Help on tuning partial throttle

ITR 1102 · Post by **ITR 1102** » Fri Jun 22, 2007 6:25 pm

It has been almost a year since I did this last and I need a refresher.
I have uploaded a pic of the low speed fuel map. I know that the 4 blocks move together as the ecu sees different rpm and load.

My question is, when I am loading the dyno to tune partial throttle, how do I determine which ones to tune, or do you literally check each cell in the map?

planetspeed · Post by **planetspeed** » Tue Jul 03, 2007 10:04 pm

That's why Hondata has the datalogging option to point you where you are in the map.. Goodluck!

http://www.hondata.com/partthrottle.html

ITR 1102 · Post by **ITR 1102** » Tue Jul 03, 2007 11:50 pm

The link is dead, but I am not quite sure what you are talking about.

I can watch it in real time as we tune, but I don't remember which cells / blocks need to be checked, or if every single cell needs to be tuned.

planetspeed · Post by **planetspeed** » Wed Jul 04, 2007 6:29 pm

Are you tuning in a dyno with a tuner?if yes, your tuner knows which cells to touch based on the dyno sheet..record your datalog and review it after a pull so you'll know where to make adjustments..your tuner should know best..

click here:(then scroll down to tuning guide;its all there)
http://www.hondata.com/stech.html

ITR 1102 · Post by **ITR 1102** » Wed Jul 04, 2007 7:19 pm

Well, I did have a tuner before. He is now out of the game, but he is very smart and spend a lot of time with me to teach me how to tune. He tuned mine and my friends type R on the same day.

Thank you for that link. I have never seen that before and that is exactly what I was looking for!

planetspeed · Post by **planetspeed** » Thu Jul 05, 2007 6:10 am

Tuners are equally good but they differ on the ecu's they're used to tune.Tuning two cars in a day with Hondata is just a testament of its ease of tune and user friendliness, assuming you know what you're doing..I just saved Spunkster and Hondata some time to answer replies..Just tune on the safe side.Goodluck!

ben · Post by **ben** » Thu Sep 20, 2007 3:13 am

The map trace box is an approximation of where the ECU is referencing the base value tables for fuel and ignition timing output. You can tell which one the ECU is closest to by looking at the actual numeric values for RPM and manifold pressure.

I usually just force it to the value closest to a particular cell and work on that cell. This only works when you constant load the motor at that RPM and load point until it settles the air:fuel ratio.