#lsa

Piston Slap: Fuelish Thoughts on Engine Calibration

TTAC regular PrincipalDan writes:

Sajeev,

With the price of gas dropping to levels not seen in many moons, a thought occurred to me: Many of us are driving around in an average vehicle that has an engine used by another vehicle advertised as having more horsepower and recommending premium fuel.

For example: Toyota’s 3.5-liter V6 powers the Camry and ES350, but the Toyota’s tests with 87 octane fuel while Lexus tests with 91 octane fuel.

Do the manufactures actually bother using different engine programing in these various vehicles? Or is greater horsepower just a premium fill-up away for those with lowlier vehicles with premium antecedents?

Sajeev Mehta Apr 12, 2016

Recent Comments

Dartman https://apnews.com/article/artificial-intelligence-fighter-jets-air-force-6a1100c96a73ca9b7f41cbd6a2753fdaAutonomous/Ai is here now. The question is implementation and acceptance.
FreedMike If Dodge were smart - and I don't think they are - they'd spend their money refreshing and reworking the Durango (which I think is entering model year 3,221), versus going down the same "stuff 'em full of motor and give 'em cool new paint options" path. That's the approach they used with the Charger and Challenger, and both those models are dead. The Durango is still a strong product in a strong market; why not keep it fresher?
Bill Wade I was driving a new Subaru a few weeks ago on I-10 near Tucson and it suddenly decided to slam on the brakes from a tumbleweed blowing across the highway. I just about had a heart attack while it nearly threw my mom through the windshield and dumped our grocery bags all over the place. It seems like a bad idea to me, the tech isn't ready.
FreedMike I don't get the business case for these plug-in hybrid Jeep off roaders. They're a LOT more expensive (almost fourteen grand for the four-door Wrangler) and still get lousy MPG. They're certainly quick, but the last thing the Wrangler - one of the most obtuse-handling vehicles you can buy - needs is MOOOAAAARRRR POWER. In my neck of the woods, where off-road vehicles are big, the only 4Xe models I see of the wrangler wear fleet (rental) plates. What's the point? Wrangler sales have taken a massive plunge the last few years - why doesn't Jeep focus on affordability and value versus tech that only a very small part of its' buyer base would appreciate?
Bill Wade I think about my dealer who was clueless about uConnect updates and still can't fix station presets disappearing and the manufacturers want me to trust them and their dealers to address any self driving concerns when they can't fix a simple radio?Right.

Car Reviews By Make

view all

Top stories

Piston Slap: Fuelish Thoughts on Engine Calibration

Latest Car Reviews

2023 Ford F-150 Raptor R Review – Beast Mode

Drive Notes: 2024 Alfa Romeo Tonale eAWD

Drive Notes: 2024 Ford Maverick Hybrid XLT

2024 Hyundai Elantra N Review – Tightening Up

2025 Hyundai Ioniq 5 N Review – Shockingly Spicy

Drive Notes: 2024 Kia Telluride SX-Prestige X-Line

Drive Notes: 2024 Nissan Versa SR

Latest Product Reviews

Best Amazon Prime Day Deals for TTAC Readers

TTAC Video of the Week: Looking Back on NASCAR Invading LeMans

Here’s How To Get the Best Deal on Winter Tires Right Now

Best Power Inverters for Your Car: Plugging Away

Best Sunshades for the Car: Where the Sun Don't Shine

Recent Comments

Car Reviews By Make