Tach wire for turbosmart boost controller. - Club4G Forum : Mitsubishi Eclipse 4G Forums - 2006-2012 Eclipse Authority
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Old June 2nd, 2020, 02:08 PM   #1 (permalink)
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Tach wire for turbosmart boost controller.

Anybody know which wire I can tap into for the tachometer for the boost controller? Pictures or a diagram would be great. Thanks

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Old June 2nd, 2020, 04:01 PM   #2 (permalink)
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Don’t think there is a tach wire, why would you need it for a boost controller?

Modern cars use timing and crank position sensor to determine RPM digitally
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Old June 2nd, 2020, 04:19 PM   #3 (permalink)
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Originally Posted by pcfreak4 View Post
Donít think there is a tach wire, why would you need it for a boost controller?

Modern cars use timing and crank position sensor to determine RPM digitally
Boost correct function is use to reduce or eliminate boost drop off at high RPM. Wire is suppose to go to ecu.

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Old June 2nd, 2020, 09:04 PM   #4 (permalink)
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Quote:
Originally Posted by Jayallen View Post
Quote:
Originally Posted by pcfreak4 View Post
Don’t think there is a tach wire, why would you need it for a boost controller?

Modern cars use timing and crank position sensor to determine RPM digitally
Boost correct function is use to reduce or eliminate boost drop off at high RPM. Wire is suppose to go to ecu.

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Boost drop off is pretty natural at higher RPMs

A manual boost controller is probably way easier to hook up for a car that was never boosted stock

Last edited by pcfreak4; June 2nd, 2020 at 09:15 PM.
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Old June 3rd, 2020, 08:06 AM   #5 (permalink)
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Nah, it actually can be fixed with electronic boost controllers to an extent, and I run an electronic boost controller on my Eclipse, and have ZERO desire to have used a manual controller. They are significantly worse in every way

Even wired up without the tach the electronic boost controller still wins.


There IS a wire somewhere that can be used, and I have the diagram somewhere buried in my emails. There's a company that does nitrous installs that found the wire to use for the RPM signal, and they connect nitrous controllers to it. It should work just the same for boost controllers. I was talking to them about it


UPDATE: They just used the crank signal wire at the ECU. Pin 103, green wire with red tracer. It'll give 2 pulses per rotation, same trigger wheel as a 4G63.
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Old June 3rd, 2020, 04:45 PM   #6 (permalink)
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Originally Posted by Sabertooth^2 View Post
Nah, it actually can be fixed with electronic boost controllers to an extent, and I run an electronic boost controller on my Eclipse, and have ZERO desire to have used a manual controller. They are significantly worse in every way

Even wired up without the tach the electronic boost controller still wins.


There IS a wire somewhere that can be used, and I have the diagram somewhere buried in my emails. There's a company that does nitrous installs that found the wire to use for the RPM signal, and they connect nitrous controllers to it. It should work just the same for boost controllers. I was talking to them about it


UPDATE: They just used the crank signal wire at the ECU. Pin 103, green wire with red tracer. It'll give 2 pulses per rotation, same trigger wheel as a 4G63.
https://evoscan.com/technical-vehicl...e-gt-gs-spyder found a link for our ecu pinout and what they are

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Old June 10th, 2020, 07:25 PM   #7 (permalink)
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Well I tried the 103 pin it works but you need to have a resistor on it otherwise your car won't start. For the 4g63 they recommend a 3.3k. Waiting on what resistor I need from turbosmart customer service.

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