I had my 2005 Magnum grooved in November, and have had no fuel economy improvements. Per instructions from The Groover, I've reset the computer, checked for utilities leaks, waited a couple of tanks, etc, all to no avail - still no improvements.
Today, following the example of another recent post for 0 increases, I dismantled the throttle body again, this time taking pictures - see attached.
I think I may have been incorrectly Grooved!
My limited understanding of Grooving led me to believe that the groove was placed next to the throttle body butterfly, on the exterior side - air entering from that side through butterfly's into intake (interior). That's how it "built up" the air wave before sending it into the intake.
As you can see from my photos, I've been Grooved on the interior side of the throttle body.
So, if, in fact, I was Grooved on the wrong side, it my throttle body toast? If I just had it regrooved correctly, wouldn't that leave an awfully thin ridge at the butterfly closed position?
Can my TB be repaired, or does it need to be replaced?
Could this explain why I'm getting this annoying whistle?
Thanks for any suggestions, comments, etc.
Harry