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CEL after Kleemann flash and headers

2K views 9 replies 4 participants last post by  reddymr 
#1 ·
This afternoon I picked up my newly Kleemanned '05 slk 350. Needless to say, car sounded amazing and had some extra oomph. However, a moment ago I started the car and the CEL was on. The car seems to idle roughly sometimes but not always. Also has a bit of clunking in the front when it idles roughly. Engine and tranny mounts are basically new. I will go check the code tomorrow, just curious if anyone has any insight because I'm a bit worried that this CEL is on.
 
#2 · (Edited)
#6 ·
Hi All


A question about this mod , Are the front two Cats the same rating as the rear two Cats or is its like a master Cat & a secondary Cat , If the same ratings its does not matter which ones are removed the results coming out the tail pipes will be the same from a gases points of view.


Cheers


Andy
 
#7 ·
I know they are called primary and secondary
 
#9 ·
Don't know that my friend, but I know my primary are gone :D
 
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