[ARKONE]

So I just got my car dynoed at Ice Cream Cruise 2014 here in Omaha, NE.

The runs were 325, 362, and 350. I put in a BMS Stage 1 kit earlier in the day so I was expecting something like 410+. Any reasons as to why it's so low?

[alextremo]

What was your baseline?

[The_Transporter]

What kind of dyno?

[Boss330]

Did you literally put in the BMS the same day?

Someone with experience on the BMS and 550i can probably help out here, but I have seen that a piggyback tune can need a bit of driving before it "settles". It manipulates signals to the DME, which might confuse the DME for some time before it adapts (for instance it needs to adapt and increase fuel flow according to a higher MAF reading, even though the DME still see stock boost (because boost signal is manipulated into the DME)). This doesn't make sense to the DME at first, because with the boost level the DME sees at X rpm, the MAF should not be so high and it should not need to supply that much fuel... However it will adapt and increase fuel flow so that it matches the MAF reading and doesn't lean out the engine.

You should drive it for a while before dynoing would be my advice

[550Reasons]

It took mine a couple runs for it to adapt, I havent dyno it yet, but a couple things...

you have a 2011, which are known to have injector problems, that can be one cause, my buddy had his 11 550 dyno and it made high 400s then injectors went right after that run and then it was only making high 300s.

another thing is the altitude in Nebraska is around 1,100 feet above see level, shouldn't matter much but keep it in mind when comparing to others.

[ARKONE]

Originally Posted by alextremo

What was your baseline?

I don't have one. I wanted to get a baseline done on Friday but my car was in the shop for an extended amount of time to get a radar detector installed.

[ARKONE]

Originally Posted by Boss330

Did you literally put in the BMS the same day?

Someone with experience on the BMS and 550i can probably help out here, but I have seen that a piggyback tune can need a bit of driving before it "settles". It manipulates signals to the DME, which might confuse the DME for some time before it adapts (for instance it needs to adapt and increase fuel flow according to a higher MAF reading, even though the DME still see stock boost (because boost signal is manipulated into the DME)). This doesn't make sense to the DME at first, because with the boost level the DME sees at X rpm, the MAF should not be so high and it should not need to supply that much fuel... However it will adapt and increase fuel flow so that it matches the MAF reading and doesn't lean out the engine.

You should drive it for a while before dynoing would be my advice

I put in the same day. I was told a few high throttle runs would settle everything. However I might just try it again in a few weeks.

[ARKONE]

Originally Posted by 550Reasons

It took mine a couple runs for it to adapt, I havent dyno it yet, but a couple things...

you have a 2011, which are known to have injector problems, that can be one cause, my buddy had his 11 550 dyno and it made high 400s then injectors went right after that run and then it was only making high 300s.

another thing is the altitude in Nebraska is around 1,100 feet above see level, shouldn't matter much but keep it in mind when comparing to others.

Huh. I've heard of injector problems but my car has none of those symptoms such as lurching or any sort of check engine light.

I will have them double check those at my next service in like a few thousand miles. I was looking to see around 400 w/ my BMS factoring in the minor elevation.

[550Reasons]

Originally Posted by tfa372

I put in the same day. I was told a few high throttle runs would settle everything. However I might just try it again in a few weeks.

That could be it, just drive it around and get on it when you can, and after like a tank of gas go again and you might get better results.

Originally Posted by tfa372

Huh. I've heard of injector problems but my car has none of those symptoms such as lurching or any sort of check engine light.

I will have them double check those at my next service in like a few thousand miles. I was looking to see around 400 w/ my BMS factoring in the minor elevation.

not saying thats the issue, just saying tho, Im glad to see theres someone who doesnt have the issue

[ARKONE]

Originally Posted by 550Reasons

That could be it, just drive it around and get on it when you can, and after like a tank of gas go again and you might get better results.



not saying thats the issue, just saying tho, Im glad to see theres someone who doesnt have the issue

Pssh. :knockonwood: I still have another another 12k miles or like 6 months left on my free maintainece and warranty. I'll start shopping around for an extended warranty because there is no way I am driving a 550i without a warranty on it.

