misfire desensitizing
Thread Starter
Safety Car
Joined: Feb 1999
Posts: 4,043
Likes: 342
From: Central NJ
misfire desensitizing
Guys,
So I always had at least one cyl showing a higher misfire count then all the rest. I had this for the whole life of the car and I had it a LOOONG time. Now, this is seen in HP scanner and never had any codes. So I mentioned it when I was getting my car tuned SD for my SC and when I got home I never see any misfire count move from zero. So I figured my tuner went in an raised some of the misfire tables, BUT all tables are completely stock...So is there any other parameter that would make the misfire count from registering? I cannot seem to figure it out....
So I always had at least one cyl showing a higher misfire count then all the rest. I had this for the whole life of the car and I had it a LOOONG time. Now, this is seen in HP scanner and never had any codes. So I mentioned it when I was getting my car tuned SD for my SC and when I got home I never see any misfire count move from zero. So I figured my tuner went in an raised some of the misfire tables, BUT all tables are completely stock...So is there any other parameter that would make the misfire count from registering? I cannot seem to figure it out....
Melting Slicks
Joined: Nov 2013
Posts: 2,048
Likes: 315
From: USA
Probably because failed MAF mode was designed to be a fallback/safety limp mode kinda thing. I didn't realize misfire detection didnt work in SD either, but good to know. My misfire limit tables were maxed out when I got a cam, I was thinking about going back and start bringing them back to sane values, but it would have been a wasted effort.
One time I did attempt to monitor misfires on my Aeroforce gauge and it was 0 across the board, I figured the thing didn't work but it was probably because of the SD tune. learn something new every day.
One time I did attempt to monitor misfires on my Aeroforce gauge and it was 0 across the board, I figured the thing didn't work but it was probably because of the SD tune. learn something new every day.
Thread Starter
Safety Car
Joined: Feb 1999
Posts: 4,043
Likes: 342
From: Central NJ
Probably because failed MAF mode was designed to be a fallback/safety limp mode kinda thing. I didn't realize misfire detection didnt work in SD either, but good to know. My misfire limit tables were maxed out when I got a cam, I was thinking about going back and start bringing them back to sane values, but it would have been a wasted effort.
One time I did attempt to monitor misfires on my Aeroforce gauge and it was 0 across the board, I figured the thing didn't work but it was probably because of the SD tune. learn something new every day.
One time I did attempt to monitor misfires on my Aeroforce gauge and it was 0 across the board, I figured the thing didn't work but it was probably because of the SD tune. learn something new every day.
