That area of the engine doesn't come anywhere near a temperature that would damage the ABS manifold plus, ABS parts are a lot cheaper to make than an equivalent out of metal - you can mold them to very precise measurements without needing any manual intervention in machining. In addition, ABS is a much better insulator than metal of any type, so air flow through the ABS intake will remain much closer to outside temp without the need for any other insulation and the air moving through is fast enough that it doesn't really have much of a chance to absorb anything from the manifold. I use ABS tubing for the cold air intake for the same reasons.

 

^ how do you get this data? Are you going off the intake air tempature sensor? The one located before the intake manifold.....

Or

Is this legit data where you managed to measure the actual air moving thru the intake?

 

No, I never did any temp tests, I rely on the material properties to tell me how it will react. Many plastics transfer heat poorly, so as long as you pick one that fits the conditions it needs to "live" in, it will work much better than any metal.

 

For God's sake man! You keep injecting Science and logical deduction into these discussions! LOL!

 

dam that logic and science, next thing your gonna tell me is that the earth is round and isnt the center of the universe and that guns dont kill people, dads with cute daughters do.

science and logic...aint nobody got time for that!!!!!

 

Sorry, didn't mean to confuse anyone