SL55/63/65/R230 AMG: How much boost do you make?
10-10-2009, 09:47 PM
#1
Member
Thread Starter
How much boost do you make?
Anyone check how much boost you make. Just got the dashdaq and it shows 35 psi. Anyone know how to adjust that to actual boost instead of map psi which is atm press + boost? IAT fluctuates a lot. At idle it can go to 170F. If you hit the gas it drops 20-30F due to the volume of air flowing. Cruising at 70mph with outside temps at 70*F it is around 120*F. Throttle angle has a lot to do with IATs. Timing retards a lot if you floor it, can go to 0*TDC, but when decelerating it is -30TDC, normal?
10-14-2009, 01:43 PM
#2
MBWorld Fanatic!
Anyone check how much boost you make. Just got the dashdaq and it shows 35 psi. Anyone know how to adjust that to actual boost instead of map psi which is atm press + boost? IAT fluctuates a lot. At idle it can go to 170F. If you hit the gas it drops 20-30F due to the volume of air flowing. Cruising at 70mph with outside temps at 70*F it is around 120*F. Throttle angle has a lot to do with IATs. Timing retards a lot if you floor it, can go to 0*TDC, but when decelerating it is -30TDC, normal?
Please post again in plain English.
10-14-2009, 09:52 PM
#3
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2003 W211 E55, 2003 W220 S600
Anyone check how much boost you make. Just got the dashdaq and it shows 35 psi. Anyone know how to adjust that to actual boost instead of map psi which is atm press + boost? IAT fluctuates a lot. At idle it can go to 170F. If you hit the gas it drops 20-30F due to the volume of air flowing. Cruising at 70mph with outside temps at 70*F it is around 120*F. Throttle angle has a lot to do with IATs. Timing retards a lot if you floor it, can go to 0*TDC, but when decelerating it is -30TDC, normal?
IATS are way to high your IC pump has failed (that is if you have a 55 s/c engine) when it is 70 outside the IATS should 15-20 above ambient temp
10-16-2009, 06:57 AM
#4
Member
Thread Starter
I have v12 biturbo as in s600, Pump is fine, I guess we run a little hotter IATs. I think it is where the sensor is, it is in the top of the intake manifold which gets engine hot ie. 85*C. IATs drop when you hit the gas and open throttle plate and a nice cool breeze drafts by that hot IAT sensor. Close it and immediately IAT rises.