[FeckinSpaceman]

Originally Posted by tfa372

Pssh. :knockonwood: I still have another another 12k miles or like 6 months left on my free maintainece and warranty. I'll start shopping around for an extended warranty because there is no way I am driving a 550i without a warranty on it.

Any check engine light or rough idle?

I recommend getting it checked out, there is an updated part to replace the injectors so if even one of the injectors is misbehaving they will have to replace them all. ....and there is a different spark plug that needs to get updated with the new injectors. ....so all new plugs as well. ...all under warranty

[ARKONE]

Originally Posted by FeckinSpaceman

Any check engine light or rough idle?

I recommend getting it checked out, there is an updated part to replace the injectors so if even one of the injectors is misbehaving they will have to replace them all. ....and there is a different spark plug that needs to get updated with the new injectors. ....so all new plugs as well. ...all under warranty

Nope. nothing out of the ordinary. Although, not sure what the ordinary is for a F10. I will make sure everything is up to par before the warranty though.

[David 12]

Hey I am in Omaha as well. I considered a 550i but went with the M5 due to the great lease rates.

I am thinking about adding a BMS tune as well and I was wondering if you did the install yourself or use a local shop.

I also wouldn't mind getting a base dyno done on my car so let me know if there is room for one more if you get an additional dyno.

Take care and be careful with the lower temps. I did a full throttle run on the interstate today and my traction control lit up at 60 mph! The M5 definitely has some power.

I checked over on N54tech and it looks like Terry tested a 2011 550i and it put down 392 hp stock and 425 hp with a stage 1 tune. I think that is on a dynojet.

Dave

[badblack550xi]

Originally Posted by David 12

Hey I am in Omaha as well. I considered a 550i but went with the M5 due to the great lease rates.

I am thinking about adding a BMS tune as well and I was wondering if you did the install yourself or use a local shop.

I also wouldn't mind getting a base dyno done on my car so let me know if there is room for one more if you get an additional dyno.

Take care and be careful with the lower temps. I did a full throttle run on the interstate today and my traction control lit up at 60 mph! The M5 definitely has some power.

I checked over on N54tech and it looks like Terry tested a 2011 550i and it put down 392 hp stock and 425 hp with a stage 1 tune. I think that is on a dynojet.

Dave

Stage 1 is so easy to install a toddler can do it...

[ARKONE]

Originally Posted by David 12

Hey I am in Omaha as well. I considered a 550i but went with the M5 due to the great lease rates.

I am thinking about adding a BMS tune as well and I was wondering if you did the install yourself or use a local shop.

I also wouldn't mind getting a base dyno done on my car so let me know if there is room for one more if you get an additional dyno.

Take care and be careful with the lower temps. I did a full throttle run on the interstate today and my traction control lit up at 60 mph! The M5 definitely has some power.

I checked over on N54tech and it looks like Terry tested a 2011 550i and it put down 392 hp stock and 425 hp with a stage 1 tune. I think that is on a dynojet.

Dave

As badblack put, it was easily installed by me. It took about 15 minutes since I took my time and double checked before doing any step, but I got her done myself. Sublime (off 132nd and L) is where I am getting the dyno done soon.


BTW, what color do you own? I go to Creighton and see a black M6 all the time here. I saw a sakhir orange m5 in my parent's neighborhood out in West O. Is that you?


One thing about Omaha is, if you plan on driving my Sarpy, make sure you get a good radar detector system installed because they are REALLY cracking down ever since ricers started doing speed runs down West Center.

[ARKONE]

Originally Posted by FeckinSpaceman

Any check engine light or rough idle?

I recommend getting it checked out, there is an updated part to replace the injectors so if even one of the injectors is misbehaving they will have to replace them all. ....and there is a different spark plug that needs to get updated with the new injectors. ....so all new plugs as well. ...all under warranty

And you're right. Pulling into my garage and the car was vibrating a lot. Like the water bottle in my cupholder was shaking as if I had bass all the way turned up. Pulling into my spot and check engine light came on.

Engine Malfunction: Reduced Power


I thought it might have been the BMS, but nope. Pretty sure it's the fuel injectors.

Fun fact tho: I am out of warranty. I thought I had till March or April of 2015.... nope. August of 2014. FML.

If I have to pay for this, I defeintely won't be able to order my Meisterschaft exhaust....

