Search:

The min app needs to be lowered for it to work in the mustang. I haven’t had luck in the f-150 so if you get it, post up.

I’d fix the truck before attempting to do flex tuning or try to reason out why it’s not working right.

First, the learned octane is not related to learned ethanol.

As for the ethanol learning, the logic basically drives the fuel trims to near-zero by modifying stoichiometry dynamically. If you...

If it's just 5-8 than that implied driver's side knock sensor issue.

Is this a Gen1/2 or 3 Coyote? Either way, the spark timing data rate is awful. You need to speed up the polling rate and possibly reduce the channel list.

The knock occurs just as the throttle...

I feel a little stupid now but I may have solved 3. Parameter ECM 2364 might have been causing the 4-5 shift "shut down" I was experiencing. I had originally figured that the 2364 parameter wasn't...

I made a math parameter to calculate the time during a cycle that the DI injector is not open. It was as follows: "(720-(SOI-EOI))/360/RPM*60*1000000". Then I graphed this vs the logged "maximum...

Ford very clearly spent some time working on open-valve injection, though never really used it. Is it possible they were limiting pfi to only work as cvi (thereby avoiding ovi). Or perhaps only...

As a workaround you could try starting up on 100% gdi.

It sounds like the pumps are missing the check valves that hold pressure on the system when it’s off. This prevents vapor lock on hot starts.

Honeslty I just did away with 3-5 skip shift. I prefer it this way. On the slow engagement, I havent tackled that. Mine is fairly slow as welll and may just be a physical characteristic of the 10r.

The Roush 10r is physically the same as the base truck. I had assumed these issues were specific to the OSID KTGV2 but I suppose it’s possible other 18-20 f-150’s could exhibit the same oddities.

I've been working for months on and off to fix some idiosyncrasies in the Roush F150 [presumably] 2018-2020 OSID KTGV2 trans logic. There some errors in the logic that can be quite challenging to...

eficalibrator, there's an OVI parameter for timing that's set to 480 deg. If you were to assume the OVI affects PFI (it shouldn't) and divide 480 by 720, you get 0.67 or 67% which is about what I'm...

At 7500 rpm, for instance, I’m consistently logging a pfi maximum value of 12 ms. The time it takes for 2 revolutions is 16 ms so I’m missing out on a solid 25%.

Thaks for taking the time to look that up, Eric.

So the pulsewidth offsets, I'm assuming this is something like calculated (or specified) time to open and close the injector? Is that hard-coded...

Does anyone know the PCM algorithm that calculates the logged parameter "PFI Injector Maximum Pulse"? I know it's not the traditional calculation of 2*60*1000/rpm, but it appears to be related to...

The cylinder pressure limit is for timing only.

The throttle doesn't go wide open until 5500 rpm. At that point it appears as though TIP desired = TIP actual, and with the throttle wide open it's all you're going to get at that TIP. If you want...

If you post a WOT log, then add Borderline Timing, MBT, Timing, and Knock Advance and make sure the data rate is high. If you're running E85 then you can generally add a lot to the borderline tables...

Which is what I said, minus the theoretical part. Theoretical means it can't or hasn't been proven. MBT can and has easily been proven. By definition, it is NOT just a theoretical number.


...

I love the flex feature but I’m afraid hpt isn’t the best software to make it work.

Be careful with flex on these. There are 9 parameters for fuel system fuel volumes that are typically defaulted to 0 lb in the m6g. The problem is that when switching fuels on a fillup, the logic...

So you have 3 issues remaining? Occasional bog on 1-2 shift, dying when coming to a stop, and low WOT timing?

If the tune is hacked together, it might make sense reverting back to a stock file...

MBT is a physical characteristic of the engine, being the timing at which it's most efficient and makes the most torque. It's not just some theoretical number. The tune should be calibrated to...