Actually, the fuel pump on a 7M-GE shouldn't start running when the key is in the "on" position without air moving through the AFM. The FC switch is open until air moves the vane and thus the switch.
Look over your wiring for modifications and shorts.
I hate the 4.3 on the highway on long trips and first gear is useless with a turbo pushing anything more than stock.... just my opinion. You could also try going with the 3.9 for something in the middle; that's what I plan on swapping in.
As in WET oil? If so you may have found the problem (or one of them). Oil can leak from the valve covers into the plug galley causing misfires as it soaks the plugs/wires.
Is it the one labeled 28515 here: http://www.cygnusx1.net/Supra/Library/EPC/291420/catalog.aspx?F=8404&P=1
If so, it's for the injectors and you do need it.... Unless the prev. owner swapped in some high impedance injectors. That's the only resistor I can think of in the location you're talking...
Any change to the exhaust system will result in changes to the sound... how much and what kind of change are the question. Going to a N1 style or most other "racing" type mufflers is most likely only going to make things louder... and dual tips quiet things down. The first thing I'd check is if...
Had any luck?
Is your stock O2 sensor still connected? Have a wideband installed? What size injectors? Please post up the settings from the config, setup and PT Tracking menus.
No problems. Took about 30 minutes to get a drivable tune running so I could get home, been tweaking a little bit here and there on my way to and from work (log on my way to my destination and dial in a couple changes once there)... Won't really have any time to really dig in until Sunday, but I...
Yep, a lot of them are complete crap, thin, and a VERY poor fit. I'm quite happy with mine from the aforementioned vendor though... DrJonez is who recommended them to me.
Checked for error codes? http://www.cygnusx1.net/Supra/TechTips/engine_error_codes.aspx
Checked your timing?
Still have a cat?
I'm not so good at reading emissions reports, these are just the first things to check.
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