On the Tacoma I clean the TB/MAF when doing plugs, usually every 100k. Quality air filters are important. I will do a quick clean on the TB if I have the intake apart for some reason.
On the Corvette, hardly ever. Done it once in the last 6 years, just because...? Didn't notice a difference but it always ran great.
On the Corvette, hardly ever. Done it once in the last 6 years, just because...? Didn't notice a difference but it always ran great.