Kyle Busch is unsure just how competitive the Toyotas will be this weekend, when they race under the new engine regulations aimed at reducing their horsepower relative to their rivals in the Nationwide series.
The Sprint Cup series points leader, who has won five Nationwide events this season, was critical of NASCAR's decision to introduce a different tapered-spacer for the Toyota engines from this weekend's race at O'Reilly Raceway Park.
"I don't know, I think that was a bad decision on NASCAR's part," said Busch at Indianapolis Motor Speedway. "I think it was just a lot of whiny complainers that got their way and hopefully we can get out there and whoop their (butt) again."
Busch believes the numbers that came out of the dyno tests carried out by NASCAR at their Research and Development facility in Concord, North Carolina, do not show the kind of advantage their rivals claim Toyota has enjoyed.
He also said that the reason for the Chevrolet engines to be down on power to Toyota is that the SB2 engines ran by the Bowtie brand are not being developed enough as they are set be switched soon to the new R07 that is already being run in the Sprint Cup series.
"We were three (horsepower) ahead of Ford and I think three or four ahead of the Dodge and then the Chevrolet motors were way down," Busch said.
"I don't think anybody is working in the Chevrolet SB2 because they are trying to get the R07 approved, but if they get the R07 approved then the bore stroke on that is the same as the Toyota engines so they get the restrictor-plate that we got.
"So I don't know, NASCAR's decision is NASCAR's decision so we'll work with it. Rumor has it whatever they've lost in horsepower we've already gained half back so good luck everybody."
Kyle Busch will drive the No. 18 Joe Gibbs Racing Toyota on Saturday's Kroger 200 at the 0.686-mile O'Reilly Raceway Park, where he will attempt to give his team a record-breaking fourteenth win of the season.