What octane are you guys running in your trucks?  When you respond, make note of the engine (22r, 22re, etc.)  I've been putting 93 in my 91 22RE.  I figure it makes the engine run cleaner, and maybe a little better.  Higher octanes are supposed to protect against detenation, so I always figured getting 89 or 93 was like cheap insurance.  Opinions?

I put an Alpine supercharger on my ’95 2.7L.  This was before Alpine started making them for TRD.  It uses the M90 blower rather than the M62 like the TRD V6 & 2.7L kits.  I had to do some fabing and tuning after the install.  I did run 100+ octane through it at one point while I was testing.

The bottom line with all performance issues is; “Performance is where you find it.”

My wife’s Subaru OBS has a tremendous increase in power on hi octane IN THE SUMMER.  I also found that it was difficult to start in the winter with premium and we had to go back to the cheap stuff.  I think the improvement in the summer was the ECM advanced the timing on premium fuel.  Unfortunately,  the higher the octane, the less volatile the fuel, which in some cases reduces ping but can also make an engine difficult to start out here in the northwest.

The point being, run the cheap stuff for a while and keep track of fuel mileage and acceleration by timing acceleration runs (i.e. 0-60 in seconds).  Also note the startability!  Then do the same with premium fuel.  I’d recommend doing this for summer and winter.  You will then know what that vehicle will do in these cases...  This is relatively easy and fun to do.  You can also use the same tests for modifications you try.