on and it is driving ok i have it thou should i put it on

samcowrx

You will need to fit that jap rear diff, your new box will be winding your uk rear diff up, if a remember correctly.

lukeuk

how long does it normally take to break that diff and is it hard to change the diff ?

sy.

iTrader: (8)

not sure which way it would go(gearbox wind up diff or diff out run gearbox front diff) either way needs to be changed asap the sti gearbox is 4.1 final drive and the uk diff is 3.9 i think thats right anyway so defo mismatched i am glad i asked this now fella

lukeuk

is that u sy from brum its luke

sy.

iTrader: (8)

yep luke what ya like lol if you have swapped the box ok the diff will be easy with the 4.1 ratio's that is gonna be slightly quicker gearing so that car is gonna move some (even more than it did anyway)although it will poss feel like it needs another gear when in 5th!!! if ya got my number give us a call

lukeuk

Seem s the same but second feels like it is a rocket can u fit the diff?

BIG FUD

iTrader: (84)

Your diff will wine not your box also u will need mapp to tweek to alter finall drive ie get more top end figures diff will be fine for locall driving ie no mad boost ect......

OK BRO LMAO

sy.

iTrader: (8)

sort him out fud 4.11 diff req then that car is gonna be nice on the 1/4mile

lukeuk

What max power do you think i could get out of my vf35 turbo

sy.

iTrader: (8)

340-350poss with those cams

lukeuk

I am already at that power now and only on 1.3 boost you dont think it has any more?