Even if this was the case for the 2nd gen Tacoma, what is 8hp extra going to do for me at 4400rpm? That's almost at the top of my power band.
Don't get me wrong i agree with on that one I don't ever hit 4400rpm i just wanted to point out that there is gains on the 3.4's i don't know if there is any gains on the 4.0's.
From the other forums I have been reading no one has gained anything on the 4.0's but i have yet to find Negative Dyno results on the 3.4's all i have to go by in my Friend that was a hot rod mechanic that told me about the spacer and the gains he seen with the 3.4
Now he could be full of shit I don't know i contacted him and told him there is a lot of guys out there that say this thing is crap.
He told me he will look for the test sheet and he will get back to me.