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Originally Posted by andyr32  wots the main diffrences that this controller adds??
there is so many diffrent ones out there i get mixed up!! |
Here's some useful info as per quoted by Dave @ TTS
1) The Competition controllers (or 'Race') are not orange from the factory, there is a distributor in the USA that colours them for there own purposes. When they come from Haldex, they are either silver (standard and great for a stealthy install) or blue as per the HPP (sometimes called 'Sport') The batches often vary when we get them.
2) TTS Roadsport / The TT Shop are the sole UK importer and distributors and we supply other UK tuners with this unit. We supply the GEN1 controllers for the TT MK1/R32 MK4 and the GEN2 units for the S3 8P/ New TT and MK5 R32 - the GEN2 is a switchable controller and has the functions of all 3 different controllers (Std/Sport/Race)
3) We keep large stocks of both the units at our Bedford HQ / Workshops
4) The Sport controller is completely fluid in it's distribution of torque to the rear wheels. It's not 50/50 or 100% rear. It essentially reacts on the same input signals as the standard contoller (ABS - ESP - ACC) and distributes torque according to where it's needed. The main difference is that it will respond and act upon smaller inputs and distribute more drive to the rear when required. This gives the feel of a more balanced 'all wheel drive' car, particularly when cornering or accelerating hard. Another feature is 'flat' (car stance - rather than nose lift) acceleration from a standstill as the controller drives more of the rear wheels than standard.
5) The Competition controller is similar and is also fluid. But this controller is more sesitive in monitoring the imputs and more aggressive in switching the torque, providing a sportier driving experience.
The Competition units were originally developed for Skoda WRC team who used a Skoda Octavia 4X4 with Haldex for their Recce ( practice) cars.
Difference is that during braking it will lock up instead of opening wich is done in the normal HPP.
This will give the car more stability during braking and redusing the risk prevent single wheel lock.
For normal "street cars" it's not a good option since it will not open up during ABS braking ( safety issue) Therefore only experience drivers who are aware of this should have one.
Thread title:
MK4 Competition Haldex
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MK4 Competition Haldex 
looks like its gonna be a great turn out! 
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