[Pelham]

https://tsi-blog.com/2015/07/beware-of-bogus-inflation-indices/

“Another alternative CPI is called the Chapwood Index. The components of this index were selected based on a survey of what Ed Butowsky’s friends and associates spend their money on (Ed Butowsky is the index’s creator).

“The prices of the 500 most commonly purchased items were then added together to generate the index. Not surprisingly, considering the methodology, the result is not a realistic measure of the change in the dollar’s PP or the cost of living.

“As evidence I point out that if the roughly 10%/year average increase in the general price level estimated by the Chapwood Index during 2011-2014 is correct, then the US economy’s real GDP must have been about 25% smaller at the end of 2014 than it was at the end of 2010*. In other words, if the Chapwood Index is an accurate reflection of PP loss then the US economy now produces about 25% less goods/services than it did four years ago. This is not remotely close to the truth.”

[SmokingJoe]

Again the CPI is calculated by the Bureau of Labor Statistics. Period.
It's been refined and adjusted through the years taking account of the basket of goods/services that the average family spend their income on.
We can't have everybody coming up with their own little indexes. That is why The Bureau of Labor Statistics is the officially recognized one.
And the CPI index for May was 0.1%, down from 0.3% in April. Inflation is very very low.
You can read all about it here.
https://www.bls.gov/cpi/

As for the economy, it's going to have spectacular growth between now and November . And the record new job creation figures will continue right up to the elections in November.
Everything is looking great for a very nice Trump win come November.