Thread: How to make your fuel and timing maps AKA "TP/LOAD" scales

Thanks for laughing at me bastard !

Should we ban him?

Fixed for truff

Don't even pay attention to the boosted area of my logs this is a naturally aspirated MAP sensor (1 Bar) from the 1999 P11 G20 part number 22365-9E010 i would only pay attention to just up to1 psi of its readings if that.

Well you have to consider how Nissan defines things too. On all ECU's you have RPM and Engine load, and that's how you determine fueling/timing. While Nissan TP is not a technical engine load, in Nissan world it is. Because that's how Nissan determines how much fuel/timing to give (with RPM as the other axis).

Best thing to compare TP to is airflow, because MAF voltage changes depending on how much air is flowing. Problem is, because there are so many calculations involved, your TP could be down yet your MAF voltage is still up (I will confirm in my logs, perhaps MAF V goes down too?)

None of you all are going to figure out the formula for calculating TP and madd props if you do buts its not important but what is that is your AFR's are consistantly incorrect where a commanded 10.5AFR = an actual 12.5AFR, but its not hard to get these comamnded vs actual AFR to match up pretty closely.

There is nothing conclusive to draw from those logs. There is no point where you hold a steady TP, or hold a steady pressure reading while also covering a wide RPM range.

Get the 3-Bar MAP sensor in there, and fix your TPS issues and you'll see why we are all skeptical.

WOW you really have no clue im really convinced, im done here the proof is there maybe one day you'll catch on. Those vacuum logs are perfect examples look at the repeatability treat these logs like if the car was naturally aspirated like I said the map sensor is not designed for measuring boost its a 1 bar sensor, and the reason its hard to stay in a vacuum range is becuase im boosted, onecan easily conculde from my logs that my zero boost zero vacuum is rought ~46TP


Let me ask you now how do you determine how to set your TP scale, no body has a better way then doing this than me, not bragging or anything like that just stateing the truth, im here shareing with you guys because many people are clueless when it come to what and how to set your TP scales up.

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How about you share your knowledge on how to set up TP, can you even do that?

No thanks. =]
A duck is a duck.

Im sorry my car just wont pull a log @5 6 7 8k with a T28 on it and show -1 vacuum so I could show you repeatablity and no car should unless its freaking dyeing