Tach or No Tach?

I've been installing remote starters for my company for 2 years now and have a question concerning the tach wire. I recently have been installing systems tachless. I havn't had any problems yet. Has anybody had problems with this method. Thanks. Nick

OH yeah...........99% of the time I go TACH (or Injector) on all of the RS we sell......More reliableMO

Don't Learn from Others Mistakes

You Might Be the One That Knows.

 I have installed a few different remote start units that required installing tach to an injector wire as the neg coil wire did not work but never tried tachless,

we found that with dei remote starters work just fine espically with chevy trucks,  we have had some with tach that had problems and we went to tachless and now have no problems?? dont know why??? 

Majority off my installs I'll grab tach but on comission it saves time not having to go through the firewall. I guess I shouldn't be so lazy!! Does the module sense running voltage to stop cranking?

yes you have 12 volts and when the alternator kicks in(when the car starts) you have approx. 14 volts and the starter  picks it up.  there may be a fine tune for crank time that you need to program for colder weather. but this is rare   god luck

well, the only thing thats different that i had experience on my car w/ tachless is that if my system is turned up while RS or when i jump start some else's car, the car turn off. since its voltage-sense, obviously it has to do w/ the e. so if the voltage change drastically, the RS will turn offHouston,TX

"The two most common elements in the universe are H+ and stupidity" (Ellison).

why would you have your stereo cranked up?? have not seen or heard of this being a problem.   why would you jump start someone's car with the remote start running, your already outside unless you have remote start jumber cables that do the work for you???   

Interestingly, this was a problem I faced a few months back. I tried everything possible but still my starts were successful on second try so I finally broke down and purchased some extra satellite relays that were recommended by the company that sold my alarm and RS(Omega). When I tried that, the exact same problem continued! I then learnt that my own relays would be just as good as the ones I purchased to connect to the satellite relay ports. I have been suggested to use the voltage sensing method, however the tach method should be more accurate so I stuck with tach method. Again, interestingly and contrary to what I have been told, on cold days, the car starts on first attempt against what I have been told. Also the car starts on first attempt when cold, and double take to start after I have driven it for a while, which is exactly opposite to what I have been told. To make matters even more interesting (and confusing) these happensings are mostly random, so I cannot pinpoint to any reason why it happens. Bottom line, I heard tach is better than voltage sensing but when you cannot get tach, go with voltage sensing. Just my opinion.