Is anyone doing a hot air intake vs cold?

[outsidethebox]

Hi, Is anyone doing a hot vs cold air intake and what are the results?

[blueflame]

Just about everyone here almost.

Refer to archives. Search with keywords

[outsidethebox]

Originally Posted by blueflame

Just about everyone here almost.

Refer to archives. Search with keywords

Thanks!!!

[hyperyaris]

YAris comes stock with a pretty hot intake lol

[tjts1]

All 80s and 90s non turbo volvos have a thermostatically controller hot/cold intake that usually fails on the hot only side after 10 years. Fixing the intake to breath only cold air all the time usually nets 10-15% FE improvement as well as power.

[blueflame]

I get 10-15% more with hot air, especially in winter

[Brillig]

I'm working on a hot/cold 'switchable' intake to do A/B testing on my 93 escort wagon. I intend to do a/b testing for a couple of months ('full tank' method of measuring gas consumption).

Side issue - the air intake has a restriction before the filter, which necks down the air channel to approximately a 1" throat - it is part of a plastic channel which resembles a human 'stomach with intestine', with a large vacuum reservoir just after the restriction.

I removed this and see immediate improvements in 5th gear acceleration, pulling power. Less load on the engine with freer air supply is my guess.

[blueflame]

Intake restriction often improves torque. And FE too I think