How many degrees is too many? (WAI temperature)

[RobertISaar]

Originally Posted by ksa8907

Would there be a benefit to blocking the egr and doing more wai/hai? To increase the throttle angle and decrease pumping losses.

you want to remove an excellent source of heated air and a known method of decreasing throttle losses to try and suck up inevitably colder(than exhaust gasses) air?

[jere]

Originally Posted by blowncopcar

I have a hot air intake installed on my 97 geo metro 1.0 liter... My UG says my temp is going to about 176+ degrees... Is this too much or is it fine? It seems to run okay

The answer depends on the motor design at the end of the day. You can get an idea of what is too hot by your coolant and oil temps. You don't want the computer to pull timing, and you don't want oil temps over 220-230*F. That is right around the temps that oil stops doing it's job and you can see engine damage. Also you don't want your coolant boiling,as it stops doing it's job of cooling. To fight that you can get a high pressure rad cap to help with this, but there are downsides too (more leaks could pop up on an old system).