Stock tach and DIS
Thread Starter
Joined: Jul 1999
Posts: 12,088
Likes: 125
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Stock tach and DIS
Hello,
Does the stock tach require a HV kickback pulse?
I'm seeing some strange fluxuations with the DIS box, and I'm not sure if the factory tach needs a HV kickback or if it's dying.
-- Joe
Does the stock tach require a HV kickback pulse?
I'm seeing some strange fluxuations with the DIS box, and I'm not sure if the factory tach needs a HV kickback or if it's dying.
-- Joe
Thread Starter
Joined: Jul 1999
Posts: 12,088
Likes: 125
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Re: Stock tach and DIS
I bought a BTAC2 v00 tach adapter, which is similar to MSD 8920. It provides the appropriate signal for the factory tach.
I suspect as more and more people convert to full aftermarket ECUs, DIS swaps, etc this info may be helpful.
-- Joe
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ChrisFormula355
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Mar 7, 2004 09:54 AM





