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Discussion Starter · #1 ·
I have a 1993.5 OBDI Supra. Is there a way to monitor ecu parameters such as fuel trim?

The reason I ask is because i have VPC with the MKIII 550cc chip. I have 525cc injectors. Theoretically you should have to richen it across the board to compensate for the slightly smaller injectors. However you have to actually lean it out to have it run around stoich. Is there any way to find out if the ecu is adding or taking out fuel. This way it would be very easy to fine tune the car on low throttle.
 

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Discussion Starter · #2 ·
^^^^^
And if it isnt possible to monitor these values what is the best way to tune the low throttle.

I got the idea from this website. I am not sure if this also applies to Supras but it sounds like a good way to tune it.
http://www.team3s.com/FAQ-AFCtuning.htm
 
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