I don't really have any performance issues.. Got 19MPG on the last highway trip.. That is with a pretty good load using the air for about half the trip.. The power is good and it idles fine, smooth as can be! If it started properly, I would have absolutely no problems with the truck! Once it starts, it runs like it is brand new (and I had one of these '95 T100's brand new.. leased it and learned my lesson!) So no hesitation, no power loss, idles smooth.. When I changed the plugs, I put factory plugs in it along with factory plug wires.. I just checked the old plugs and they look tan.. I checked my file and the guy did say he had a new Throttle Position Sensor put in and right after I got the truck, the check engine light came on with the code for that sensor so my mechanic just made an adjustment and the light never came back on with that code.. It came back on with the cat converter code but like I said, after the plugs and plug wires were changed, the light went out and has never come back on and it's been over a month ago.. I just don't get it but it is frustrating, especially when a buddy says "is this Toyota going to start?".. Can I clean the mass air flow sensor myself or does it need to go to Toyota? If I take it to Toyota, I would have to pay and would probably have them check the pressure in the fuel lines.. Just trying to not incur that expense.. I appreciate the help!