FastE

So what would you do if you wanted to beef up your 2011 E550?

Thoughts welcome!

(I have the 5.5L No Turbos)

BenzV12

Renntech , Carlsson performance boxes or I would ask vendors in MB World about performance upgrades

Munich77

For the natural aspired V8 there is not much you can do for power increases without serious cost. I would probably do a performance chip, perhaps an intake, and headers. If you want serious power you would probably have to supercharge it or bore out the engine. Take a look at Brabus, Kleeman, or Renntech.

FastE

I hadn't thought of Kleeman - thanks.

stale-bread

For starters I would pick up a SprintBooster. Instant throttle response. I'm debating the RENNtech ECU upgrade like Munich77 suggested. Least expensive mods to start with.

stevenross

Can the sprinter be used on a 14e50 naturally aspirated? What hp gain does it offer and how much does it cost?

stale-bread

Just checked website and '14 is not listed but I would call. No HP gains, just throttle response.

Roughly 20HP gain on '11 for 1,500.00 for RENNtech.

http://www.renntechmercedes.com/www/node/659

SolidGranite

These mods just aren't worth the money with this engine. Best bet would be to buy a 2012.

stale-bread

Really? The OP asked about a 2011. Telling someone to buy a new vehicle instead of investing in mods to his current ride can be considered rude. Why don't you just tell him to buy Lambo Huracan while he's at it.

Munich77

Unfortunately a naturally aspired engine is not as tunable as a turbo. Turbos are cheap to flash and get insane power upgrades.

bob2011

Consider OE tuning, had a ecu tune on my 350(2011) and plan to get a ecu tune from them again on my e550, for 500$, its a unbeatable tune for this engine, since the 5.5 doesn't have turbos. .

Tjdehya

There is very little hp to be gained from the 5.5, so to get further gains may require a co$tly investment. Instead of spending $10k to get 20hp SolidGranite was suggesting that the OP spend that $10k on a trade for the same car with the tt engine.

I assume that the OP doesn't intend on spending that much money but it was just a thought from SolidGranite. Nothing rude about that.

usamuscle

Nothing will be worth the money. Like most have said you would spend thousands of dollars for minimal gains.

SolidGranite

Thanks guys.

Stale-bread: I stand behind my advice. This engine isn't worth the major dollars it will cost to add horsepower. He can probably save money by going with a 2012. No need to lash out man. Just tryin' to help.

stale-bread

My apologies SolidGranite.

SolidGranite

No worries.

PeterUbers

I'm sure there's an //M logo on ebay, fellas, that'll give you an eeeeasy 100hp for your 2011 5.5L engine... trust me, I know a guy...

Munich77

I think the NISMO GT-R logo adds more power.....

AudiA4Turbo22

Firstly, I'm surprised that someone actually wants more power out of their E550.

I am a MASSIVE horsepower freak, and I own a 500+HP Audi, but every time I put my foot down in my E550 the last thing I think of is I need more power.

However, the best bang for your buck is getting it tuned by OE Tuning. It will take the horsepower up to the 412hp range and torque to about 426 ft lbs. That's some serious power from an N/A engine.

Another option is to upgrade the cams, it would cost about $2,000 to do this and it would yield you another 40-50HP. Headers and Hi Flow Cats would also yield you another 15-20HP.

Anything more and they're right, just trade it in for either a newer one or a 2010 E63

benhays98

We have an identified cam swap option?

AudiA4Turbo22

Yessir!

http://www.*********.com/showthread....460-horsepower

AudiA4Turbo22

Here's another option:

http://www.gmpperformance.com/index....ail&PID=318231

benhays98

So $10K + the cost of install, for cams, headers/full exhaust and a tune..and you only pick up 100hp if you are lucky..wow..

Looks like an E63 should be the next car on the list..haha

D&G

The E550 has plenty and more hp an average person would need. It is a beast of its own. Not to break the bank would be to throw on the bolt ons such as intake, headers, and a performance exhaust. Speaking of cold air intake, anyone installed one?

benhays98

headers and exhaust could set you back ~$3K-5K + install costs(if needed)..