[Chethan B G]

Found this interesting: http://pics3.tdiclub.com/data/5923/T...sentation1.pdf

It states the variables WRT EA288 engines with different tunes. Will be interesting to know the actual differences in TC and Inter-cooler for 2017 Tiguan, Superb, Passat and A4.

What is the torque rating of 4x4 Haldex system used in a Tiguan? 7 Speed DSG can take up to 600Nm of torque. The towing capacity of this vehicle is rated at around 1000 Kgs.

Can this engine be tuned to a rating of 190 Ps / 400 Nm without any hardware changes in a Tiguan? Stock engine tune is 141 Ps / 320 Nm. Does not matter if the towing capacity comes down with the increase in HP.

Any comments are welcome! Thanks in advance!!

[avinash_clt]

Originally Posted by Chethan B G

What is the torque rating of 4x4 Haldex system used in a Tiguan? 7 Speed DSG can take up to 600Nm of torque. The towing capacity of this vehicle is rated at around 1000 Kgs.

Can this engine be tuned to a rating of 190 Ps / 400 Nm without any hardware changes in a Tiguan? Stock engine tune is 141 Ps / 320 Nm. Does not matter if the towing capacity comes down with the increase in HP.

On the 4th Gen Haldex system used in a Tiguan Mk1, the torque rating of the haldex clutch pack is 2400Nm. But do note that, haldex receives power/torque from the gearbox at the front, so there is a torque multiplication based on gear ratio (and guess the final front diff ratio also). Additionally, owing to the limitation of the haldex design, only 50% of the torque can be sent to the rear (under ideal conditions) and rarely does this scenario pop up, it is almost always lower under normal road usage. Furthermore haldex design can't continuously transmit power/torque to the rear as it requires continued slipping of the clutch packs.

Thus there was almost always sufficient room for reasonable bumps in power/torque without touching the haldex unit. So concerns if any will be limited to lower gears and significantly higher outputs than stock. Some claim that engagement of the rear axle tend to become less seamless when the stock power is significantly bumped (but that could also be related to the quality of the engine/dsg remap). Furthermore for those wish to override the stock logic of the Haldex controller, custom remaps/controllers are also available.

Tiguan Mk2 should be having the gen 5 Haldex system. If the torque limitations of the clutch packs from gen 4 are retained, then there shouldn't be a limitation in remap levels you are looking at.

[speedracer05]

Thanks to OP for this wonderful thread, I learnt a lot!
Sharing a few things I learnt, taking to people at wolf performance.

1. Though Octavia, Superb, Q3 etc have same engines, they definitely have different turbo chargers, intercooler etc components.
2. Wolf tuning increases torque/bhp by increasing both air intake and fuel intake when needed. This also means tuned ECU utilizes tubo earlier and at higher capacity, while keeping it within specified tolerances.
3. They also mention that in case of Octavia TDI, stock intercooler would reach its limit before stock turbo or stock injectors would, which was interesting. I often see people suggest turbo and injectors as the next upgrade, but it may not be that simple.

[speedracer05]

Differences in various TDI engines very well explained -

https://www.youtube.com/watch?v=4D9b...nel=TorqueCars