Bobby Singh

Hi all,

I've managed to get my hands on a set of efi dials and now the revs dial actually moves lol however it's no ways correct, it appears to be over reading by 1500 rpm on idle (so showing 2500 rpm @ idle).

Any thoughts??

Cheers
Bobby

Bobby Singh

flashpoint

I'm guessing you have converted the car to run EFI

Steve

Bobby Singh

Yep running ofab management

Oranoco

You need the counter from an EFi XR3i or Orion 1.6i Ghia. The Efi system uses a wasted spark (sparks twice on each stroke) this makes the non EFi tacho over read by about 2x

flashpoint

Strange 'You would of thought it would of read correctly'

One way, ‘before you swapped over the clocks’ would have been to run the original rs rev counter by taking a wire from pin 11 on the EDIS unit to the rev counter
As this is a clean rev counter sig, and would have read correctly

But it’s a bit late now

Cheers


steve

andyhardy

Forgotten to put a suppressor on the rev counter wire?

Only thing that I think it can be, unless you've got another problem with the wiring itself.

Andy

Oranoco

Just read that you have EFi dials so I'm a bit stumped as to the over reading

Bobby Singh

Thanks for the replies.

I cant work it out either to be honest, with the mfi dials the rev counter use to under read so on idle it use to so 500rpm.

mathewwebber

got the same problem on mine and am looking to get an efi rev counter. i have the old mfi rev counter that wont go above 2k as i have a frst engine

flashpoint

Try running a wire from the EDIS unit to the rev counter, it fixed it fo me

Cheers


Steve

xr4x4rs

iTrader: (5)

does it stick at 2500 all the time?

or just on cold start

as ive just converted a caby to efi using efi rev counter

and on cold start it ticks over at 2500 but then drops down to 900 when starts to warm up

Bobby Singh

No doesnt stick at 2500rpm..at cold start its around 2500rpm and then when it warms up it drops to about 1500rpm..