I installed my first grooved TB on my 2001 Dodge 1500 4X4 with 360L engine. It took me a while to install this, but i needed to get this thing running normal before making this modification, now it's running on a new TPS, Speed sensor, and rebuilt ECM. I did find out it gets a WHHOPPPING 9 whole miles to the gallon, thirsty. Anyhow, I installed the modified TB, plugged the PCV port and rerouted the hose to the intake plenum after the filter(passive). Completed the relearning procedure for ECM as per the instructions. After that we took it into town, about 50 miles round trip. Smelled the exhaust, and you can't smell anything. I like how this thing sounds and responds so far. Now I'm waiting to get some miles on it to find out how the MPG responds. Keeping my fingers crossed.
John
PIC's: 1) open intake manifold, minus TB
2) rerouted PCV tubing, left is PCV, right is other valve cover vent tube already vented to the cover