Anyone know where to purchase different size pulleys, for the TRD Supercharger, used on the 4runner?

maxxautoworks.com

I have no afilliation, and they never respond to my emails.
but they supossedly have them

make sure your fuel system is up to the task 1st!

Jeff

The ignition timing is the same as any other stock 4runner,with the TRDblower kit having no way to change that,and any more psi could easily provoke some nasty detonation.
An aftermarket,add-on ECU would fix that,however,allowing you to retard the timing.
Good luck