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Dyno Test #2: Now With 93 Octane Gasoline

We were a little underwhelmed by the results of our first dyno session last Thursday, so we ran the tank pretty close to dry and refilled it with nearly 18.5 gallons of 93 Octane Chevron, then drove another 50 miles to make sure the engine computer had time to "learn" that it had higher octane fuel in it. As you can see in the plot below, it appears that this higher octane fuel allowed the engine computer to take advantage of the extra octane as both torque and horsepower improved between 5400 and 6600 rpms, with maximum gains of around 8-9hp and between 6 and 7 lb-ft of torque. Are the gains worth spending an extra $3-4 per tank? Probably not.



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Subject Thread Originator Replies Last Post
  Overlay with '06 '07 J30 Plot
gofast182 4
  Going to re-dyno with Premium
JeffX 14
  I4 test
BOOMER 0
  Jeff, how does this compare with an '06+ TSX dyno?
STL 7
  Mid range sit better then last gen?
rfs830 1
  acura over honda
acurasales 6
  Honda overated
Xavi77 1
  Where is the 6spd V6 Coupe?
mobomofo 3
  Not very impressive
6SPDTL 7
  Losses
Wizard 17
  JDM Inspire Prototype (280hp?)
alan3885 2
  Continued Disappointment
Bepperb 6
  Not giving an excuses
AKO1 0
  Any chance of the 190 HP 5 Sp as well?
Dave 0
  Can someone explain this to me?
MikeStats12 3
  Lows and mids
soulboy 1
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