SL55/63/65/R230 AMG what could be the problem ? system too lean

04-01-2010, 07:07 PM

#1

SL63_AMG

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sl63 Amg 09

what could be the problem ? system too lean

My car:
2009 SL63 AMG.

Mods
Custom x pipe (replaces the 2nd cats and resonators )
RENNtech ss headers
RENNtech ECU

checked the airbox and the exhaust.( no air leaks from the airbox or the exhaust)

plaese help

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04-02-2010, 12:49 AM

#2

super_monkey

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sl55

ECU? Oxygen sensor? System too lean means too much air and not enough fuel.

Last edited by super_monkey; 04-02-2010 at 12:52 AM.

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04-02-2010, 01:35 AM

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IngenereAMG

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SL55AMG, Ferrari 348, Ferrari Testarossa, Ferrari F40, Ferrari Mondial t, Ducati 916, Indycar

Sounds like ECU to me.

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04-02-2010, 06:33 AM

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SL63_AMG

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sl63 Amg 09

Quote:

Originally Posted by super_monkey

ECU? Oxygen sensor? System too lean means too much air and not enough fuel.

the dealership tested the oxygen sensors and they are working properly. they think that the tune is causing the problem.

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04-02-2010, 06:40 AM

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SL63_AMG

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sl63 Amg 09

Quote:

Originally Posted by IngenereAMG

Sounds like ECU to me.

thank you , i contacted RENNtech and they think that the problem is with the ECU ( hardware ) is not working properly. any thoughts ?

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SL55/63/65/R230 AMG: what could be the problem ? system too lean

SL55/63/65/R230 AMG: what could be the problem ? system too lean