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BROOKLYN, Mich. -- Team Penske drivers Joey Logano and Brad Keselowski had to repeat pre-race inspection after their splitters didn't pass the first time through before Sunday's Pure Michigan 400 at Michigan International Speedway.
NASCAR announced it asked the teams to switch splitters and that the original splitters would be taken back to the NASCAR Research & Development Center for inspection early next week.
NASCAR Executive Vice President and Chief Racing Development Officer Steve O'Donnell discussed that decision on Monday on SiriusXM NASCAR Radio's "The Morning Drive."
"On the 2 (of Keselowski) and the 22 (of Logano), in that case, they're so close on all the splitters and we thought the issue that we looked at was really close to the spec that we have so in that case we elected to take both of those, bring them back to the R&D Center and just take a closer look.
"I don't think we'll find anything in this case. It was just one of those areas of a car that, like we do from time to time, we take a look at. See what we may be able to learn if there's anything there, and then have dialogue with the team and the industry if we do see anything. But more of a procedural thing on our end this weekend when it comes to the 2 and 22."
Neither driver lost their qualifying spot due to the change in splitters. Logano qualified 10th while Keselowski was 14th. Logano finished seventh, while Keselowski finished ninth in the Pure Michigan 400.
"We do everything to our race cars," Todd Gordon, crew chief of the No. 22, told SiriusXM NASCAR Radio on Sunday before the race. "We clean everything up. We don't bring nasty, dirty race cars through inspection. We clean everything we can and make it as close to what we left the shop with. We cleaned it up, and we replaced it."
Logano won last week's Cheez-It 355 at Watkins Glen International, his second victory of the season, and he is now fifth in the Chase for the NASCAR Sprint Cup Series standings with four races to go until the postseason.
Keselowski, who has never won at his home track in Michigan, has one victory this season and is ninth in the Chase standings.