All Things Mk5 > Performance Modifications

diffs in the wet !

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MAT ED30:
ok mate just for u i will do one in the members cars so give me 5 min to start it  :happy2:

RedRobin:
As others have said, a diff doesn't stop wheelspin but it greatly helps maintain/find grip. Wheelspin is down to the condition of your tyres, the road surface, and how you use your right foot. Smooth and progressive is the way forward.

Msportman:

--- Quote from: gillm on March 18, 2010, 04:40:22 pm ---just had 1 fitted and im still getting alot of wheelspin in the wet , is this to be expected ? i have inly driven cars with diffs in on dry roads/track

--- End quote ---

With your amount of torque it will always struggle to find ultimate traction especially in the wet but more importantly is the issue of early boost spike and/or power modulation with DBW cars.

The biggest gain using an ATB diff will be on a nice sunny day using track day rubber where when your increased heat in the rubber on intermediates or similar will transfer power nicely to the outer wheel and pull the front nicely through the apex. It is all about timing as crucially with the  torque your engine or the Edition 30 produces will easily overwhelm the front if brutal.

I've had them on most of my previous cars and found it worked best on my 200bhp valver where the more sensitive and less torquey engine made it easier especially at Combe.
I found that I was lapping as quick if not slightly quicker than Bill Brockbank with his Jetta in my infamous valver at approx 1.21-1.22 around Combe. Amazingly I was lapping at 1.23 in the APR Stage 3 MKIV with 350bhp and a diff.
The Edition 30 on stage 1 no diff OE brakes but Yellowstuff pads and Motul fluid I peddled it at 1.23-1.24 on Intermediates and no diff. APR Stage 2 on road tyres made it slightly slower (To be expected). I never did try the full combo of Inters diff and big brakes.

I would look forward to warmer weather and Inter tyres and a good blast at Combe to see the real gains....1-2 sec per lap.

gillm:
cheers for the info mate . be at combe soon so i hope to see the benifits on there with it . been playing with the car over the past few days (brakes needed bedding in so was not thrashing it ) and its interesting feeling the diff work . i have had the outer wheel spinning which is quite rare

fuscobal:
Mytraction definately improved with the Peloquin on the wet and snow. With F1 asymmetric wich are very good on wet, I can almost WOT without loosing traction wich is absolutely awesome for a car wich has 380HP on FWD. The coilovers also help here !

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