I have ran the BMP stage 3 tune for almost 2 years and it hog's the fuel as well .. You may see a very slight improvement in MPG with the BMP stage 3 vs AA stage 3 ... but it will be very little ...but the difference in performance is noticeable , the AA is definitely higher performanceThanks Huhner5. Stage 3 et? yea, that explains things too. Timing tables probably changed, fueling, even boost levels. Yep, I get it.
Whose tune are you using?
I just picked up another set of PV tunes from Bikeman. I was talking to Joey about how the AA tunes suck fuel and he convinced me to try their's. My take is their tuning style is less likely to see such crazy fuel burns...
Wow! That's a lot! Redline would call that maybe 4 octane numbers and maybe 2.5% power loss. Damn!I've seen as much as 6* of timing being pulled out of mine... junk 91 octane on a stage 3 tune (aftermarket assassin's)... Still safe according to Mike @ aftermarket assassin's but leaving considerable HP on the table
Well crud...I have ran the BMP stage 3 tune for almost 2 years and it hog's the fuel as well .. You may see a very slight improvement in MPG with the BMP stage 3 vs AA stage 3 ... but it will be very little ...but the difference in performance is noticeable , the AA is definitely higher performance
Elevation, population, and demographic certainly play a role ( If you don’t sell it, obviously nobody wants to waste money to stock it ).... but it’s still odd to me the places you can/can’t find it sometimes.When I'm in Denver or higher you about can't buy premium fuels. I'm sure they're around, but I never seemed to bump into them as a visitor.
@dafish I am not sure if you ever seen my.. Tune Test thread .... PWR Tune ..AA and BMP.... TunesWell crud...
There went $100. Oh well. I'll still try it since I own it now.
Max, can you give me a sense of what you noticed? Joey told me they bring boost in more slowly so fuel at part throttle isn't going into enrichment so soon. I'd expect part throttle, and I do 70% like that, to be easier on fuel. I'd also expect it to not be quite as strong on part throttle transition as a result, but similar on WOT. Which might make 75% effort/pace riding a bit weaker feeling.
But your take would be interesting (damn, I feel like we've taken over this post).
BTW, and if you own them, how would you contrast an AA stage 2 vs BM's stage 3?
btw, if you're running at altitude, as I suspect, your octane requirment, even on a turbo, drops a bit. (I believe the wastegate references atmospheric pressure)
This is far less true for a turbocharged engine. In stock form, the turbo will almost fully compensate for that altitude difference up until the efficiency of the turbo is maxed out. Boost tables are based off of manifold absolute pressure, not relative boost pressure. So if you are at sea level with 14.7 psi atmospheric pressure, and the boost target is set to 28 psi, your turbo is going to maintain that 28 psi by adding 13.3 pounds of boost. Now if you go up to 5000', you're down to 12.2 psi atmospheric pressure, and that exact same machine is going to maintain that 28 psi boost target by adding 15.8 lbs of boost...so the minimum octane rating remains the same as the cylinder pressure will remain relatively the same, albeit it possibly a bit hotter due to the turbo having to work harder and raising the Intake Air Temperature.Like said above, higher elevation requires less octane equivalent.