In my last post, I detailed how the relays in the ECU system allow the system to flip to a default engine map. This lets the team keep running, even when something fails, and it decreases the chances of the ECU doing something that blows up the engine. Here’s a short explanation of what exactly an ‘engine map’ is and what it does.
Mar 102012
Feb 172012
As we turn on the (new) engines to start the season, the twitterverse is getting even more full of people debating the NASCAR EFI system. Is it like the EFI in production cars? Is it throttle body? Is it multiport? Here are the answers:
And yes, I think NASCAR did a pretty good job implementing this rather major change in a very short time. As I note in the video, going to an actual production-car-like EFI system would likely have required a wholesale engine design. NASCAR engine heads and blocks have special pathways running through them for cooling purposes – so it’s not as simple as just putting in eight more holes.
Feb 142012
The short answer: Carbs suck and EFI squirts.
The long answer:
There will be more in this series on the switch to EFI, including an appearance Friday, February 17th at 5:30 Eastern time on Sirius Speedway with @DGodfatherMoody to bust some common myths about NASCAR fuel injection!
See all the Motorsports Science Minute Videos.
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