W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Dyno w ASP & Evosport shorties

Old Apr 10, 2008 | 11:34 AM
  #26  
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e55 w/LET TUNE Drinks: vodka STRAIGHT Wheels: 19" HRE 547r Mods:FF headers ASP Pulley
whats the redline on the cars?
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Old Apr 10, 2008 | 11:58 AM
  #27  
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2011 twin turboed prius
Originally Posted by DFW01E55
I wanna' believe you're right but when the AFR leaned out with the headers, I figured the yield from a tune decreased too. I thought maybe 20 hp but your numbers are better.

Anyone else?
It should be more than 20 with the headers, I have seen guys get 45-50, 70 is possible with an agressive tune. Vadim what do you think :-). 50 reasonable?
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Old Apr 10, 2008 | 12:35 PM
  #28  
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DFW:

On the run with headers, IMHO, the car went into cats protection mode and dumped a whole lot of fuel to keep them alive, this why there are no power gains.

Make sure there is enough air from the fans and adequate time between runs for the car to cool down. This is why I frequently use 3rd gear on 55s. There is simply not enough airflow in most dyno rooms to keep 500HP car cooled properly at 150 plus.
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Old Apr 10, 2008 | 01:05 PM
  #29  
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Originally Posted by Vadim @ VRP
DFW:
On the run with headers, IMHO, the car went into cats protection mode and dumped a whole lot of fuel to keep them alive, this why there are no power gains.
If it was dumping fuel, shouldn't the AFR be richer?

Agree on the ventilation, there were a couple of weak fans.
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