"What I think was happening is the coil would only
fail under very high load and when it would fail, the voltage spike was always big enough to knock the PCM down."
So potentially my $30 coils are not quality enough for the Tune, considering the ETC Failsafe only happened once I put the tune on it. And when I rev up, the coil is sending high voltage through my system, tripping the PCM.
Thing is brother, I dont have the equipment to test the coils, and I have to keep paying mechanics for their labour. But yes, I did buy the $30 Standard instead of the $60 Standard coils. I mean, heck, I used to buy $8 ebay coils on my FIRST LS (2002) and that had a tune. I guess standard coils are less than $8 value but overcharged =p
Ok so heres where I'm at then. My fuel mileage has gone down recently (it is winter now, but its down by a full Liter /100kms).
I cant afford to pay FoMoCo $1500 CAD for coils.
I read on here that few members bought the Accel Mustang coils. They are a solid price on Amazon. Just have to reverse the terminal +/- on the plug.
https://www.amazon.ca/ACCEL-140032-8-Super-Coil-Kit/dp/B001O0BJUK
Any thoughts or feedback on these? My mechanic says Accel are amazing, he loves those plugs. But I'd appreciate feedback from the LVC community.