Lotus Elan

ECU vs rev counter

PostPost by: gav » Sun May 10, 2015 8:17 pm

Hi all
Just had a great day today sprinting thanks to the fuel injection solving all of my earlier reliability problems. The car ran faultlessly all day.
Interestingly (well to me anyway) the Tacho seemed to be lagging the ECU (emerald) - when I flawed the throttle, the gear change light (set at 6,900) came on ahead of the Tacho which was showing 6,500.
The question is which is likely to me most accurate?
I'd be interested in thoughts
One day I'll actually finish - completely - one day....
User avatar
Third Gear
Third Gear
Posts: 487
Joined: 26 Jan 2004
Location: Hertfordshire UK

PostPost by: PeterK » Sun May 10, 2015 8:49 pm

The Emerald ECU, almost certainly, which I guess I s counting the pulses directly from the crank sensor.
User avatar
Third Gear
Third Gear
Posts: 319
Joined: 03 Jul 2012
Location: Fleet, north Hampshire, UK

PostPost by: AHM » Sun May 10, 2015 11:58 pm

Accurate and rev counter need not be mentioned in the same sentence as ECU.

There is an adjustment pot in the rev counter so that you can "calibrate" it. There are also several tachometer and strobe apps for your phone (unless that is still attached by a cable to the wall :wink: )
Coveted Fifth Gear
Coveted Fifth Gear
Posts: 1493
Joined: 19 Apr 2004

Total Online:

Users browsing this forum: No registered users and 0 guests