I have a quick issue when tuning. It seems anytime I step on the gas, WOT, the car goes extremely rich 8.0:1. Is this because of the MAF or because of something else. I had it tuned well last year but now I am having trouble getting it to stay around 12-13:1 at WOT. My idle is fine at around 14:1. Also does anyone have a Prom or PMAS 80mm 24LB datasheet? I cannot find mine. Also I've been using just the Prom24 from the tweecer files, is that a good replacement?
Sounds like something has gone wrong You say it was tuned fine last year Usually one gets his Closed Loop tune fairly close then He goes to work on the Open Loop or WOT tune Not doing it in that order just makes for double work cause your inj values effect the Open Loop tune you just got done with when you get around to tuning for Closed Loop Briefly ... the fuel tables in our pcm's call for high 11's to 1 In a nutshell ... For WOT fuel tuning I work with the Open Loop only part of the maf curve I set my fuel table a bit fat all across the rpm range I then adjust the maf curve to achieve the commanded ratio seen on my wb from the table That allows me to easily change my ratio with fuel table values Since you are seeing 8.00 to 1.00 Something ... Somewhere ... has got to have gone wrong for you to be seeing that fat of a mixture or Your wb is outta whack Grady
So I looked through all my data and apparently the ProM24 included with the tweecer is not correct? I got the PMAS 24 cal sheet and the results were much better.
