CLT & TPS noise
#1
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Join Date: May 2007
Location: Cromwell, Connecticut
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So I have been experiencing some of the random RPM spike issues that have been seen by others. I have been researching and getting ready to do the Abe NB mod. Due to this thread:
https://www.miataturbo.net/megasquirt-18/misfiring-while-cruising-seems-get-worse-when-hot-46772/
I looked back at my log and found A LOT of noise in my CLT and TPS. I believe this is related. What is causing this noise and how can I fix it?
https://www.miataturbo.net/megasquirt-18/misfiring-while-cruising-seems-get-worse-when-hot-46772/
I looked back at my log and found A LOT of noise in my CLT and TPS. I believe this is related. What is causing this noise and how can I fix it?
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#17
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iTrader: (2)
Join Date: May 2007
Location: Cromwell, Connecticut
Posts: 2,606
Total Cats: 16
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AN UPDATE:
-I tried installing Abes NB input mod...it didnt work. I looked over my circuit and it looks fine. I went back to my original circuit and the car started right up.
- Separated stock and MS grounds. Made a better connection... ms has 6awg wire all the way back to the battery ground.
- Installed .22uf cap across boot jumper
I am bumed out the nb circuit didnt work. IDK why. It wouldn't crank, oem tach didn't work, ms tach showed about half of the actual value.
The CAP seemed to work... sorda. I took it for a 5 minute drive getting on boost and bringing it into high rpm. It didnt break up or anything, but the log shows there was still SOME noise. Should I try a different size cap?
-
-I tried installing Abes NB input mod...it didnt work. I looked over my circuit and it looks fine. I went back to my original circuit and the car started right up.
- Separated stock and MS grounds. Made a better connection... ms has 6awg wire all the way back to the battery ground.
- Installed .22uf cap across boot jumper
I am bumed out the nb circuit didnt work. IDK why. It wouldn't crank, oem tach didn't work, ms tach showed about half of the actual value.
The CAP seemed to work... sorda. I took it for a 5 minute drive getting on boost and bringing it into high rpm. It didnt break up or anything, but the log shows there was still SOME noise. Should I try a different size cap?
-