Dyno Chart

I have been fairly busy with work and travels and apologies for not updating the blog frequently. Below is the dyno curve from my last dyno session after running in the engine. As you can see the torque curve is a little wonky and there is a slight dip in torque and power around 5.5k rpm. This is the rpm that a lot of knocking is encountered, due to the engine characteristics, cam profile and also maybe due to the ITB length. The timing has been backed off a LOT at this area and my knock sensor still occassionaly triggers at this rpm on full throttle at high load or on a very hot day.

I have installed my larger 2.5 in exhaust which I will blog about another day, and this seems to have improved this which I am very happy about. I hope to have the water/methanol injection to come in around 5.5k rpm onwards to help with knocking issues and possibly run more timing.

Apologies for the quality of the dyno chart as this what happens when you have two young kids who get hold of your dyno sheet and decide to have some fun. Manage to stop those two rascals before it got shreded to hundreds of pieces.