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Alx · **Re: I need a help with my E55 -** 01-15-2007, 10:56 PM

Spark plugs are no biggie, try to stick with Kleemann for stage 1 upgrade.... They change the pulleys and upgrade the ECU with no red flags if you bring it to MB for service...

I had it all done on my 2003 CL55...

Renntech would be my second choice....

Alx Connoisseur Posts: 6,215 Join Date: Sep 2005 Location: --Poconos, PA.-- 2005 Aston Martin DB9 I drive: I ♣ SEALS Thanks: 1,712 Thanked 941 Times in 424 Posts	Re: I need a help with my E55 - 01-15-2007, 10:56 PM Spark plugs are no biggie, try to stick with Kleemann for stage 1 upgrade.... They change the pulleys and upgrade the ECU with no red flags if you bring it to MB for service... I had it all done on my 2003 CL55... Renntech would be my second choice....