SL55/63/65/R230 AMG IAT @ 150 on a 70degree day

May 19, 2020 | 12:37 PM

fkong777

Thread Starter

Super Member

Joined: Nov 2004

Posts: 687

Likes: 26

From: So Cal

07 GL450, 91 NSX, 12 Prius

IAT @ 170 on a 75 degree day

@ 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,

Last edited by fkong777; May 19, 2020 at 08:32 PM.

Jun 7, 2020 | 02:41 PM

fkong777

Thread Starter

Super Member

Joined: Nov 2004

Posts: 687

Likes: 26

From: So Cal

07 GL450, 91 NSX, 12 Prius

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.