[r33_RGSport]

Originally Posted by David 12

Hey I am in Omaha as well. I considered a 550i but went with the M5 due to the great lease rates.

I am thinking about adding a BMS tune as well and I was wondering if you did the install yourself or use a local shop.

I also wouldn't mind getting a base dyno done on my car so let me know if there is room for one more if you get an additional dyno.

Take care and be careful with the lower temps. I did a full throttle run on the interstate today and my traction control lit up at 60 mph! The M5 definitely has some power.

I checked over on N54tech and it looks like Terry tested a 2011 550i and it put down 392 hp stock and 425 hp with a stage 1 tune. I think that is on a dynojet.

Dave

Dave, you won't regret going with BMS. It is by far the most bang for the bucks.
Let me know if you need a good deal on them.

Originally Posted by tfa372

And you're right. Pulling into my garage and the car was vibrating a lot. Like the water bottle in my cupholder was shaking as if I had bass all the way turned up. Pulling into my spot and check engine light came on.

Engine Malfunction: Reduced Power


I thought it might have been the BMS, but nope. Pretty sure it's the fuel injectors.

Fun fact tho: I am out of warranty. I thought I had till March or April of 2015.... nope. August of 2014. FML.

If I have to pay for this, I defeintely won't be able to order my Meisterschaft exhaust....

@tfa372, usually for something like this, it should be covered even if you are out of warranty since it is a known problem. It was the same case with HPFP with N54 motor on E9x 335 and E6x 535. Until they changed yours to the updated version, they should replace it at no cost. You should ask your dealer, if they still say no, try to contact BMW NA.

[FeckinSpaceman]

Originally Posted by tfa372

And you're right. Pulling into my garage and the car was vibrating a lot. Like the water bottle in my cupholder was shaking as if I had bass all the way turned up. Pulling into my spot and check engine light came on.

Engine Malfunction: Reduced Power


I thought it might have been the BMS, but nope. Pretty sure it's the fuel injectors.

Fun fact tho: I am out of warranty. I thought I had till March or April of 2015.... nope. August of 2014. FML.

If I have to pay for this, I defeintely won't be able to order my Meisterschaft exhaust....

Ouch, that sucks. I hope you can get it covered.

[ARKONE]

Originally Posted by FeckinSpaceman

Ouch, that sucks. I hope you can get it covered.

Just called BMW NA. They noted it on my account and will find out more after the diagnosis tomorrow.

[David 12]

My M5 is black sapphire metallic with black 343 wheels. Unfortunately, I have not been driving it too often. I will say that it gets a lot of respect. It is really in its element on the interstate say from 60 to 100. It is fast now but I can't imagine how fast a BMS stage 1 tune will be.

Good luck getting your car sorted out, is it at Markel?

I have always heard good things about Sublime, have you been happy with them?

Take care,

Dave

[ARKONE]

Originally Posted by David 12

My M5 is black sapphire metallic with black 343 wheels. Unfortunately, I have not been driving it too often. I will say that it gets a lot of respect. It is really in its element on the interstate say from 60 to 100. It is fast now but I can't imagine how fast a BMS stage 1 tune will be.

Good luck getting your car sorted out, is it at Markel?

I have always heard good things about Sublime, have you been happy with them?

Take care,

Dave

Yeah, I just dropped it off at Markel and had a shuttle take me to my parents house here in West O. I have no classes today or tomorrow so I'll probably just stay here for the night.

Took off the BMS and damn, my 550i just felt slow... It was fine for the first few miles before the error kicked in. It was my 550's first time at Markel and all the service guys had their jaws on the floor when I pulled it in.

What's you main DD if it's not your M5?

[David 12]

It seems like the service guys at Markel are pretty good. I had my 1200 mile service done there and it turned out fine.

My wife has a lexus SUV that she rarely drives so I take that sometimes. I also have a toyota rav 4 for the winter. I just ordered a set if winter tires and wheels for my M5 from Tire Rack. Not sure how the M5 will do in the snow but that's why I have the awd vehicles.

I have been driving the M5 more lately, the turbos really like the cooler weather!

I am leaning toward waiting for the spring to tune the car. With the kind of winters we get, it makes sense.

Dave