an exhaust is a good idea, but its really not gonna do you any good unless you mate it with a good set of headers(doug thorley) and that means pulling the motor.
Sorry, I should have clarified, I meant header back exhaust mod. Do you really have to take out the block? Is that just for these particular headers? I found the instructions from dougthorley's website and they don't mention removing the block, just raising the trans slightly. DT Header Install Instructions
tacos and 4runners are the same from the cab forward so no tacos do not have external trans coolers.
So is there a radiator available that is coolant only? If the OP is going to do an external trans cooler, it would seem to make more sense to not have a radiator with the trans cooler built in, that would give it more cooling ability, would it not?
dont do a CAI, they do nothing for our trucks, in fact in my experience they hurt the truck by sucking in hot air. hot air is less dense than cold air and will cut power -but it might fix your leaning out issues -joking, dont waste your time or money on a CAI, just buy a good high flow filter and do an ISR delete mod.
Really? I could understand if somebody did a Short Ram, but called it a CAI, but if it is a true CAI, i.e. inside the fender well, wouldn't that give colder air = more power?
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BTW, I found the DT headers on Amazon for $500. No idea on quality, or even brand assurance, but they are there. Amazon DT Headers