Heat Shield vs. Turbo Blanket

[RICE RACING]

Originally Posted by beefhole

Water injection should help with the exhaust temps too, right?

I'll share this nugget with you and others.

98% of all driving in a road car is cruising, when a car is tuned correctly at stoich mixture the exhaust gas temperature is near 800 to 850deg C or so (otherwise its not efficient and wasting fuel) and the air flow is low so heat is fairly high and unrelenting. Water Injection is not operating at this level as the load is very low and its not required. So it has zero effect.

A turbo car needs heat shielding and insulation of parts effected by radiant heat. Otherwise the cooling system will be taxed and this gets amplified as you increase the ambient operating temperature.