NZScorch

I just got my Autech sr20de dyno'd and discovered that the torque graph is all over the place. Basically, that torque starts at 97 ft/lb and then immediately drops to 90.5 ft/lb, before it spikes to just over 100 ft/lb @ approx 3000 rpm. It then proceeds to drop to 93 ft/lb @ 4000 before it proceeds back upto 102 ft/lb @ 5100 rpm.

A mechanic thinks my ECU is causing the problem. Has anyone got any idea what's causing this?

Mythril1

Slipping clutch?

NZScorch

The clutch doesn't appear to be slipping. I've got a borrowed ECU to test within next couple of days and I'll see what that does.

Here's my dyno .

Stephen Max

That amount of torque variation isn't unusual. It looks worse than it is because of the narrow range scale used in your dyno graph, which magnifies variations. If you plotted the torque using a scale of 0-100, it would look pretty normal.

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