thanks. i did not know what kind of header i had. i bought a non running truck 4 $70 and the header was on it so i put it on my 4runner. if anyone knows of any other small motor mods they think i should try i would be interested in hearing them.

As mentioned with the efi it is a little tricky for cheap mods.  You can advance the MAF a little, but be careful, w/o supporting mod's like larger injectors you can lean it out and burn valves.  I would start by dropping down to a smaller diameter of tube between the cat and the muffler, and see if that helps w/the performance, or run a section of 2" tube w/similar bend to the oem system from the muffler back to to the original exit location.

After that you could open up the intake a little.  Some have gained a little performance from cutting a large hole in the air filter box(below the air filter of course) to draw in more air.  Removing the small pipe inside the box(on my '91) seemed to help some.  You could also wrap the intake tube w/cool tape so it doesn't absorb heat from the radiator/engine, cooler air = denser air, so the ecu will add more fuel to the mixture.  The tape runs about $15/roll from Summit racing.  You could also replace the oem intake w/an ope element one, though this isn't that cheap unless you can fab up your own plate(to attach the AFM to) and just buy the filter.  This would allow the engine to draw in more air, and is a more direct intake than the stock system, though the open element does have its own issues.