Poor hot idle caused by ethanol gas? Whaddya think?

slantsixdan said
Interesting. Top of the page you linked sez (added check marks are mine, to indicate applicable to the Slant-6):

WARNING

This product is not recommended for the use on:
1. Intakes with heat crossovers (√) and EGR values in the intake.

2. Straight 4-6-8 cylinder motors where the exhaust and intake overlap (√).

3. Some castiron intakes (√) have had an issue also

REASON: The polycore is an excellent insulation but it cannot take the extreme heat that the exhaust creates. This causes it to get soft or melt.

I saw that but decided to try it nonetheless. It was cheap enough and it did help. I didn't notice that it got soft or melted and I ran it just shy of a year.

WARNING​

This product is not recommended for the use on:​

1. Intakes with heat crossovers (√) and EGR values in the intake.​

2. Straight 4-6-8 cylinder motors where the exhaust and intake overlap (√).​

3. Some castiron intakes (√) have had an issue also​

REASON: The polycore is an excellent insulation but it cannot take the extreme heat that the exhaust creates. This causes it to get soft or melt.​

​

WARNING

This product is not recommended for the use on:

1. Intakes with heat crossovers (√) and EGR values in the intake.

2. Straight 4-6-8 cylinder motors where the exhaust and intake overlap (√).

3. Some castiron intakes (√) have had an issue also

REASON: The polycore is an excellent insulation but it cannot take the extreme heat that the exhaust creates. This causes it to get soft or melt.