1974 Jeep Cj5 4x4 304 3spd Ps Solid Classic Survivor on 2040-cars

Auto blog

How to tune a car right: Part 3, tuning Mopar with OST Dyno

Not long ago, I wrote a story about a pony car tuned with a supercharger. The blower install had been done properly. Then the car's owner bolted on a set of great looking wheels wrapped in good looking but inexpensive rubber. On my first test drive, I couldn't get any of that supercharged sweetness to the ground. It was the perfect ride for parking in a Burger King parking lot on a Friday night. I tooled around on a Sunday drive, shaking my head that someone had spent five figures to get more power the right way, with a clean install, then wiped out the gains so thoroughly that the stock engine would likely have overwhelmed the tires. This got me thinking about the ways people ruin their quest for horsepower, either on the front end by not insisting on a clean install and paying the money for it, or on the back end with supplemental purchases like cheap tires or cheap gas. So I called three tuners, one focused on GM, one on Mopar, one on Ford, to find out what people should know about how to get the best power for their goals, and how to make sure they are able to use all that power. The first interview in this three-part series was with Blake Leonard at Top Speed Cincy in Cincinnati, Ohio, the second with Brandon Alsept at BA Motorsports in Milford, Ohio. This third and last interview is with Micah Doban at OST Dyno in Slippery Rock, Pennsylvania, a family business with more than 40 years of Mopar expertise specializing in Gen III Hemis, but tuning everything from land-speed cars and drag racers to Jeeps The interview has been edited for clarity and concision. Do people who come to OST generally know what they want? Probably 80% of the people who come in simply want more power with no particular ET goal [ET is a kind of bracket handicapped drag racing – ed.]. WhatÂ’s the best way to start a Mopar tune? The first thing is what people often skip, and that's to find a tuner or a shop. People will throw parts on their cars that the Internet said to, then go to a tuner who does things a different way, and [the tuner is] like ‘No we don't like to use these injectors, we don't like these parts.Â’ You have to find someone familiar with the parts that are on your car or that you're planning to put on your car. So having a goal and then finding a tuner who can help you with that goal is proper way to start. Exactly. And a lot of tuners have their own formula – and when I say tuner I mean someone that also does work to the cars.

Ford Explorer, Jeep Grand Cherokee flunk IIHS passenger-side crash test

The Insurance Institute for Highway Safety (IIHS) has uncovered major safety-related problems while crash testing a number of popular midsize SUVs. Among those that scored an overall rating of "poor," the lowest possible score, are the Ford Explorer and Jeep Grand Cherokee. Both SUVs showed a high risk of injury to a front passenger during the IIHS' passenger-side small overlap front crash test. This test simulates what might happen if a car or SUV strikes an immovable object, like a telephone pole, at 40 mph and with roughly 25-percent of its front width. "Although some vehicles in this group offer very good protection, in other models, the airbags, safety belts and structure showed serious deficiencies," says IIHS chief research officer, David Zuby. "In those SUVs, a front-seat passenger would be at risk of injuries to the head, hip or leg in a right-side small overlap front crash." In the 2018 Ford Explorer, the front of the SUV showed the structure was "seriously compromised" during both driver- and passenger-side small overlap crash testing, according to the IIHS. The lower and upper door hinge pillar showed intrusion levels of 15 and 13 inches, while the door sill itself was pushed inward 6 inches toward the crash test dummy. The IIHS states these results indicate a high probability that a front occupant would suffer injuries to their right hip and lower left leg. The 2018 Jeep Grand Cherokee didn't fare much better. Not only did the Jeep exhibit 10 inches of intrusion at the lower door hinge pillar, the front passenger crash test dummy's head hit the dashboard through the front airbag. Worse still, the side curtain airbag didn't deploy and the front passenger door opened. The IIHS says there is a strong chance this would result in right leg injuries, along with the possibility of a serious head injury. Even vehicles that earned an "acceptable" in the small overlap front crash test showed definite room for improvement. The 2018 Honda Pilot, for example, showed good structural performance during the crash itself. But the front passenger crash test dummy's head slid off the deployed airbag and hit the dashboard hard, indicating a head injury might result in a similar real-world crash scenario. Two other SUVs that scored "acceptable" ratings included the 2018 Nissan Pathfinder and 2018 Toyota Highlander. Scoring top marks of "good," the highest rating, in these IIHS crash tests were the 2018 Volkswagen Atlas, 2018 GMC Acadia, and 2019 Kia Sorento.

Jeep Cherokee won't get diesel until sales of oil-burning Grand Cherokee improve

Okay Jeep fans, you want more diesel options? Time to step up and prove it. The only way Jeep will offer a diesel powerplant in the Cherokee, according to brand head Mike Manley, is if sales of the Grand Cherokee EcoDiesel nearly double.
Currently, about eight percent of the Grand Cherokees sold feature the 3.0-liter, EcoDiesel V6. That's simply not enough to warrant the bringing an oil-burning Cherokee to the US market, despite the vehicle's presence in Europe, where it's sold with a 2.8-liter diesel V6.
"Cherokee is slightly different because of its weight and size. When I think about bringing Cherokee diesel here, I would like to see Grand Cherokee diesel get much higher than eight percent," Manley told Automotive News. "It would have to be in mid-double digits."