B

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The product ordered came on time and was at a great price

I just installed these into my lsa supercharged 2005 chevy tahoe with the stock 5.

Great product, great price, just as advertised.

Worked great for 10lbs of boost and e85 on a twin turbo 5.

They recommend a 6 heat range as well if you are under 13lbs of boost on the gm 6.

I pulled these plugs, they were fouled badly after 3 hours run time, put tr6's in and she's a champ again.

How are reviewers describing this item?
great, stock, perfect, ordered and good.

Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.

Our engine has discovered that over 80% high quality reviews are present.

This product had a total of 118 reviews as of our last analysis date on Aug 8 2021.

The AI used to provide these results are constantly improving. These results might change.

Posted by a reviewer on Amazon

I thought i had some ecm relearning going on and it actually got better but still stumbled at certain rpm ranges

Posted by a reviewer on Amazon

They told me that the rule of thumb is a heat range per 10lbs of boost

Posted by a reviewer on Amazon

After all this i also found some good supporting documentation online from lingenfelter and dyno testing theyve done with their mod kits

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