responder lc, virtual tach, and mt

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=113063
Printed Date: July 17, 2025 at 10:06 AM

Topic: responder lc, virtual tach, and mt

Posted By: joebubba
Subject: responder lc, virtual tach, and mt
Date Posted: April 11, 2009 at 3:44 PM

Can anyone explain to me why you can't use Virtual Tach with a manual transmission on the DEI Responder LC models(i.e Viper 5901,etc.)?

Replies:

Posted By: shaip99
Date Posted: April 12, 2009 at 1:39 PM

you cant use virtual or voltage sense on any manual transmission starter that ive ever worked on plus why would you find a tach line its better

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Posted By: joebubba
Date Posted: April 12, 2009 at 4:03 PM

Uh yeah, I already know that, as I said in my post. But I'm curious as to why you can't use virtual tach with an MT.

Posted By: shaip99
Date Posted: April 13, 2009 at 1:31 PM

its a safety and liability issue

virtual tach and voltage sense do not immediatly go on/off when the vehicle is turned on/off so the car wont know the car is on/off right away

if your battery is low the starter might think the car is off when it is actually running

a tach or alternator sense wire will be an immediate signal so its better and more consistant

also with voltage sense if the car is on a battery charger it goes to the same voltage as when it would be running

hope this answers your question

Posted By: joebubba
Date Posted: April 13, 2009 at 7:04 PM

So what's that got to do with a manual transmission? DEI recommends using virtual tach for auto transmissions, but the virtual tach can't be used in a manual transmission.