The1stWright

Been debating grabbing some MBH or Power Agency headers, I wanted to ask here first if you all think it's worth the cost to install? Currently my car just has the Eurocharged tune and BMC filters.

baldmike73

i have a set of PLM Shorties if interested? BNIB - never installed - car is for sale -

cadeca

I have MBH long tube headers on my M113 SLK55 and was very happy with the quality, sound and dyno results. I had to get a tune to avoid codes, but was happy with the results.

sunil517

I made more power with these. I had KNN and 3" from header to resanator and everything else stock. I had OE tune...
My friend had LT, pulley kit, OE, KNN and I made more WHP then he did.
looking back it is not worth unless you get them at a good price and do the install yourself.. You will need a lift for the headers and small hands but it is an easy DYI with correct tools and lift...

Celicasaur

I'm curious....what are you making power wise with these mods?

Generally speaking, you're looking at an increase of around 40whp through most of the rev range and around 25WTQ throughout. Seems quite worth it to me

sunil517

The only thing I wanted to change was to add a x-pipe.
From Kleemann Headers to KM Cats to 3" bolted to stock resonator and stock cat back...best sounding AMG I ever had...

Celicasaur

Ahhh you had high flow cats on yours ^ ?

Maybe that's why it sounded so good. Mine is catless and while my friends love it, I'm a little resentful of it. I think I'll definitely fit some 100 cell cats soon to bring back some of the AMG originality. It sounds a bit too old school for my liking.

Thanks for posting your power figures btw

sunil517

3 bolt flange to the header and V-Band to exhaust system.
after about 2 yrs one cat came apart KM did not have them in stock so I gutted both in the end. sold the car to a friend. NO CEL until the batter went dead.Afte that CEL for no cats.. He tricked the ECU by installing O2 extenders....
If I had installed the xpipe I would gain some TQ but lower the top end RPM sweep.

gaspam

i had agency power longtube headers on my c63 w/ eurocharged tune and it was definitely worth it... they are crazy loud though so if you dont mind loud then go for it, but if you want stealth quite then probably skip the LTH