From the first post, the dead spot at 2500 RPM is because you're running 9.2 AFR target and probably moving the closed loop trim very lean and then it is way off when you cross 2500 RPM. The confusion occurs because the middle value is not an RPM value but a fuel map value.

So bottom line based on present knowledge:

Set the 7000 RPM value to 7500 RPM and leave the rest alone

OR

Set the 2500 and 7000 RPM values to 1500 RPM.

 

When my car transitions from closed to open loop peak, from 83% to 290% loads respectively, my A:F will go directly from 14.7 to 11.5 in about 1.0 seconds clean without knock.

Now at part throttle, when this transition is in slow motion going from like 30% load to say 100% load with throttle at about 40% or less, my A:F will take a dive from stoich to 12, then jump back up to 14, dip to 13 , go back to 14 , then finally dive back into the 11's where it finally stabilizes. Meanwhile the knock sensor is lit and load levels never really go beyond 100%. Most importantly less throttle applied exasterbates the knocking and more aggressive throttle keeps A:F less bouncy and less knock!

What is this, would Boost Enhancement play any role in this?

Does this function render a portion of the map useless or just less responsive? Should I even worry about this since my A:F is right where I want it from 4000RPM to redline? It's from closed loop to 4000RPM, especially at part throttle, that I need to fix

Thanks

 

Possibilities include:

Accel enrichment being triggered which gives an enrichment which is short lived
Lean spool stuff may be having an effect

However, the standard cars don't suffer from this problem... so which of your mods is messing things up?

 

see, but ecuFlash only gives the 2500 and 4531 values as if "boost enhancement" is enabled at 2500 and shuts off at 4531. So given that I only have those two options of things to change, what is your advice?

I want to deactivate it because I can create a fuel map that works just fine, but I'm having troubles in the 2500-4000 range and I dont want it to be because of some stupid "boost enhancement" I can lean it out myself with the maps if I desire better spool. Thank you very much for pretty much single-handedly answering all of these questions.

 

Change the map definition for the 4531 and increase the address by 2 so it reads 7000 RPM. Then alter that.

 

How do I do that??

I read all bout the lean spool, made it so ECUFlash had another option under fuel, IPW step. That was set to "224", which was suppose to be "7000rpm". I then set it to "80", which according to razorlab is "2500rpm". If I wanted to change it to 1500rpm what would I enter and am I changing the right parameter??

 

So I did this, then changed it to 1500rpm. After doing this the IPW step changed on it own. So these too things are basically the same thing, right?

 

If you change the unit to RPMstatlimit it will display as RPM.

But the scaling is 31.25 for each unit, so 1500 is 48 in decimal.

 

So IPW step and lean spool disable are the same things???

Also, if you change the boost enhancement stop address to 1284 from 1282, it makes that map, the REAL lean spool disable, which is the same as IPW step???

 

can this cause it?

 

I think so Evokid.

I suppose that enrichment map could make it bounce, yes.

 

Question .. why did you set the enrichment this way ??

I find you do not need enrichment (at least on my JDM) before 3000rpms .. infact you have to go leaner than stock ..

 

Was set by the tuner (well known) I hired back when I had to use them.

I never changed it back to normal since I didn't know howthis parameter worked.

Good thing we have people like JCS to help me out with this one


I just set the 2000 - 4500rpm on the enrichment to 1.00 - we'll see how that fixes it.

And to think I paid upwards of $1000 on tuning back then - geesh

Thanks man!

 

JDM evo 9 RS enrichment if you want a base to work off

 

From 2000RPM on, the JDM map and USDM map are the same.