i have a quick question. i've been interested in learning how to tune for the past year or so. ever since i started buying turbo parts for my civic. i never really followed up on my interest though until recently. i was just reading the how to tune an evo thread. i read it 5 times so far. anyways, i'm having a little trouble understanding what the load %'s mean. it shows up at the top of the graph. i'm just kind of wondering what all the %'s represent. and how it gets up to 200%. sorry in advance for the noobish question but its just been kinda hindering my understanding. i get everything else.... somewhat, i have a lot more reading to do.. thank you for your help

 

and what do the colors represent? i'm going on an assumption but do you match the color up with the engine load %'s?

 

hi,

the load numbers are an indication of how hard the engine is running. how much effort it is using.

so 100% roughly represents the motor as boost just begins.
30% is roughly the work it takes the motor to idle.

the colors in the chart are for glitz only, although the colors tend to deepen as the chart trends one way or the other. so no, you would not use the colors to tune too.

 

ok thank you. that helps clear things up. so does anyone know why they go way up to like 200%? whats the max that we would normally see?

 

an eight with minor mods will get around 250 load.

some guys redefine their maps when they have increased their power, as with cams, bigger turbo etc..
300 or more for a stock like turbo, but that would be a lot for an eight evo.

 

ok sweet. its starting to make a little more sense. i have kelfords sitting in a box right now waiting for spring and my bigger injectors, boost controller, and fuel pump, and tune. i would like to just start data logging it'd probably help my understanding. but after buying the car i cant even spend money on a lap top or required equipment. thanks for your help guys, keep it coming

 

Have you talked to Scheides yet? He's in MN as well and is installing Kelfords right now. He'll be tuning this week. He tuned my Evo8 with minimal mods. But he can at least help steer you in the right direction as far as tuning.

 

Engine load on the Evo ECU is scaled Absolute Pressure in Kpa. The 300 is KPa, which equals roughly 29psi relative to our atmosphere.

The colors are just for looks so you can visually see the gradients. You can even choose alternative color schemes.

PV = NrT (How it all works)

 

Your load is vacuum/ boost. Vaccum is anything up to 100%...
200% is 1 bar/14.7 psi of boost... and so on

 

thanks for all the replies guys, its cleared up alot of my questions, now i just have to wait for a tactrix cable so i can data log, im not sure if i want to practice on my evo, it was to expensive to do anything wrong, i'm sure if i take it in small steps i'll be fine, but i just dont know yet lol

 

so lets say my engine load is 250... do i leave 250 to 300 untouched?

 

Well i've been reading and reading and reading some more, I have another little question, how do you guys go about setting up a base map? Or say, I put my cams, 255 fuel pump, 750 injectors, JDM map so I can accurately log boost, and turn the boost up to about 24psi or so, thats what i plan on running hopefully. If I put all that in at once would I just take it in little steps? Or could I turn the boost up to what I want it set at? I'm still not ready to start data logging, I bought a computer now, so i'm just waiting on the wbo2 and the tactrix. But with all the reading i've been doing i've came up with these little questions, mainly because I dont want to get in over my head. I feel the flame burning so I am going to start tuning my own car, not sure when but it will eventually start happening