Total price $160 installed for the mandre bent X-pipe kit.
Sound:
The car sounds FANTASTIC. Barely different at idle, slightly deeper sound. There is ZERO drone (X-pipes should have even less drone than just a straight pipe resonator pipe b/c of the of its resonance cancelling properties). However when you floor it you still get a healthy grunt. The car sounds great at full throttle but honestly it was slightly quieter than I was expecting. However, it sounds extremely high class and proper for the car its on. NO unwanted drone or etc.
Performance:
I haven't had a chance to really put it through the paces, but butt dyno definitely felt something the first time a stomped on it. It should take a few days for the ECU to adapt to the X-pipe (if infact there are any flow changes). Not going to say for sure until i get definitive dyno proof. But so far, I LOVE it . For the price its a fantastic mod.
Stock Exhaust Components:
This is where I get to say "I told you so" . Just as I had predicted from day one, there is infact NO crossover throughtout the ENTIRE exhaust system. The interior shots of the resonator are 100% proof of that. So the X-pipe SHOULD in theory do something (again gonna wait for dyno evidense). I am very shocked that AMG did not put any crossover of any kind throughout the entire E55 exhaust system but perhaps this may be a good opportunity to pick up a few ponies.
The Stock resonator weighs a whopped 26.130 lbs (weighed on my super accurate scientific digital scale). The X-pipe and 2.25 mandrel bends weight roughly 2lbs so the overall comes out at about 24lbs in weight savings in the middle of the car (between the two axles). This in addition to the 50lbs i saved from spare tire and tools and etc brings the overall weight savings up to 75lbs. Now if i chose to do the optima battery i could easily break the 100lb barrier which would really help out performance for every little sacrifice made.
This new cold front is definitely a warm welcome (no pun intended ). At first it took a while for the ECU to adapt (maybe about 20-30 min of driving). But tonight I was lugging around 5 passengers and EVEN with 5 passengers the car was slamming everyone into their seats (with 5 people it feels like it used to with just 2 people). I was extremely impressed with the torque responce throughout the power band. At night time it got down to under 40 degrees when i was driving by myself and finally when i got a few open stretches of road i floared it and the car just pinned me to my seats like it never has before. And more importantly the car pulls hard all the way to redline. It could be the extremely cold weater or even psycological (though i highly doubt it). I really do feel like something has changed in the overall behavior of the car. Also this technically should help make the A/F readings more accurate since the tail pipe sniffer will now acurately get a mixture of both cylinder banks instead of just one. I am trying my best to compile as much data as possible. Based on how cheap it is to do this mod I decided its not economically feasible to mass produce a set b/c you can make it on your own for so cheap. as a result I just said forget it and people can just copy what I did instead for $160 installed.
In this cold, getting traction in below 45 degrees can be entertaining lol. With what feels like more power, and colder temps (tires & asphalt) even with traction control fully engagued I got the tires spinning up to about 15-20mph, definitely alot of fun .
I cannot wait to get dyno's on monday. Hopefully the weather is good and the car is performing at max capability by then (i hear its usually 3 full days to adapt so that should give me just enough time before the dyno to get the car up to maximum potential). Also, I feel like crusing around is much easier (much less throttle required) almost like there is more torque in part throttle applications (again this may also be the extreme cold, but who knows).
Sound: Tonight the car sounded AMAZING. The car has a deep thunderous grunt, its not a load roar per say but it just sounds like thunder is following me around everywhere i go haha. Its a VERY deep grunt/ roar. Its hard to describe but its very welcome. All my friends commented on how refined yet meaty the exhaust sounded, not too loud but sounds great with windows down and to outsiders. Its almost so low that the human ear can barely year it (if you know what i mean). and no annoying unwanted resonance at certain rpms.
Overall i couldn't be happier with the results. The car pulls tremendously strong and sounds exactly how a OEM E55 AMG should have sounded from the factory. I cannot wait to see the dyno results, hopefully this will help eleviate some of my A/F issues (assuming the numbers i got originially were even accurate). Take care boys
~OmeyHomey~
Last edited by omeyhomey : 12-02-2006 at 02:37 AM.
