Going from BE to TunerPro

Decipha's custom GUFX strategy covers all 89-93 foxbody ecu's including the 88 mass-air california ecus.
bad86capri
Posts: 163
Joined: 2021 Feb 16, 10:09
Location: Knoxville, TN
Vehicle Information: 1986 Capri 306, Twisted Wedge heads, RPM II Intake, Anderson B3 cam, 80Lbs Siemens Injectors, MAC Longtube Headers, G-Force T5, Spec 6 Puck Clutch, Ford Racing Aluminum Driveshaft.

Going from BE to TunerPro

Unread post by bad86capri »

Im getting ready to move my tune back to tunerpro. When i transfer my maf curve to tunerpro will there need to be any adjustments made or should it be correct like it is in BE? Not sure if theres any differences in the math that both software use.
decipha
Posts: 4954
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Going from BE to TunerPro

Unread post by decipha »

tunerpro with the k constant uses all unscaled actual values so if your tune is scaled you'll have to put the actual unscaled values in.
bad86capri
Posts: 163
Joined: 2021 Feb 16, 10:09
Location: Knoxville, TN
Vehicle Information: 1986 Capri 306, Twisted Wedge heads, RPM II Intake, Anderson B3 cam, 80Lbs Siemens Injectors, MAC Longtube Headers, G-Force T5, Spec 6 Puck Clutch, Ford Racing Aluminum Driveshaft.

Re: Going from BE to TunerPro

Unread post by bad86capri »

My tune is not scaled. Can you explain what the K-constant is? And is it a new feature in the a9l2 bin?
decipha
Posts: 4954
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Going from BE to TunerPro

Unread post by decipha »

read the fuel and the a9l2 write up its all in there
dleach1407
Posts: 468
Joined: 2021 Mar 21, 15:17
Location: Colorado Springs, CO
Vehicle Information: 95 Mustang GT, CBAZA Quarterhorse
331, 190 11R heads, Edelbrock Victor 50 manifold, F303, T5, 76mm Turbo, 91 octane, Returnless dual pump 03 cobra tank, Behind bars rails, 80# siemens injectors
wbo2_030MtxL

57 F100, RZASA, 04 Crown Vic ecu and harness, 302, GT40 heads, 4r70w, 80# deka5 shorties, Holley carb style throttle body, Speedmaster high rise intake manifold

Re: Going from BE to TunerPro

Unread post by dleach1407 »

from another thread:

"The K-Constant is a global fuel modifier. It is the single most important value in the ecu and is the twin sibling to the injector high slope. The K-Constant should always be set to 30 lbs/hr as that gives the maximum resolution in the ecu for any tune. Why 30? On eec-v the injector slopes have a maximum value clip based on processor speed and 30 ensures you dont butt up against any of those clips including when deltap modifiers come in to affect. Also 30 lbs/hr of fuel pegs the injector duty cycle just under the airmass clip of 64 lbs/min (~1750 kg/hr) which is the maximum airmass clip on eec-v, some powerpc and even some other oddball 4 cylinder and 6 cyl applications. And to even furthur that on returnless fuel systems 30 moves the maximum fuel pump flow rate just past 4 (the maximum the ecu can calculate) so there is no longer a fuel pump flow rate limit when dialing in the fuel pump voltage. So in summary a k-constant value of 30 is the absolute perfect value for the ecu to no longer have any fueling, airmass or fuel flow limitations with the absolute maximum resolution possible. Its also a nice and easy to remember whole round number. The objective here is easy.

As a side bonus you can very easily see exactly where the injectors and maf peg out now without having to calculate it simply by looking at the maximum airmass possible in any of the SP** airmass functions. Simply divide your maximum airmass your reaching at wot by that and you know how exactly much headroom you have just that simple. It might not sound like much but it makes life significantly easier when turning up the boost later down the line not having to question if your going to peg something. One more reason the K-Constant needs to be set to 30 is that the rwhp and rwtq values calculated in my adx are based on that. Even though they are not accurate they rely on that value for a baseline as everything my adx self calculates in tunerpro is based on the K-Constant not changing.

So as you can infer changing the K-Constant will change the entire foundation of the tune. If your K-Constant on an existing tune is anything other than 30 then you will need to verify you did not clip the injector maximum slope value with the deltap modifiers taken in to account. If you hadn't then the easiest way to do that on an already dialed in existing tune is to just change the WARNING!!! INJECTOR HIGH SLOPE scalar to your existing injectors UNSCALED ACTUAL INJECTOR HIGH SLOPE value from the manufacturers published data sheet and save that tune. Now if you go look at any of the SP** values in your tune its going to show you what your actual unscaled values that are currently in your existing tune. If any of those values are incorrect then your tuner did not scale your tune properly. Your K-Constant wont be at 30 as it should be at this point but thats fine for now.

If your slope did exceed the maximum slope clip then you need to re-dial in the tune from the top down. More on that if someone requests it as it can get tedious to explain.

Now open up the compare with the same newy saved file comparing against itself and it will show 0 changes.

Go through the steps in the exact order outlined on the A9L2 write up MANUALLY selecting all and copying and pasting the values from the existing saved tunes compare as you go through the steps. You will now end up with a properly configured tune.

On all fords changing the high slope changes the entire tune. Its the same as its always been just more prevalent now."
bad86capri
Posts: 163
Joined: 2021 Feb 16, 10:09
Location: Knoxville, TN
Vehicle Information: 1986 Capri 306, Twisted Wedge heads, RPM II Intake, Anderson B3 cam, 80Lbs Siemens Injectors, MAC Longtube Headers, G-Force T5, Spec 6 Puck Clutch, Ford Racing Aluminum Driveshaft.

Re: Going from BE to TunerPro

Unread post by bad86capri »

Thanks. I didn't realize that fuel write-up had been modified.
Post Reply