1st gen Tacoma tuning help

I just put an AEM AFR gauge in my 03 supercharged Tacoma. The insallation cos tmore than I antcipated but pretty much needed to bite the bullet. Once you SC... the costs for additional fuel mods, gauges and such start adding up.. but well worth it in my mind. I have had mine installed for nearly 15 years now. I have changed the oil 2-3 times but have not done a rebuild... I have taken it apart and greased rear bearings, cleaned it out with carb cleaner, replaced the coupler, reassembled and put new oil in. It seems ok. However I am getting worried that I'm pushing my luck and should get new bearings installed being everyone says rebuild at 150K is almost manditory. I currently have the stock pulley on there for all these years. I do now have 2.2" URD pulley sitting on my bench ready for install though. I'm still tuning the truck with a URD FTC1-017D (and having trouble getting that nailed down so far). Also plan on adding meth/water injection once I get past some of the tune issues. Anyway... the wideband AFR gauge is a necessity when SC in my opinion. Trust me in that statement... I blew an engine already running too lean. A very costly mistake. Add those fuel mods... get a good tune... monitor your engine... and have some fun!

 

If your running the stock pulley it puts much less stress on the supercharger and 150,000 or more is really more of where it should be done if the bearings don’t go out sooner, usually it’s the nose bearing that goes out first and the more oil changes probably the longer it will go.
When you go to a smaller pulley 2.2, 2.1, 2”, the supercharger is spinning considerably faster with more boost more heat and of course you get more wear on the bearings which means getting it rebuilt sooner.
I’m running a 2” pulley and now my rebuilt miles are at 100,000, where are before with the stock and 2.2 pulley I was at 150,000 miles.

Remember each added pound of boost creates 10 more degrees of heat being forced into the engine.