Merc63

What air filters are you stage 3 guys running??

Mine does NOT like the KNs, they must screw with the MAF reading.

I think mine runs best with charcoals and stock filters.

mr747

Afe but I'm not running a stage 3

aussie e55

afe on my last 2 amg cars no problems

cls55

Will you please tell us what does your car do or act with after market filters.
Thank you

BAD430BENZ

i had the K&N replacement on my oem boxes with my Stage 3 and it worked perfect . of course , i switched to Keith's ram air setup with huge K&Ns and it's still working great

Merc63

Mine doesnt like the KN at all... I think it screws up the MAFs reading.

Blown63

I use kn's and it works great but I know exactly what your going through which is why i will never get oiled filters again!

BAD430BENZ

exactly....just get the K&Ns and rinse them off to get the oil off

Merc63

Blown did you have issues with them, can you describe?

Merc63

Got the charcoals and stock filtersin. Cars pulling like a 747.

tfthach13

I've been running Weistec's dry filters for a few months now (stock car) and they are feeling great! No CELs but that's because I still have the charcoals intact.

almoamg

I just fitted a pair of BMC filters to mine last night and thought it was a bit juddering this morning but that could just be warm up. Looks like we don't have the charcoal filters on our UK cars from what I saw when I took mine apart.

BAD430BENZ

i would recommend to take the charcoals out and install some K&Ns . every little bit of air helps with these monsters

Blown63

I haven't had any issues since the SC install but I had problems before with them, I would get hesitation in throttle and jerky/weird gears changes. Is this what you are experiencing to?

Merc63

Exactly what I get. Cars perfectly fine with stock filters. Put KNs in an it feels like I lost 100hp.5 its jerky and shifts weird.

Merc63

Even if I have the stock filters and no charcoals I still get a few jumpy spots.

jrcart

Why are you not runing the Weistec filters, they were developed and tested for the Weistec SC's.

Do not run K&N's the oil will screw up your maf's

Merc63

Its not the oil. Even the stock filter with no charcoals will cause issues for me.

Blown63

Merc I know how you feel, I think we should make the switch.

I have not been driving my car hard since I have been breaking her in I am almost at 1,000 miles and need one last oil change. But yesterday I was doing a half throttle pull on the highway (which is a bit more then i have been pushing her) and I felt a bit of a hiccup in the throttle.

I agree with Jrcart we should just switch and use Weistec's filter. I know you say its not the oil since you have changed back to stock but there can still be oil on the Maf's from before?? idk? Did you clean the Maf's between swaps?