quick noob diypnp wiring question: EBC and TACHOUT - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 01-25-2012, 07:42 PM   #1
Junior Member
Thread Starter
iTrader: (20)
 
Join Date: Apr 2010
Location: Redmond, WA
Posts: 494
Total Cats: 15
Default quick noob diypnp wiring question: EBC and TACHOUT

Car is a 94 with cops. DIYPNP. Going to use the tachout and unhook the tach signal from the cops

I am trying to wire up my TACHOUT directly to the tach as I am suspecting some stock wiring harness gremlins. I want to hook up the TACHOUT to the DB15.

Also, while I had the diypnp open, I noticed the EBC OUT pin had nothing connected to it. This a brain built diypnp. Should this OUT pin be hooked up to a pin on the DB15 also? As of right now, the IN is soldered to PA0

I've circled where I think the wires should go, but any help would be great! I didn't really get exactly where the TACHOUT was so I just circled an area I thought the TACHOUT was at (already have the diypnp back in the car for now)



Attached Thumbnails
quick noob diypnp wiring question: EBC and TACHOUT-20120125_151716.jpg   quick noob diypnp wiring question: EBC and TACHOUT-20120125_151915.jpg  

Last edited by bmxfuel007; 01-25-2012 at 11:01 PM.
bmxfuel007 is offline   Reply With Quote
Old 01-26-2012, 04:23 AM   #2
Junior Member
Thread Starter
iTrader: (20)
 
Join Date: Apr 2010
Location: Redmond, WA
Posts: 494
Total Cats: 15
Default

oh yeah, so I've also upgraded to the 3.2.1 firmware.... which has changed all of the pinout names.... great. Before the Tacho Output used to have a pin that said TACHOUT. Now it's....... D14 ? is that right?

referring on this page:
http://www.msextra.com/doc/ms2extra/...htm#ms2options

I really have no idea.
bmxfuel007 is offline   Reply With Quote
Old 01-26-2012, 09:40 AM   #3
Supporting Vendor
 
Matt Cramer's Avatar
 
Join Date: Sep 2006
Posts: 2,266
Total Cats: 51
Default

Yes, D14 = Tach Out.
Matt Cramer is offline   Reply With Quote
Old 01-26-2012, 10:59 AM   #4
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,793
Default

TACHOUT already appears to be going to your harness, maybe try turning it OFF in the software.

hook the EBC OUT to any of the DB15 pins.
Braineack is offline   Reply With Quote
Old 02-04-2012, 05:26 AM   #5
Junior Member
Thread Starter
iTrader: (20)
 
Join Date: Apr 2010
Location: Redmond, WA
Posts: 494
Total Cats: 15
Default

Thanks for the info guys. Got everything working and finally to the dyno.

The TACHOUT was already hooked up, however my stock wiring must have some ground issue or possibly even a short somewhere.

These WERE my symptoms:
-STOCK coils, 3-4k rpm erratic tach
-COPS, idle AND 3-4k rpm erratic tach
-resistor connection in the diagnostic box did nothing, connected or not. must have pullup already

-COPS tach signal disconnected- tach still worked... LOL
-COPS signal disconnected, TACHOUT ON, tach still erratic

-bypassing stock wiring with TACHOUT wired to DB15 in DIYPNP, wire going directly to back of gauge cluster, steady TACH at all RPMS

Thanks again guys!
bmxfuel007 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 AM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 08:39 PM
wiring wideband ground to battery terminal btabor ECUs and Tuning 10 09-28-2015 06:33 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:07 AM.