Thread: Some of my Scans

Originally Posted by Lawngoose

. I still get knock... so I am thinking that I need to richen the lower part of the MAF table.

Your LFT's are Negative Around -4 to -5 during your cruise. What makes you think you need to add fuel?

Originally Posted by Lawngoose

. Now the debate... Many ppl will say to tune your LTFT's to - values. The reason being that you are running rich and the pcm is removing fuel. The other end of the argument is to tune your trims + .. so the pcm is adding fuel. However, if you adding fuel... your already running to lean right?

Pulling fuel at WOT (negative valve) is something you DO not want.

Originally Posted by Lawngoose

. Im going to do another scan tomorrow morning (when temps are colder) to see what happens on another MAF adjustment. However, I do have a question.. if my fuel trims are + and I wanted to manually adjust the table to make them - ...wouldnt I reduce the table values??

I see Negative LFT's (Cruise.) Going off your last scan. Do not take into consideration the Plus 8 you see on deceleration or the Plus 3 to 6 you see at idle

Originally Posted by Lawngoose

I have virtually no knowledge about timing changes...other than using eddie's tool to change timing on WOT runs when you get KR.... so any info is appreciated.

Im not sure on DHP but on HPT its in the last table line on the spark table