Quaife Diff by VWR....

[Top Cat]

Thanks for the demo of the Milltek and Diff in action today RR 

The way your car gripped on these roundabouts near JKM was very impressive 

However I think my SWMBO is going to put a contract out on you now as when I got home I put in a request for some additional spend which was quickly rejected (for now)

....My pleasure, mate

You better send me a pic of your SWMBO so I can keep an eye out for her!

I'm sure that the diff has even more to deliver once I've had my Bruntingthorpe 'education'. That last little roundabout was quite a good test as it was tight and wet and we went all the way round it.

My SWMBO (17yo daughter) is now asking for dinner.

With the mood she's in now you wouldn't be able to miss her   

Steve PG i think i've got a thing for your MRS, 
If she say's your doing the dishes then your doing the dishes. 

[SteveP]

^^^ Oh yes, you have to do exactly what she tells you or you get a beating. 

PS - If your online dear 

[topher]

RR is it true you now a stage 2 guy?

....Yep

Timing 5 / Boost 7 / Fuelling 9, as tweaked by Revo HQ.

I don't know yet what my problem on the rollers was today - I had left her ticking over for at least 15 minutes! But Jim reckoned my loss wasn't due to that. She drives fine and my boost gauge flicks up to 20+ no problem. I'm in good hands with Revo so not worried.

do you have a copy of your AFR graph? wondering if it could be down to something as trivial as a bad batch of petrol

[RedRobin]

....

Good thinking, topher

The AFR plot is almost identical (just drops faster at the start) to my last session on JKM's rollers in July. In fact the whole plot is similar.

In having my Quaife diff installed the battery would have been disconnected I expect (I can check with VWR) but she's obviously not stock.

[bacillus]

Perhaps since your battery was disconnected for some time you should consider getting your throttle body re-aligned using VCDS.

http://wiki.ross-tech.com/index.php/Throttle_Body_Alignment_%28TBA%29

[RedRobin]

....

Too much gobblygook for me! But thanks for the suggestion - It's appreciated. Surely my VW dealer can do this? (He's the nearest and quickest option).

[bacillus]

....

Too much gobblygook for me! But thanks for the suggestion - It's appreciated. Surely my VW dealer can do this? (He's the nearest and quickest option).

If VCDS has the capability to do a TBA then I dare say your VW dealer should be able to do it as well.

[RedRobin]

....

Further thoughts regarding the diff:

The Mk5 GTI has TC as part of ESP. The ESP can be switched off via a button in front of the gear stick. The ESP always defaults to being On whenever the ignition is switched on. On the road I always drive with ESP On - Imo it's not a matter of proving you're a man by switching it Off! But different cars behave differently.

Don't ask me about the exact structure regarding TC and ESP on the Mk5 - It gets complicated! But the TC icon in the speedo lights up every time the wheels are losing traction and signifies the ESP coming to the rescue.

One result of having a mechanical diff like the Quaife is that the TC sensor system is less frequently called upon to instruct the ESP (or however it works). In other words, the ESP follows the Quaife's physical responses rather than rely on electronic sensors which can either go wrong or get dirty like my Wheel Speed Sensors did and which probably then fooled my ESP into action which caused wheel snatching in compensation - Not confidence inspiring!!

Someone who knows more than I do may post that I'm talking bollox but I offer this as being to the best of my knowledge.

Having spent as much as £1,500 on any mod, the placebo effect naturally comes into play - You say to yourself (or your SWMBO) "Of course it works well - I spent all that money on it and of course I make the best decisions". However, the Quaife is something which has such a physical result that it's not simply your butt-dyno. Whether spending the money is worth it to you or not can only be your decision but I have no regrets and everybody who has either done the same or owned a FWD car with LSD already installed, has nothing but good to say about it - It's an often overlooked mod.

If your ownership of a Mk5 GTI doesn't occasionally involve spirited driving (as appropriate) then it's not really worth it. Installation involves open heart surgery (by someone who really knows what they are doing on DSG) and you will not see any money back - You ain't gonna be removing it come sale time! But I love driving and am enjoying the benefits and have no plans to sell my GTI - It's too good an allrounder - Fun and very practical.

If you love track days (I haven't driven any) I'd say that the Quaife and a big brake kit like AP's are a must!! £3-grand for those two mods though.

[Teutonic_Tamer]

....It's a Quaife diff modified to VWR's design and manufactured by Quaife exclusively for VWR.

Sorry, but that just does not ring true at all.  The Quaife diff in your car as fitted by VWR is exactly the same as any other Quaife (Mk5 GTI DSG) diff - supplied and/or fitted by anyone else.  For VWR to "claim" that the one they fit is somehow exclusive to them is very misleading, and probably breaches some UK law!

....Well, all I can possibly do is report/post information which is always to the best of my knowledge and VWR's Technical Manager has stated to me in more than one conversation that the version of the Quaife which VWR offer is exclusively for them and has resulted from their (VWR) design suggestions based on usage in their race cars.

I best double check that I somehow haven't misunderstood what I've been told.

Did you get any further with this?   

Whichever Quaife is hiding in my DSG box, it's a fecking good 'un!!

Wit that sentiment - I wholeheartedly agree!     

[Stiggy]

Nice to see the quaife is fixed RR and glad that you are enjoying it   Defo one of the mods on the list when i get round to it

Was the "quaife training day" at bruntingthorpe part of the package given by VWR?