luiscalpa

hi Im thinking this saturday to put the x pipe and remove the primary cats, wright now I dont have the secondary cats, and I have stock intake filters. My question is does it will sound to loud?
thanks
luis..........

AMS Performance

Hey Luis,

I would not eliminate primaries, it will be too raspy and you will get CEL if it is a USA spec car. Upgrade your air filters to K&N filters. Keep the primaries and just put in the X-pipe. The X-pipe will definitely help give you more power on the top end and improve sound significantly without too much resonance. hope that helps

~AMS~

Fabio D

I agree with AMS luis. if your car is an US spec you will have a CEL if you remove the primarys, anyway, my car is an euro without primarie & secons, deleated with direct pipe & the sound of the car realy are very close to the stock (i conserve the center & final resonator for now)

Hope that help

Fabio Daniel

luiscalpa

thanks guys!!!

pinoyk20

i guess the best combo mods would be the ams package with header,pulleys, ecu tune and xpipe alos primary and secondary hi flow cats! and the good thing is thta its bolt on power! AMS FTW!!!

armaniE55

+1 Can't get any easier than that


Armani

Silver Logic

True. My friend has a euro car and has deleted all his cats, and kept his headers, resonator, and muffler stock. You can hardly tell any sound difference from stock.

pinoyk20

is that the e60 sir? heheeh when will you be orderin the pulleys sir silver logic? thakns

Silver Logic

No, E50 and E55. The E60, has all his cats and resonator removed. Initially, he was basically running a straight pipe from the factory headers all the way to his stock muffler. When he realized he lost some torque, he put in a X-pipe. On idle, the E60 sounds normal, but when he his revs get higher, it sounds loud.

Fabio D

Thats correct my friend!, if your car is an Euro spec you can remove all 4 cats & conserve the stock sound (a bit louder, but really a little little bit)

Fabio Daniel

AMS Performance

Removing all 4 cats will let more resonance through but realistically cats make the biggest difference once the cam opens up @ around 3500+, below that it won't make a huge difference in sound. With that said, the car fumes will stink pretty bad and also its terrible for the environment.

On a euro car since you don't have primaries, running high flow 300-cell metal core cats will be comparable running high flow primaries & no secondaries on a US spec car. Just get a set of high flow metal core cats, they are only 180 and there's only 1-2HP difference between that and straight pipes, so might as well eliminate the fumes & preserve the environment for that little of a gain.

armaniE55

Awaiting install•Stiegemeier ported HPS gen1 SC•SLR cams•Coolingmist•Wald EX bodykit•VRP intake spacers•Eisenmann race•Quaife LSD

nicobaires

Oh yeah!!

pinoyk20

thats what i call super mods!!!!

Simon @ evosport

Here is a Product Guide to our mods for M113 5.5L (non Kompressor):

http://www.evosport.com/product/vehi...Z_V8_55AMG.pdf

pinoyk20

cant open the file.....

armaniE55

You need Adobe PDF reader

try this...


http://get.adobe.com/reader/

Armani

Silver Logic

I'm curious, that if one does all these modifications will the reliability and longevity of the engine decrease?

pinoyk20

CAN ANYONE PLS POST whats on the link really cant se it hehehehe

Simon @ evosport

The link works fine. The site just automatically truncates the URL that you see. Make sure you have Adobe Reader downloaded since it's a PDF file. You can also go to our main Product Guide page to select the specific model here:
http://www.evosport.com/product/vehicle/guides


But here's the full link non-truncated to the W210 E55 guide:
www.evosport.com/product/vehicle/guides/MBZ_V8_55AMG.pdf

Eurosport

nm

pinoyk20

when you change the headers, x pipe, exhaust diameter and remove the resaonator and cat converters will it have an effect in the fueling of the car? will the engine lean out or not? can the stock AMG ecu cope up/adjust or match with the mods or do you need a ecu tuning? thanks!

and also another question when you change this parts do you have to reset the ecu? thanks!

Simon @ evosport

It will have an effect on backpressure (so be careful what you change or you could easily lose torque), and yes it could very well make the car run lean depending on what exactly you change pre O2 sensors. The stock ECU can do some adaptation but again it depends on what the A/F look like with the mods. An ECU mod can certainly help add timing and fuel.

No, the ECU will adapt as much as it can using O2/knock sensors.

pinoyk20

oh ok even if i have a euro spec e55 that has 2 o2 sensors only unlike the US models that has 4? will increasing the pipe size from 2.25 to 2.5 increae power and tq or will it have a bad effect? thanks! im planin on putting header, reomve primary and secondary cats install a custom resonator and xpipe and retain the stock muffler... the resonator size will be same as the piping size 2.5inch. will it still make the car run lean? or is it ok with the stock ecu?

Simon @ evosport

The US cars have 2 rear O2 sensors which are sort of backups. The pre sensors are what trigger the knock sensing. If you have 4 cats, remove the rears, remove the resonators, use a shorty header, keep the primary cats. Really no need to enlarge the diameter of tubing unless you are pushing that MUCH more air into the system. But it's hard to tell what will happen until you try.