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Little bit longer log here with some driving around the block. Car seems to be starting in 2nd and 3rd and shifting completely at random.

The customer also reports that the...

Customer has a 2010 4.6 A6 Mustang that recently installed a 3000 Stall TCI converter. After installing, he is now getting a P0720 and the car is going into ETC FMEM limp mode when a load is applied...

I have an older one that uses the 4.2 Bosch sensor, I don't even remember the part number tbh lol

How much to reflash for improved serial poll rate and resolution?

Pretty sure I have that same, or at least, nearly identical inverter

HPT will always recommend against it, but I have been doing it for years with all 3 of my modules without issue. Literally thousands of hours logging and writing tunes, all on inverter power

Agreed. Adjust your shift points so that you stay in a lower gear (higher rpm, less boost)

Looking at your log, you're constantly pretty deep into boost and the PCM is using fuel enrichment to...

It seemed like a neat idea to me initially years ago, but after dealing with this, knowing that a simple logic error could potentially ruin an otherwise perfectly working engine is absolutely...

I gave it a shot last week. Cleaned the sensor really well, then spent about 3 days re-calibrating it. It threw off my transient fueling a little bit, as I had lean tip-in after enabling it again. It...

That's exactly what this was. A 100% factory truck down to the air filter. Virtual Flex was set up from the factory. I couldn't even figure out what was wrong with it at first until I saw stoich at...

Return style, yes. And I'm running the LS3 card-style maf already, it's blow-through with a large 1" honeycomb flow straightener about 4" upstream

It's disabled because I keep hitting the airflow limit (512 g/s) and I occasionally get erratic readings from it like it's seeing turbulence. I used to run a blended tune, but have had a much better...

I'm worried it may have been too late and he's already shattered a ringland. After disabling flex fuel, it still has a rough idle, misfire and is down on power.

Has anyone seen a factory virtual flex fuel setup go awry before?

I had a customer bring back a 6.0 GMC Sierra today that was tuned last year.

The engine was pinging, mostly under medium load,...

You're right. After re-enabling the MAF, the car ran like shit, but stayed in open loop like it should. Is there no way to run OLSD on an E40 with a failed MAF then?

Any DTCs?

If your tune is correct - no, it'll be fine

Hey guys,

I'm having trouble getting my E40 to stay in open loop and a separate issue where I cannot get commanded spark below -10*.

I have closed loop ECT and delay maxed out, but the vehicle...

PE is working perfectly fine. It's just underestimating airflow by about 15-20%.

You need to tune VE and/or MAF

So the customer recently got back to me. The tune in his viper does NOT pop at all. Furthermore, there is a "Rocket Racing Products" sticker on the PCM itself - he sent me a photo of it.

They definitely do. I added some to the gain on a P59 in an 04 GTO a couple months ago and it made a clear difference in response

Ah yeah I never noticed that on P59 before. Not sure how that works then

Start logging Intake Valve Temperature and pay VERY close attention to where those lean spikes are. This isn't something you're going to conquer in a day, a week, or even a month. I've been dialing...

You got it.

Math. If 640 isn't explicitly defined, then you'll have to solve for the value

The closest value in your table is 648, which is 48.1. So your value at 640 should be slightly less than that 48.1...