Tuning Injector Slopes
 

I am ready to start finally dialing in my KAMRFx's and get my gas mileage/performance back where it needs to be. Just like a good little tuner I have been clearing my EEC each time I make a fuel control change, but I have a concern that I need addressed.

In the EA documentation regarding tuning injector slopes, it states that you need to set your breakpoint to some unobtainable number and "accelerate very slowly" in order to keep the EEC on the low slope side. Purpose of this is to tune the slope between 0-3ms.

Since I've got an EEC-V with adaptive strategy enabled I usually drive the car a couple of days after making a change to make sure the KAMRF tables have learned their proper corrections. So can I just change my breakpoint without clearing the EEC and datalog, or will I have to drive like a grandma for a couple of days to allow the learing process?

Re: Tuning Injector Slopes
 

I need to rework that help file. Since you have the EEC-V, the new version of the EA can calculate the slopes and breakpoint without having to do what is described in the help file.



Goto the injector slope tab and select the "PW vs Required Fuel" option. Now select the settings button on the injector slope tab. Choose the automatic option and enter in the actual injector size.



Make sure to leave adaptive on and filter out any outliers in the datalog. What I mean by outliers is things like 16000RPM and so on.



This procedure will find the best fit for you delivered fuel. It will not get rid of the hills and valleys in the KAMRF. The hills and valleys have to be removed by modifying the MAF curve directly.



To increase fuel mileage, note where the car run at cruising speeds such as load and RPM. Now go to the fuel tables and make sure there are at 14.64. If they are not you can modify the sea level load scale or adjust the fuel table.

Re: Tuning Injector Slopes
 

Awww, cool. Thats a new feature since the last version. That is awesome! Thanks Clint!

Re: Tuning Injector Slopes
 

I uploaded the latest last night. It now save all chart settings for all charts. It also has a better refresh rate on the charts. It has a slew of new things.

Re: Tuning Injector Slopes
 

does this mean that I may be able to get some fuel economy out of my 93 again :banana:

Re: Tuning Injector Slopes
 

You could if the AFR is dialed in for the cruising range.

Re: Tuning Injector Slopes
 

Nope, I didn't see the El Destructo automatic option. Sorry. :jester:

Re: Tuning Injector Slopes
 

:rofl:

Re: Tuning Injector Slopes
 

:slap:

Re: Tuning Injector Slopes
 

FWIW guys, you don't need to dial in the afr in CL unless you are past the adaptive range of the eec for some reason (bad maf curve). 14.7 is what you are going to get no matter what if you are reasonably close on your maf. If you have aftermarket cams then you can help gas mileage by adjusting injector timing which Clints program will do for you.
Bob