Intake cross over blockage or not ?

Bump an old thread but I ran intakes both ways up here in cool weather Michigan. Having the exhaust heat passages OPEN are the way to go. At night during WOT the intake will get cold even driving it ALL night. I found at night time and cool weather a heated intake will make MORE power--not less.

True, mid summer during the hot afternoons the intake gets too hot but a carb spacer helps keep the carb cool as the air going through it helps cool it off.

During WOT the air goes so fast through the intake it does not heat up all that much.

I believe many people make a mistake by blocking the exhaust heat for the intake which can lead to foul out spark plugs and a stinky exhaust smell.

If you live in the hot South were temps are 100 degrees everyday then you should block the heat off but for everybody in say like Canada its better overall to have the intake heat.