fkong777

@ 170 IAT on stock 04 SL55 is this normal? it was 75 degrees ambiance. Engine coolant temp was 190.
doesn't seem normal to me IAT @ 170

update.. it got up the 172 degrees. IAT. 200 degree coolant temp,

fkong777

fixed I read on multiple other m113k forums here Most likely the Heat exchanger pump.
I replaced it with a 010 bosch pump.
Added an extra heat exchanger
Added split cooling.
Result - 68 degree day.
Intake Air temp is now normally 15-20 degree above ambiance @89 degrees
Can heat up a bit more on Throttle
Also Can heat up a bit at the drive thru. got to 35 degree above ambiance. @102 degrees
once the car is in motion the intake air temp will cool down
definitely feels like there is more power than before.

Amir_AMG

Glad you got it all sorted out! Enjoy the new power