The additional power is almost exclusively a result of additional timing, provided by look-up tables, that can be ADDED to the final timing advance if the OAR sees no instances of detonation. The tables don’t really provide additional boost (more airflow) due to higher octane. I could throw some ECU tables uphelp illustrate it, but it’s way more involved than “hey, no detonation, let’s add timing”.
I do. I tune lots of different platforms, and certainly believe we collectively make a small detriment to ambient air in some locations/conditions. I agree with keeping the emissions from the tailpipe clean, or as-certified in most driving modes, minus heavy acceleration and WOT (where additional fuel is typically faster/safer). Nothing wrong with that. At lower engine speeds/loads, dumping a bunch of extra fuel is usually just a waste of money. In the end, we have a responsibility to our sport to do what we can to keep negative publicity from harming our form of recreation. Spewing black smoke isn’t helping our cause (much like street-racing, burnouts at the car meet and diesels rolling coal).
So an asthmatic kid, in a car behind a diesel “rolling coal” is getting “zero effect” (Affected) That’s the most ridiculous thing I have heard (today). Now if you want to say that the small number of vehicles don’t contribute to global (non-local or “point source”) air quality issues, I would agree that the contributions is very, very, very small in comparison to all mobil and point source emitters and even Mother Nature itself. Localized is another matter altogether.
I agree. High octane fuel dictates a higher compression piston and proper top end cylinder shaping to take advantage of the higher knock limit, so I think the ECU detunes the engine to use a lower octane rated fuel. Being both engines are turbos, the compression ratio is a bit lower in the cylinder due to the forced induction as compared if the engine was normally aspirated.
I am excited to see what the 2.7 performance tune will bring. 380-400hp/450 torrque would keep me from fiddling with it (if/when the aftermarket “unlocks” the PCM) while it’s still under warranty
This is not true. Just because the state doesn't require it doesn't mean its legal. It's illegal in all 50 states because it's illegal at a federal level to tamper with or delete emissions systems and has been so since the 1970 clean air act. They've only recently started going after tuning shops cause they poked the bear and openly flaunted defeats ie Diesel Brothers.
Good luck with that with the gas prices we'll have by the time actual deliveries roll around. I'm already back to crying at every fill-up and it's only May.
But the 10r60 transmission won’t be able to handle the extra horse
While I agree the 2.3L will be fine for most I wouldn't call 30 hp & 90 lb-ft "little"....especially through 4.7 gears. We haven't seen the curves yet but if I were a betting man, I'd bet the 2.7 hp & torque come in at lower RPMs as well....time will tell.
