Maximum acceleration from a TDi

[Will]

Quite a few members have had their car's on a rolling road, usually after a remap. But it's not always easy to tell from the power/torque curve when to change gear, especially since the test is only done in 4th gear.

So if you've wondered what is the optimum rpm to change gear for maximum acceleration in your TDi then this article might be of interest.

http://autospeed.com/cms/A_109402/article.html

I'm not thinking of traffic light burnouts, but just about safe over taking and making progress on the road.

Especially in a turbo diesel car with a peaky power curve and lots of bottom-end torque, finding the optimal gear shift points can make a real difference to on-road performance. You can’t easily calculate it from a dyno curve of engine power but you can do it by using a simple and cheap instrument, on-road testing and the services of an assistant.