Finally got the time and some decent weather to do a widebandO2 run with my new headers. I was a little suprised at the results. A/F at idle went from 13.75 to 14.5. Part throttle leaned down also from 13.5 to 14.5. WOT got richer from 12.75 to 12.25. I guess the data says the headers did the most good thru the mid range even though I feel more power across the board. The thing that suprised me the most is now I,m running out of injector size(still stock). Right at 5600 rpm's in each gear a/f spikes from 12.25 to 15. When I have more time I need to comfirm this on atap by checking the injectors pulse rate.

 

im interested to see how this develops. thanks for the info

 

me too.

 

Ok, did an atap log today and it looks like what I saw on the widebandO2 is correct. The stock injectors are maxed out by 5600 rpm's. Guess some 42lbr's are the answer now.