Recent content by engineermike

Assuming .95 load, 7250 rpm, mapped point 23, no corrections for lambda, coolant temp, charge temp, or anything else... MBT is 27.05 Cyl pressure limit is 30 Borderline knock is 19.79 Knock max adder is 10 So, ultimately MBT will limit it to 27.05 deg if it never knocks. That said, you're...

What year and model?

The problem with that system is that it ONLY accounts for the different stoich of ethanol, and nothing else. You don't get additional timing beyond what knock-advance your tune builds-in, nor the very long list of other changes that should be made when running ethanol.

I don’t think anyone knows what “tab” you’re talking about. Pic?

@Mikepol2 you don’t need much fuel system to run ethanol and boost. I’m actually running a stock pump on an 18v bap in my truck, 2.8 pulley on a Roush. Stock 47# injectors too. You can get away with a lot less than the tuners might have you believe. You’d only need the $175 version of Pcmtec...

Eh, make your own tune? That's what I did. There are several on the forum that made their own flex tunes using PCMTec with success.

The root of the problem is that HPTuners doesn't have all the necessary parameters defined to make it work. PCMTec does, but the big tuners seem to prefer HPT. One example is the flex lost fuel tables. Lost fuel are the tables that tell it how much fuel doesn't participate in combustion...

The gen3 in the f150 was very nearly the same engine and ford supplied it from the factory with flex fuel. If there were any legit concerns about it, ford wouldn’t have offered it. Some of us have enabled ford’s flex logic in the mustang. It works amazing; I’d wager better than most dedicated...

In my opinion, on his car it was more of a necessity than an option. He has some pretty big Comp cams so the SD model was grossly inaccurate. The most obvious effect was that the inferred baro was way off, which threw off everything else. "Big Tuner" basically just locked down inferred baro...

Yes, @tdstuart did something similar, except he went into the imrc position sensor instead and used an adapter harness. I think it took us 25 logs and revisions, give or take, to tune his sd model. That was using just 4 mapped points and isolating each one for tuning, using a home-brew sd...

Correction, I follow the OLM, which is typically 10k miles or 1 year whichever is first. However, with a proper flex tune it does automatically derate the oil life as a function of ethanol.

2018 GT, E85, 18 psi boost, 65,000 miles….drain intervals at 10,000 miles or 12 months, whichever comes first. It uses about 1 quart per change.

They also can get clogged up and cause the very problem they’re there to prevent….

This is why I tune my own. I get to decide what I will tune for.

Yes, resistance to change and some level of laziness. Why develop new better stuff when you can keep selling the same thing since 2012? Fore and Lund are dinosaurs stuck in 2017.