DIY 20+hp free mod

DavidGP · 06-01-2017, 06:10 AM

I recently learned of a free mod anyone can do to gain what feels like a massive amount of power. Grab a gallon of distilled water and open your hood. Open up your Intercooler reservoir and top off to the top of the yellow float valve as specified by BMW. Thats it folks!!!

I recently discovered that my IC water was really low and my car was throwing a code. I can imagine the intake air was higher than normal because there was no water running through the IC. Car feels much faster.

I imagine others are driving around with the same problem. Your welcome!!

Mandi90TT · 06-01-2017, 08:46 AM

Quote:

Originally Posted by Railgun

Mod? No. Preventative maintenance? Yeah.

Agreed. Just good user/owner maintenance.

N55 · 06-01-2017, 08:50 AM

lol...

Flacht3 · 06-01-2017, 12:34 PM

I heard filling your gas tank when it's empty is a great mod too.

Mandi90TT · 06-01-2017, 12:35 PM

Quote:

Originally Posted by ItIsChrisM

I heard filling your gas tank when it's empty is a great mod too.

Isn't that like a 425 HP mod?

DavidGP · 06-01-2017, 02:05 PM

I hope you guys read into some of my sarcasm.

M4Now! · 06-01-2017, 08:18 PM

Quote:

Originally Posted by DavidGP

I hope you guys read into some of my sarcasm.

OP, you had a legit recommendation, stand by it. I didn't know that was something to check, and I'm a pretty tech-savvy owner. Am guessing at least half of the owners on the forum also didn't know.

Cheers

domino_z · 06-01-2017, 08:28 PM

Quote:

Originally Posted by Dave 90TT

Isn't that like a 425 HP mod?

in theory, but i've heard it's more like 470hp because bmw underquoted the power of the S55 with a full tank of fuel

gatorfast · 06-02-2017, 07:13 AM

Quote:

Originally Posted by M4Now!

OP, you had a legit recommendation, stand by it. I didn't know that was something to check, and I'm a pretty tech-savvy owner. Am guessing at least half of the owners on the forum also didn't know.

Cheers

Agreed. Any pics of where this reservoir is what to look for?

Schow · 06-02-2017, 08:46 AM

are you sure its water and not anti freeze?

edwinm3 · 06-02-2017, 11:44 AM

Quote:

Originally Posted by Schow

are you sure its water and not anti freeze?

pretty sure is both mixed

DavidGP · 06-02-2017, 02:46 PM

Quote:

Originally Posted by gatorfast

Agreed. Any pics of where this reservoir is what to look for?

Its right behind the Intercooler. See arrow. You have to be 8 ft tall to see into it but its there.

DavidGP · 06-02-2017, 03:15 PM

Just got the car back from the dealers, no IC leak but the level was a little low. The F80 cooling system is a closed loop so there should not be any areas for coolant to escape. Most likely low from the factory or air bubble released causing low levels.

JoM3z · 06-02-2017, 03:31 PM

So what exactly should we be putting in there? