Big Mick

I'm going to lower my diff ratio from 3.23 (I think, as there is no tag on the diff) to 3.45.

What do I need to do/buy to ensure the speedo and trip computer remains (resonably) accurate.

Thanks,

Mick

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2004 BA XR6 TURBO Phantom, Auto, Premium Brakes & Sound, Leather etc. etc.

rossi

Update to a 23 tooth speedo gear.

__________________
Learn from other people's mistakes. You won't live long enough to make them all.

If there's commotion coming from the passenger seat, and nothing but earth going round and round outside the windows,.......then everything is not as it seems!

The only time you have too much fuel, is when you're on fire!

Big Mick

I assume this means that there are no computer changes/mods required, just the speedo gear?

Mick

__________________
2004 BA XR6 TURBO Phantom, Auto, Premium Brakes & Sound, Leather etc. etc.

EBXR

Raptor originally pointed this one out.

Have a look at the following site:
http://www.chris-longhurst.com/carbi...yre_bible.html
Half way down, it has a tyre/wheel calculator, so you can see how far out your speedo will be to see if you actually need to make changes.

EBXR

Try this one as well:

http://www.bmwcsregistry.org/Technic...ternatives.htm

Bass Crazy

Ford sell the gears for under $20, easy to replace.

rossi

Yep! That's what I did to mine. I've got an auto though. Not sure about the manuals. It seems to work. No speeding tickets just yet!

__________________
Learn from other people's mistakes. You won't live long enough to make them all.

If there's commotion coming from the passenger seat, and nothing but earth going round and round outside the windows,.......then everything is not as it seems!

The only time you have too much fuel, is when you're on fire!