Recent content by sgt rock

I have a 02 supercharged 4Runner and needs some serious assistance. It has been getting around 16mpg for awhile now, 122k miles, and is really starting to miss at random rpms (especially when warmed up.) All check engines lights are on so I had the codes pulled and got P0420, P0300, P0304, and...

These will be the first mods. We won't be towing anything besides kid, dogs, and cat. How about dust? We are moving to Nebraska and it's really dusty there. I'm running an K&N right now. Will the computer be able to learn before the trip or is it gonna screw up while my wife drives?

What about making it run too lean? We are moving out of state on Sat. Is it too late to do the mod before we leave (EFI adjusting itself)?

I've been interested in doing these mods, but am wondering if you can do it on a supercharged engine. I just want to get a little more power and mileage for cheap, but don't want to screw anything up.