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 Post subject: Tacho Booster
PostPosted: Tue May 30, 2017 1:56 am 
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Joined: Wed Mar 16, 2016 8:52 am
Posts: 1
ECU Model: S80 Pro
Firmware Version: 67.00
Hi!

I think this is my first post here, however, I´ve been reading for a while.

I have a project car, a BMW 2002-73, with a s50b30 engine and DTA s80 ECU. have been running this setup for quite some time and it works very well.

any how, I have been running a e36 stock Tacho together with the digital tacho output from the ECU, but after a malfunction of the e36 tacho, i decided to go with something more robust. bought a VDO viewline, However, this Tacho wants a signal directly from the minus pin from a ignition coil (Which I discovered after I bought the damn thing). This means that I need to use a Tacho booster. Found a nice wiring diagram from the DTA manual simply hooking up a Relay coil between 12v and the Tacho-signal wire between the ECU and the Tacho. Looks very neat. (see attached file)

What I would like to know if there is any additional components needed to handle voltage-spikes etc for the DTA s80?
Could the ECU be damaged just running the coil directly?
has anyone tested the setup and can confirm that this works?

thanks in advance =)


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 Post subject: Re: Tacho Booster
PostPosted: Tue May 30, 2017 3:24 pm 
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Joined: Fri Feb 28, 2014 1:03 pm
Posts: 1030
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79
Nothing else required, the wiring is accurate.

Alternatively you can use diodes instead.
Image


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 Post subject: Re: Tacho Booster
PostPosted: Wed Jan 31, 2018 2:01 pm 
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Joined: Sat Sep 10, 2011 8:20 am
Posts: 74
Just wired one today on an EP82 Turbo Starlet and works perfect


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