I am NOT a tuner, I just want a better understanding of K-pro. Here are my questions:

1) Why is there an Upper and Lower Boundry for Vtec? Is the upper boundry when vtec "stops"?

2) At what temp. should the Overheating opt. be set at? And what Actions are recomended with a boost application?

3)And how do you read the Lambda? I kown its the A/F but if your current lambda is 1.2 and your target is 1, do you need to add or subtract fuel?

Thanks to anyone who help with these questions. I may have a few more questions later.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boosted_K20 &raquo;</TD></TR><TR><TD CLASS="quote">I am NOT a tuner, I just want a better understanding of K-pro. Here are my questions:

1) Why is there an Upper and Lower Boundry for Vtec? Is the upper boundry when vtec "stops"?

2) At what temp. should the Overheating opt. be set at? And what Actions are recomended with a boost application?

3)And how do you read the Lambda? I kown its the A/F but if your current lambda is 1.2 and your target is 1, do you need to add or subtract fuel?

Thanks to anyone who help with these questions. I may have a few more questions later.</TD></TR></TABLE>

1)As far as I know, the vtec boundaries are pretty much so you won't go into vtec at part throttle. So this is good if you have vtec set really low b/c you won't have to worry about going into vtec just driving around or cruising.

2) I'm not real sure b/c I'm all motor, but I would imagine the setting of 220deg that's already in K-pro is probably fine. I would just have it add x amount of fuel when it hits that temp.

3) The lowest the lambda reading is around 11.5:1, so I'm not sure what you're looking at.

 

But, what is the difference between upper and lower vtec boundries?

And with the lambda, I just want to know how it "converts" to A/F? Meaning if I want the A/F to be around 12 then what should the lambda read?

Thanx for the help.

 

lower boundary = the soonest that vtec will engage and the lowest MAP signal at which vtec can engage.

upper boundary = the latest rpm at which the low cam will still be engaged and the highest map pressure at which the low cam can still be engaged.

I have my vtec upper boundary set high in order to save gas. I also bumped the lower boundary Map cutoff in order to keep it from hitting vtec when cruising and going up a hill.

 

tw lambda targetlambda
90 1.03 0.99
90 1.03 0.99
90 1.04 0.99
90 1.01 0.99

Does it need more fuel, or less?

 

If someone will tell me how to insert some of my data logging, I will try to explain what I am trying to ask a little better? I have it saved as an excel file.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boosted_K20 &raquo;</TD></TR><TR><TD CLASS="quote">

tw lambda targetlambda
90 1.03 0.99
90 1.03 0.99
90 1.04 0.99
90 1.01 0.99

Does it need more fuel, or less?</TD></TR></TABLE>

I honestly have no idea what those numbers are^

When you do a datalog, are you saving it and then opening up the sensors and graph on the same page?

 

I do a datalog then export it to Excel, excel graphs it, then I can look at it.

What does it look like when you datalog? How is it diffrent?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boosted_K20 &raquo;</TD></TR><TR><TD CLASS="quote">I do a datalog then export it to Excel, excel graphs it, then I can look at it.

What does it look like when you datalog? How is it diffrent?</TD></TR></TABLE>

When you datalog and save it, just go under "Windows" and then click on "sensors" and then go back through "Windows" and click on "graph". This should have all the sensors listed vertically on the left hand side with the graphs taking up the rest of the page. Then you just click a spot on the graph and it will show you exactly what's happening on the sensors list.

 

the lambda shows up as a number between 11 and 30 corresponding to the air fuel ratio read by the primary sensor

the lower the value, the richer you are running. 11:1 is rich. 15:1 is lean for boosted applications, you should be running in the 12:1 ratio's. if you are running anything in the high 12's or the 13's, then u need to add fuel.