RAD Merc SVT
CEG'er
Hey guys I'm having an issue with my car that I haven't had before. 99 Mercury Mystique 3L with NPG tune and doesn't have a knock sensor. So its getting hotter here in AZ and I just noticed today that when I was driving mid afternoon I went WOT and it didn't have as much power as it usually does and as I drove between two cars I heard what sounded like driving over rocks and the sound of them flying up and hitting your undercarriage constantly. Could this be Ping? I've heard ping before but never this bad (if that's what it is) It would have to be pinging every time it fires and loud! So I suppose my question is does this sound like ping? and if it is I can use my Xcal to retard the spark right? or with my minimal knowledge of tuning, I can add more fuel to get away with having more advanced timing can't I? On another note can I use one of the "wire in" AFR gauges on my narrowband O2s to adjust WOT Air fuel? I know they just bounce around at any other throttle position but I heard they actually work at WOT.
Thank you for the help
-RAD
Thank you for the help
-RAD