More good news. Dyno appointment made for monday afternoon!! I guess I am finally going to be able to answer the question we've all be asking for some time now. Hopefully the dyno evidense is conclusive. anyways guys, can't wait
Drove the car again tonight and it seems the car is really liking the X-pipe alot, I have a feeling it may have an impact on the A/Fs. I managed to get the tires to spin all the way to the top of 1st gear and part of 2nd with traction control on haha. Man this car is like a totally new beast. The sound is still very refined though i have noticed it getting slightly louder. Overall I'm still very happy and no negative side effects (yet). just trying to be as scientific as possible and be honest on both the pro's & cons side but honestly I have yet to see a single con yet. We will all finally find out Monday what the final verdict is, my dyno is at 5pm on monday so i should post results by monday evening. I have a feeling the torque gains are going to be nice. Anyways later guys.
I put a 2.5" X-pipe on my 2000 E55 also, but , my set-up is slightly different then yours. First, my X-pipe is a true X-pipe (not that yours is bad).....it has a true crossover path instead of two pipes connecting in parallel. (I don't even know which is better) I also had my post cats removed.
Let’s just say that it is boarder line too loud now that I remove the resonator. Do I feel a difference? Does a bear sh*t in the woods?
Oh, by the way....my name is Amgdriven. If you any of you go on MBWorld, you know who I am.
I put a 2.5" X-pipe on my 2000 E55 also, but , my set-up is slightly different then yours. First, my X-pipe is a true X-pipe (not that yours is bad).....it has a true crossover path instead of two pipes connecting in parallel. (I don't even know which is better) I also had my post cats removed.
Let’s just say that it is boarder line too loud now that I remove the resonator. Do I feel a difference? Does a bear sh*t in the woods?
Oh, by the way....my name is Amgdriven. If you any of you go on MBWorld, you know who I am.
My X-pipe is better for high end flow and still allows for the pulses to combine for maximum scavenging affects. I know which X-pipe you are talking about, its an older style X-pipe (where it originally got its name b/c it literally looked like an X), but where the gasses converged its a more abrupt mixing of the air versus a smooth merge. thats why i chose this magnaflow one instead. Cat removal isn't good for USA cars b/c of emissions testing but honestly I don't want to crazy mod this car, im selling it in May anyways, I just want to have alittle fun with it before I sell it in May.
Either way both X-pipes do the same thing, one just does it more smoothly thats all. The key thing to note is that AMG stock exhaust does NOT have any crossover at all (which still shocks me).
.... and like you said.... "Do I feel a difference? Does a bear sh*t in the woods? "
My X-pipe is better for high end flow and still allows for the pulses to combine for maximum scavenging affects. I know which X-pipe you are talking about, its an older style X-pipe (where it originally got its name b/c it literally looked like an X), but where the gasses converged its a more abrupt mixing of the air versus a smooth merge. thats why i chose this magnaflow one instead. Cat removal isn't good for USA cars b/c of emissions testing but honestly I don't want to crazy mod this car, im selling it in May anyways, I just want to have alittle fun with it before I sell it in May.
Either way both X-pipes do the same thing, one just does it more smoothly thats all. The key thing to note is that AMG stock exhaust does NOT have any crossover at all (which still shocks me).
.... and like you said.... "Do I feel a difference? Does a bear sh*t in the woods? "
I picked the X-pipe with the crossover due to needing some back pressure because of the post cat removal.
Correction on the emissions. I passed a week ago. No problems. No problems with the ECU either....the post cats are not monitored. If I didn't remove my cats, I would of picked a less restrictive X-pipe like yours.
. For the price its a fantastic mod. 
). At first it took a while for the ECU to adapt (maybe about 20-30 min of driving). But tonight I was lugging around 5 passengers and EVEN with 5 passengers the car was slamming everyone into their seats (with 5 people it feels like it used to with just 2 people). I was extremely impressed with the torque responce throughout the power band. At night time it got down to under 40 degrees when i was driving by myself and finally when i got a few open stretches of road i floared it and the car just pinned me to my seats like it never has before. And more importantly the car pulls hard all the way to redline. It could be the extremely cold weater or even psycological (though i highly doubt it). I really do feel like something has changed in the overall behavior of the car. Also this technically should help make the A/F readings more accurate since the tail pipe sniffer will now acurately get a mixture of both cylinder banks instead of just one. I am trying my best to compile as much data as possible. Based on how cheap it is to do this mod I decided its not economically feasible to mass produce a set b/c you can make it on your own for so cheap. as a result I just said forget it and people can just copy what I did instead for $160 installed. 
Linear Mode
