CAI and Rain: Help needed

135i · 10-09-2011, 11:22 AM

So last night coming home from a party the storm from hell rolled in and completely flooded the roads. I had to traverse some pretty flooded streets and I'm kinda freaked that I may of sucked in some water. Any way to know if I'm ok? Do I need an oil change or anything?

Update: AP fault codes

P29D1 - misfire cylinder 5
P29D6 - misfire low fuel

Any ideas? My car seems to be acting like it did when my spark plugs went out. Under full boost I get misfires.

TIA

possible335i2008 · 10-09-2011, 11:27 AM

Unless you were sitting in a puddle that went over your headlights your fine, your car would be missing or having serious problems if you took too much water in, you are more than likely fine but if you really want to play it safe check your filter and clean it, but if your engine hasnt grenaded itself or won't start you haven't taken too much water

Transport3r · 10-09-2011, 11:57 AM

Your engine is fine with takin in some water as long as it doesn't hydrolock. If it's still running. You're fine :thumbsup

caliguy562 · 10-09-2011, 12:29 PM

Oil change if you want to give yourself some piece of mind, but if the engine was stumbling or anything I wouldn't worry about it. Water has to take a pretty long path to get into the intake manifold on these cars. Much longer trip than a na motor

Brey335i · 10-09-2011, 12:53 PM

The water would have had to be halfway up your wheels, into your tail pipes, and been leaking in through the gap between your doors and sideskirts before that filter was completely submerged

You'll be fine. I drove last night too and mine is way lower to the ground than yours. You can always switch to the Dinan intake if you want though.

E90SoFlo · 10-09-2011, 12:53 PM

You're fine, I was forced to drive through a small river last night as well.

Jeff@TopGearSolutions · 10-09-2011, 12:58 PM

For future reference just unhook the charge pipe from the TB and stay out of boost. Temporarily only.

Remember on this car if you suck up water it has to go through the turbo's first.

bboy8282 · 10-09-2011, 01:00 PM

If your car is still working then your fine...ive hydrolocked my old car back in the day and it took like 1.5 sec after going through the puddle before my car shut down on me

Will335i · 10-09-2011, 02:59 PM

I got some misfires on mine when driving through a pretty nasty storm but I also had the inner fender out so the wheel was just throughing water into the pipe. If you didn't experience any problems you should be fine.

ianbiz · 10-09-2011, 03:17 PM

Everyone in FL is dealing with this hurricane flooding lol

Transport3r · 10-09-2011, 04:46 PM

Quote:

Originally Posted by ianbiz

Everyone in FL is dealing with this hurricane flooding lol

Yea dude what is up these past few days? did i miss a hurricane?

Bakeme521 · 10-09-2011, 04:46 PM

If you were to hyrdolock it, trust me you'd know. I it's running you're fine. May want to re oil your filter if it is the oiled kind.

135i · 10-09-2011, 06:33 PM

Thanks for all the responses people. The plot thickens.

Update is I went and ran some errands this afternoon and I noticed under high boost (6000 rpm) I got some misfires and threw a limp mode

It drives fine with normal driving. I'm going to see if there are any fault codes on my AP

Ideas?

Jeff@TopGearSolutions · 10-09-2011, 06:37 PM

Quote:

Originally Posted by Cynical

Ugh the thought of this makes me cringe.
Just Remove the cold air intake cause the minimal gains It provides are not worth the risk, and headaches involved with water IMO.

Had Dinan CAI on my 540.
Used to suck mere drops of water all the time even through their water proof "bag" cover. Used to ruin my MAF sensors all the time

but luckily never hydro locked.

I've had CAI on the past half a dozen cars I've owned without a problem.

The driver is the best defense in avoiding a problem.

I've driven through water up to my door sills without a problem. In hindsight the consumer should be aware of the potential risks and weigh the advantage vs disadvantages especially if they are in a troublesome area.

Dark9T · 10-09-2011, 08:02 PM

Quote:

Originally Posted by possible335i2008

Unless you were sitting in a puddle that went over your headlights your fine,

Water went over the headlights? i hope you know he got a CAI. hehe

135i · 10-10-2011, 11:04 AM

Bump for any ideas about what the codes are about?

Brey335i · 10-10-2011, 11:13 AM

Quote:

Originally Posted by 135i

Thanks for all the responses people. The plot thickens.

Update is I went and ran some errands this afternoon and I noticed under high boost (6000 rpm) I got some misfires and threw a limp mode

It drives fine with normal driving. I'm going to see if there are any fault codes on my AP

Ideas?

Plugs and injectors?

The codes will likely only tell you it's a misfire

135i · 10-10-2011, 11:23 AM

Quote:

Originally Posted by Brey335i

Plugs and injectors?

The codes will likely only tell you it's a misfire

I'm wondering if water is causing the misfires..

Brey335i · 10-10-2011, 11:26 AM

Quote:

Originally Posted by 135i

I'm wondering if water is causing the misfires..

Come over this week. We'll swap your plugs around and see if the misfire follows. Might just be a bad plug.

135i · 10-10-2011, 11:42 AM

Quote:

Originally Posted by Brey335i

Come over this week. We'll swap your plugs around and see if the misfire follows. Might just be a bad plug.

Thanks buddy

I'll buy a new plug too.

