Grimace427
Well-Known Member
I wonder how all those Ferraris, Lamborghinis, Porsches, Mclarens, not to mention countless motorcycles survive on 91 octane CA fuel.
Sponsored
I know. Hey its not going to stop the progression of sales in any demographic its just food for thought.I wonder how all those Ferraris, Lamborghinis, Porsches, Mclarens, not to mention countless motorcycles survive on 91 octane CA fuel.
Man, relax a bit. I'm not buying a 350 or running 87 octane in one. Or arguing over how a ECU works. I know how it all works. I'm not totally convinced you do but it's irrelevant. Of course Ford has set this up to be able to run on lower grades of gas. And as has been said before, the efficiency of this engine far exceeds anything of the past. CR is not an equalizer for all engines. 12:1 in an LS1 is different than 12:1 in the Voodoo.The answer to your question....
No one really knows. And if they do know... there is no governing body charting it in a registry of known detonation issues for your information. Simply because the aftermath can be attributed to so many variables. ECU mods are only a part of the overall equation.
Detonation however still has to exist for any of this to compensate. And again when problems do occur it's not necessarily determined to be a detonation problem simply because.....
That would be the first mod I would look into in those areas where high octane
Or buy 2 GT350's. You can keep the second one for spare parts.
Seriously man, get out of here with this overly dramatic BS. The ECM is far more sophisticated than you are giving it credit for and the Ford engineers are far more intelligent than you.It doesn't retard the motor so you can enjoy lower octane fuel and save a few pennies on each gallon. It retards the motor to avoid the damage that is associated with running lower octane fuel in your car. PERIOD.
If you still want to run it on the lower octane fuel then the first mod I would look at (other than the e85 conversion suggested)is a Methanol injection kit... formerly referred to a water injection kits.
Not quite.I get it.
krt22, with all due respect you are just wasting your time!Seriously man, get out of here with this overly dramatic BS. The ECM is far more sophisticated than you are giving it credit for and the Ford engineers are far more intelligent than you.
They simply would not design and sell a car where more than 10% of them would end up in states with only 91.
Simply put, the ECM adjusts engine output to match the fuel available. And it absolutely does NOT have to experience knock in order to start adjusting ignition timing and/or valve overlap to change actual cylinder pressure. Every single ignition event is recorded and accompanied by a set of data, based on this data, the ECM can predict when knock is becoming a likely scenario and adjust accordingly, and of course these fault bands include plenty of margin.
I don't know when this became a discussion on mods, or about this topic at all. But the computer on the stock vehicle is not ten year old technology. Again, assuming you don't know how it actually functions, it is more than capable of monitoring and adjusting for the given inputs. It does this actively, not seconds after it sees an input.^Ford set the ECU to compensate. That's just how it works. Its done to save your investment in your car while running it on cheap gas.
I get it.
Builders can speculate on the cause based on known variables only. If you mod the engine... its all on you as the owner. Then they can speculate on even more causes.
If your engine fails due to detonation then they would need to get to that conclusion by eliminating ...... all those sensors and the ECU as having failed.
Outcomes are all that matter.
Sadly, you are correct. It's like a bad car wreck, can't help but get sucked in to look.krt22, with all due respect you are just wasting your time!
:frusty:
You and me both :cheers:An engineer can tell you exactly why something fails. It won't be too often that a root cause can't be determined in part for a failure. Trust me, it's what I do buddy.
Porsche replaced every single 991 GT3 motor under a recall, perhaps this is why!
Maybe initiated by excessive knock...who knows!Loose connecting rod bolts caused crankcase failure and engine fires.