Jeep ZJ Benifits Of Engine Braking Tested Via DIY Fully Adjustable IAC Valve

1997 5.2 V8 Grand Cherokee
Testing my home built I.A.C. controller I made, where I can fully adjust and fine-tune the Idle-Air Control Valve open or closed on the fly in real-time...

Testing the benefits of 'Engine Braking' aka holding-back down hills, via manually shutting the IAC valve all the way and letting it hold back super good down hills now (more like a manual transmission would) which will have tremendous benefits saving your brakes (keeping the heat out if them) when going down long hills and mountains, especially when towing a small camper!!