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Nov 1, 2025 | 12:41 PM

65GTO

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6th Gear

Joined: Sep 2012

Posts: 6

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From: NE

Performance chip

Ran into a guy with a WRX at the gas station. He was raving about Cobb tuning. When I looked it up I couldn't get anything for my 2019 RC 350. What do you guys think is the best way to go to increase power and fuel efficiency. I am very disappointed with my 26 miles per gallon on the highway.

Nov 2, 2025 | 09:48 AM

joeymathew01

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Joined: May 2025

Posts: 39

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Quote:

Originally Posted by 65GTO

95% of the time a tune for ANY car will not increase MPG. If you’re upset with 26 mpg in your 300+ horsepower sports coupe, then I may suggest a camry/corolla or a hybrid. RRRacing and D3 have tunes for our cars that will net 10-15 horsepower (which you may not notice) but will not increase you’re fuel efficiency as you are changing the factory tune to prioritize horsepower over fuel efficiency. I get the same mileage in my RCF as I did with in my RC350

Nov 3, 2025 | 09:01 AM

dmanb2b

Pit Crew

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Joined: Dec 2024

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COBB is bottom of the barrel when it comes to tuning. Not sure why you are very upset with MPG as that's how the car is advertised. You can't have more power and make it more fuel efficient unless it was a diesel with a restrictive emission system, which this does not have.

Nov 3, 2025 | 10:50 AM

RRRacing

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From: Pennsylvania

Quote:

Originally Posted by joeymathew01

95% of the time a tune for ANY car will not increase MPG. If you’re upset with 26 mpg in your 300+ horsepower sports coupe, then I may suggest a camry/corolla or a hybrid. RC350

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