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You'd definately want to pull the intake before drilling & tapping it. Then blow it out REALLY well before firing it back up.
I'd think somewhere on one of the plenumms would be the most advantageous. Each runner on the intake will run a slightly diferent temp, due to airflow cooling the front, better than the back. Tapping into the large volume area would give a truer trading of intake air temp.
An old drag racer's trick is to put a bag of ice on the intake before a run. I've also seen dry ice in the airbox of a 5.0 Mustang.
I've often considered, what if you tapped into the A/C system, and added an evaporator into the airbox. I'm betting you could get 40degree air that way. However, I doubt there's enough room under the SVX hood for that.
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[SIGPIC]http://www.subaru-svx.net/forum/image.php?type=sigpic&userid=5569&dateline=1207440 507[/SIGPIC] Naught but by the grace of God "42" Current Stable By Age:
'89 Subaru XT6 Silver "Audrey" as in Hepburn
'96 SVX LSi #767 Brilliant Red "Lil Red" Now on the front burner. Looking for a totalled, but running parts car.
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