Chad told Jimmie to wreck the car if they won Talladega

From Jayski:

Knaus told Johnson to wreck car if he won at Talladega: Chad Knaus told driver Jimmie Johnson to intentionally damage the back end of his race car if the #48 team won Sunday's race at Talladega Superspeedway, the crew chief acknowledged Wednesday. Knaus admitted giving the five-time NASCAR champion the pre-race instructions in order to "cover our bases" in case 500 miles of bump-drafting knocked the car beyond NASCAR's strict tolerances. Officials likely would have accepted the damage as an excuse if the # 48 car had not fit NASCAR's templates in post-race inspection. The conversation between Knaus and Johnson occurred when the crew chief leaned inside the #48 car before the race to give Johnson some final words of encouragement. Because Johnson's in-car camera was live on NASCAR.com's RaceBuddy application, the chat was broadcast to anyone watching the feed at the time.
"If we win this race, you have to crack the back of the car," Knaus could be heard telling Johnson on the recording. "Got it?"
"Really?" Johnson replied, sounding surprised.
"Yes," Knaus said. "Got it? You don't have to have to hit it hard, you don't have to destroy it. But you've gotta do a donut and you've gotta hit the back end, or somebody's gotta hit you in the a**-end or something. OK?"
After Johnson responds with apparent silence (he can't be heard saying anything else), Knaus added, "You'll be alright. Can't take any chances."
When asked Wednesday whether the conversation indicated Knaus was trying something fishy on the back of the car, the crew chief replied, "I don't think that's a fair assessment. To be honest with you, here's the deal - racing at Talladega is tough, and I think everybody understands that," Knaus said in a phone interview. "You run 500 miles at 200 miles per hour, and you're bump-drafting and you're beating on one another, and it's real easy for these cars to get outside of tolerance. It's a tight tolerance that we're held in. It doesn't take much to be a few thousands (of an inch) off and have NASCAR raise an eyebrow. Just being proactive, I just told Jimmie, 'Look, man - we've just got to make sure there's a tire mark or some type of visible damage.' Just because cars do move when you race them like that."(SB Nation)(10-26-2011)