10-09-2011, 11:22 AM	#1
135i Cobb Stage 2+/ICarbon/HPF/Stett 41 Rep 488 Posts Drives: E92 335i 6MT Join Date: Aug 2007 Location: Deep in the Heart iTrader: (0)	CAI and Rain: Help needed So last night coming home from a party the storm from hell rolled in and completely flooded the roads. I had to traverse some pretty flooded streets and I'm kinda freaked that I may of sucked in some water. Any way to know if I'm ok? Do I need an oil change or anything? Update: AP fault codes P29D1 - misfire cylinder 5 P29D6 - misfire low fuel Any ideas? My car seems to be acting like it did when my spark plugs went out. Under full boost I get misfires. TIA Last edited by 135i; 10-09-2011 at 10:02 PM..
	Appreciate 0 Tweet Quote

10-09-2011, 11:27 AM	#2
possible335i2008 Major 184 Rep 1,222 Posts Drives: 335i Join Date: Mar 2008 Location: united states iTrader: (10)	Unless you were sitting in a puddle that went over your headlights your fine, your car would be missing or having serious problems if you took too much water in, you are more than likely fine but if you really want to play it safe check your filter and clean it, but if your engine hasnt grenaded itself or won't start you haven't taken too much water
	Appreciate 0 Quote

10-09-2011, 11:57 AM	#3
Transport3r Major 87 Rep 1,262 Posts Drives: 2011 N55 E90 Join Date: Sep 2010 Location: Melbourne, FL iTrader: (4)	Your engine is fine with takin in some water as long as it doesn't hydrolock. If it's still running. You're fine :thumbsup __________________ Josh-
	Appreciate 0 Quote

10-09-2011, 12:29 PM	#4
caliguy562 Lieutenant 8 Rep 476 Posts Drives: E92 335i Join Date: Dec 2007 Location: garaged somewhere in soCal iTrader: (3)	Oil change if you want to give yourself some piece of mind, but if the engine was stumbling or anything I wouldn't worry about it. Water has to take a pretty long path to get into the intake manifold on these cars. Much longer trip than a na motor
	Appreciate 0 Quote

10-09-2011, 12:53 PM	#5
Brey335i Banned 118 Rep 4,771 Posts Drives: e46 ///M3 Join Date: Oct 2009 Location: Austin, TX iTrader: (11)	The water would have had to be halfway up your wheels, into your tail pipes, and been leaking in through the gap between your doors and sideskirts before that filter was completely submerged You'll be fine. I drove last night too and mine is way lower to the ground than yours. You can always switch to the Dinan intake if you want though.
	Appreciate 0 Quote

10-09-2011, 12:53 PM	#6
E90SoFlo Banned 217 Rep 2,669 Posts Drives: E90 335i Join Date: Jun 2011 Location: Naples, FL iTrader: (9)	You're fine, I was forced to drive through a small river last night as well.
	Appreciate 0 Quote

10-09-2011, 12:58 PM	#7
Jeff@TopGearSolutions 3474 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	For future reference just unhook the charge pipe from the TB and stay out of boost. Temporarily only. Remember on this car if you suck up water it has to go through the turbo's first.
	Appreciate 0 Quote

10-09-2011, 01:00 PM	#8
bboy8282 First Lieutenant 28 Rep 394 Posts Drives: BMW 335i Join Date: Feb 2010 Location: Pasadena, California iTrader: (1)	If your car is still working then your fine...ive hydrolocked my old car back in the day and it took like 1.5 sec after going through the puddle before my car shut down on me
	Appreciate 0 Quote

10-09-2011, 02:59 PM	#9
Will335i The Engineer 27 Rep 331 Posts Drives: AW 07' 335i Join Date: Jul 2010 Location: St. Louis MO iTrader: (2) Garage List 2007 335i e92 [1.00]	I got some misfires on mine when driving through a pretty nasty storm but I also had the inner fender out so the wheel was just throughing water into the pipe. If you didn't experience any problems you should be fine.
	Appreciate 0 Quote

10-09-2011, 03:17 PM	#10
ianbiz Back in a BMW 206 Rep 5,208 Posts Drives: 2015 335i Msport Join Date: Jul 2007 Location: Dallas, TX iTrader: (8)	Everyone in FL is dealing with this hurricane flooding lol __________________ Ian
	Appreciate 0 Quote

10-09-2011, 04:46 PM	#12
Bakeme521 Some say... 251 Rep 4,296 Posts Drives: Fresh Join Date: Mar 2010 Location: Baton Rouge n NOLA iTrader: (12) Garage List 2007 BMW 335i [8.24]	If you were to hyrdolock it, trust me you'd know. I it's running you're fine. May want to re oil your filter if it is the oiled kind. __________________ I have exhaust and an intake...
	Appreciate 0 Quote

10-09-2011, 06:33 PM	#13
135i Cobb Stage 2+/ICarbon/HPF/Stett 41 Rep 488 Posts Drives: E92 335i 6MT Join Date: Aug 2007 Location: Deep in the Heart iTrader: (0)	Thanks for all the responses people. The plot thickens. Update is I went and ran some errands this afternoon and I noticed under high boost (6000 rpm) I got some misfires and threw a limp mode It drives fine with normal driving. I'm going to see if there are any fault codes on my AP Ideas?
	Appreciate 0 Quote

10-10-2011, 11:04 AM	#16
135i Cobb Stage 2+/ICarbon/HPF/Stett 41 Rep 488 Posts Drives: E92 335i 6MT Join Date: Aug 2007 Location: Deep in the Heart iTrader: (0)	Bump for any ideas about what the codes are about?
	Appreciate 0 Quote