2.0T dyno run on 87 vs 91 octane?

bkeazer

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Has anyone tested the difference in power and torque the 2.0t will put down on the dyno when running on 87 octane vs 91? Wondering if the higher octane rating actually equals an increase in power and torque at the wheels.
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rogo66

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In my experience with 2.0L turbos higher octane always equates to higher power and torque.

I owned a VW GTI with a 2.0L turbo and Stage I flash from APR. Here's their dyno chart numbers for 91 and 93 octane:

91 octane
HP - 253
TQ - 309

93 octane
HP - 261
TQ - 317
 
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bkeazer

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In my experience with 2.0L turbos higher octane always equates to higher power and torque.

I owned a VW GTI with a 2.0L turbo and Stage I flash from APR. Here's their dyno chart numbers for 91 and 93 octane:

91 octane
HP - 253
TQ - 309

93 octane
HP - 261
TQ - 317

I assume the higher octane will equate to more power and torque at the wheels, as it did for you. Just wondering if someone has actually tested it. And if the power increase is significant enough to justify using the higher octane fuel.
 

Col_Sanders

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My butt dyno may need to be calibrated, but MY 2.0 seems to perform better on 87. I've ran several tanks in a row on 87 and 91 to let the computer acclimate and I feel like the throttle response on 87 is a bit quicker with less lag. Fuel economy also seems a bit better.
 

LITTLE WILLYS

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You guys are leaving something out. You are not taking into consideration as to how the factory has the ecm programmed. If it is programmed for low octane, then the programming will not let the benefits of higher octane happen. We did a comparison on chevy Euinox. One with the 1.5T with 87 stock tune, and one with the 2.0T with factory 91 tune. Putting 91 in the 1.5 showed no difference in power, and only a slight increase in fuel miles based on the ability to ignite better. So I would be interested in knowing what fuel was in the 2.0T Jeep engine to get their power numbers. Did they use the low grade, or high grade?
 
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