How is this not standard on every Jeep 4.0L ?

The jury has been out on the benefits of the 4-Hole 4.0 Upgrade. Today we test that out and install the DEI Heatshield replacement for all Jeep 4.0L's

Thanks to @KSuspensionfab for making these available
https://www.ksuspensionfab.com/store/p8/Remanufactured%3A_4_Port_Upgraded_Fuel_Injectors_XJ%2FMJ.html#/

and be sure to get the DEI kit below-
https://www.amazon.com/gp/product/B015NOKWQY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

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