Fulger55

Hello
I bought a 2004 E55 amg with 66k miles and recently I did all the maintenance possible and some upgrades

77mm pulley , headers , all cats delete , split cooling

The car is running hot to my liking , IAT at 115F ambient and way hotter when I step on it
Now the question is what should I add.? .... Water methanol injection or Interchiller?
The car is used for spirited driving and maybe autox and/or track days and not for drag strip

Thank you

87geeinn

A bajillion threads on this. For starters, replace your coolant pump with a Bosch 010 unit and a larger heat exchanger. If even more cooling is desired, you can look into a trunk or under hood tank to increase volume. For a more involved cooling setup, you might want to consider water/meth injection or even a "Killer Chiller," but just be advised you'll probably sacrifice some air conditioning temps if you go this route. Google is your friend.

GinDistiller

Where are you located? I second the pump if it's not new, but expect to run 20 deg over ambient unless you go killer chiller etc. Running these cars in warm climates just sucks unfortunately. The 'smaller' cooling mods will help recovery times but not hugely affect normal running IATs.

ModE211

Go with bigger heat exchanger maybe even a secondary heat exchanger from vrp with a under hood tank, and that should be more then enough cooling if your still having issues maybe wrap your headers? See if your air box is heating up.

black06c230

Simple

killer chiller feeding a trunk tank and then add meth injection. Bye bye high temps. It’s like driving in winter year round. The AC hit for the cabin is not a big deal. It might take you an extra few minutes to get comfy. I can deal with that trade off. Even in Alabama heat and humidity.

forget the larger and extra HE you will still not get the best from your car. At 120* it starts losing power due to timing being pulled. Typical is 10-15 over ambient for cruising temps. So if it’s 90 out that put you at 100-115.

Fulger55

Sorry for the late reply
I have bosch pump 010
I am not an expert but I think larger heat exchanger and or trunk tank will only help only with recovery time not dropping IAT
I am located in Chicago
If methanol does the job or Interchiller (not Killer Chiller) I prefer to do that
Interchiller is the Australian made and is double the price of Killer Chiller and hopefully twice as good ....I saw some videos were the piping is frozen...I like that ...lol

Thank you for your help