Water injection issues?

[Day Laborer]

Originally Posted by RandyC54

Pat already had his back to the dealer, and they changed out the filter also. He seems to think there is a difference, and some amount of water is being used in around-town driving, but we have not been to the track since. I'm taking mine in to the same dealer this week for the treatment. Fingers crossed!

Day Laborer, what kind of times are you seeing so far at VIR with MDM off and additional balls?

Since I only did DSC off for two sessions (and ran out of gas halfway through the last session) my lap times looked like this from the moment DSC was turned off - 2:15, 2:14, 2:13, and 2:12.30 on the last session. My virtual best was 2:08 and I've seen an average speed of 93 mph. I believe I can get down to 2:10, maybe 2:09 (wishful thinking) with my limited skill level in this car. An experienced driver would probably do 2:01-2:02 haha

MDM was so intrusive that it would flash at me when I was my steering was straight, full power, at the crest of the back straight and that the kink on the front straight. I've never had that issue with other M cars

[KKSigs]

Just a heads up I took my GTS to the dealer the other day and they checked the water injection pressures and it was low as well so they replaced the whole filter. I spoke to my service tech and he said the filter was clogged.

[RandyC54]

Originally Posted by KKSigs

Just a heads up I took my GTS to the dealer the other day and they checked the water injection pressures and it was low as well so they replaced the whole filter. I spoke to my service tech and he said the filter was clogged.

So how the hell are all of these filters getting clogged? Is it a problem from the factory? Can't wait to get that handled and see what the car is really supposed to be like!!

[FlyingLow78]

Originally Posted by RandyC54

So how the hell are all of these filters getting clogged? Is it a problem from the factory? Can't wait to get that handled and see what the car is really supposed to be like!!

From what I can see in TIS, the water filter is really small, so it clogs easily.

https://www.newtis.info/tisv2/a/en/f...nce/1VnYk1HgIa

There is also a maintenance note specifying it must be replaced every 12,000 km.

[Day Laborer]

Originally Posted by KKSigs

Just a heads up I took my GTS to the dealer the other day and they checked the water injection pressures and it was low as well so they replaced the whole filter. I spoke to my service tech and he said the filter was clogged.

Doesnt it feel like a new car now? haha..I swear it felt like way more power to me

[schnell325]

I’ll be adding this check point to my list when I take my GTS in for her spring oil change ✔️

[KKSigs]

Originally Posted by Day Laborer

Doesnt it feel like a new car now? haha..I swear it felt like way more power to me

Feels a little snappier but haven't really got to get on it yet since it's still too cold here in Indy

[KKSigs]

By the way this the service repair write up

[VCP]

I have a theory that this could be due to break in time of pump, valves, ect. I'm sure assembly lube or some variant would have been used in this system. Hopefully getting to the 12000 mile interval is a reality after filter is changed for first time. There is just no logical reason for this to happening if using distilled water. Time will tell. Perhaps that filter should have been part of break in service. BMW is living in a hindsight realm with water injection as it is a first on production cars.

[CanAutM3]

Originally Posted by RandyC54

So how the hell are all of these filters getting clogged? Is it a problem from the factory? Can't wait to get that handled and see what the car is really supposed to be like!!

Could it be from the use of non-distilled water?

[VCP]

Originally Posted by CanAutM3

Could it be from the use of non-distilled water?

First question I asked the few that have contacted me. All used distilled.

[BMW9]

Originally Posted by VCP

I have a theory that this could be due to break in time of pump, valves, ect. I'm sure assembly lube or some variant would have been used in this system. Hopefully getting to the 12000 mile interval is a reality after filter is changed for first time. There is just no logical reason for this to happening if using distilled water. Time will tell. Perhaps that filter should have been part of break in service. BMW is living in a hindsight realm with water injection as it is a first on production cars.

We're any of these cars sitting on the showroom floor for 2 years? I'm a bit concerned because my car is one of them. I had the dealer service the car before I bought it. But I didn't think of asking them to check the filter for the distilled water. I haven't used much water but it's still being driven with little load so will have to wait and see.

[Day Laborer]

Easiest way to check is a scan tool like Carly App OBDII

[RandyC54]

I have distilled water ready to use, but have not been able to put any in yet in 1900 miles. It's going in for filter replacement this week, then maybe I can start using some. My car sat at the dealer for about 45 days total before I got it.

[VCP]

Unless they were sitting dry for extended periods I still have a hard time seeing how the filters could clog so quickly. This will be interesting to see how long they last for those that have had them replaced.

Originally Posted by BMW9

We're any of these cars sitting on the showroom floor for 2 years? I'm a bit concerned because my car is one of them. I had the dealer service the car before I bought it. But I didn't think of asking them to check the filter for the distilled water. I haven't used much water but it's still being driven with little load so will have to wait and see.

Originally Posted by RandyC54

I have distilled water ready to use, but have not been able to put any in yet in 1900 miles. It's going in for filter replacement this week, then maybe I can start using some. My car sat at the dealer for about 45 days total before I got it.

[Darth One]

the day after buying the car i went out and bought 5 gallons of distilled water. a month and three tankfuls of fuel later, i've only used 3/4 of a gallon. no track time, only street driving, but some of that street driving involved...ahem, exploring the limits of street driving.

now i'm at a loss on where to store all this water!

[VCP]

That seems like reasonable use to me. LOL remember when the GTS talks first began and some actually factored the nuisance and cost of water into their opinion of the GTS The only nuisance is when it is not using any

Originally Posted by Darth One

the day after buying the car i went out and bought 5 gallons of distilled water. a month and three tankfuls of fuel later, i've only used 3/4 of a gallon. no track time, only street driving, but some of that street driving involved...ahem, exploring the limits of street driving.

now i'm at a loss on where to store all this water!

[BarryB]

My experience has been 1 H2O tank per 5 gas tanks on the street and 1:1 on the track and the GTS is very thirsty on track so she drinks plenty water when excersised properly :-)

[redrumm3]

Originally Posted by BarryB

My experience has been 1 H2O tank per 5 gas tanks on the street and 1:1 on the track and the GTS is very thirsty on track so she drinks plenty water when excersised properly :-)

Ditto for me.

[delfunk]

My water injection system works well but on three occasions, my car still was accelerating after I let my foot off the gas for 2-3 seconds. I think It could be the water injection system not shutting off and malfunctioning. The water sprays right past the throttle body. Any ideas? The BMW engineer said it's normal for all turbo cars to accelerate after you let your foot off the gas for a second. I was floored and told him thats why there is a throttle body and a blow off valve. Any ideas? Another GTS owner has experienced the same issue as well.

[FlyingLow78]

This is not the same topic being covered here. The thread you created was enough.

[RandyC54]

Replacing the filter on Pat's was not enough to fix it. Still working on a permanent solution before I take mine in. Anybody else made any progress??