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SLK Back Pressure Too High?

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Old 06-09-2003 | 05:59 PM
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From: Calgary, Alberta
2005 SLK 55
SLK Back Pressure Too High?

I ran my SLK 230 on a Mustang Dyno and was very dissapointed with the results. The run indicated 142 BHP...I would have at least hoped for 160 BHP. Now...this was a Mustang Dyno and I do live at elevation (3,200 ').

I later did a back pressure test by removing the O2 sensor and got 5.75 psi @ WOT 5,800m rpm. Is this too much at this engine speed.

Help!!
Old 06-09-2003 | 08:14 PM
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2005 SLK 55
Dyno Chart

OOPS I meant 149.5 HP. I've also attached the Dyno chart.
Attached Thumbnails SLK Back Pressure Too High?-dyno-run-1.gif  

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