This is the 3rd set of plugs I've ran since going BPU (every 4500 miles). They are NGK 3330's @ factory gap. To me they look like they're running too hot. I'm not sure though that's why I want other opinions. My worthless ass EGT and A/F ratio gauges's (Greddy), have never given any indicatin of anything being wrong, and the car pulls strongly. Should I invest in an AFC? I though BPU Supras with no fuel control ran rich as hell.

Exhaust temp probe is mounted at the top of the down pipe, which I know is bad. It has never gone past 680˚C. And my A/F gauge always reads full rich at WOT.

1-3



4-6



1995 Supra TT 6-speed BPU
12.55 @ 117.8

They look fine to me. A fuel computer is a good idea however...

They look OK. But if you have a doubt, you should check out different symtoms here. http://www.mkiv.com/manual/manualtt/gapping/plugsdiag.jpg

And you can read about the spark plugs here.
http://mkiv.com/manual/manualtt/gapping/

Looks like #2 and #3 are burning a little hotter than the others.

Youve wasted money on plugs. There is nothing wrong with them.

1987 Toyota Supra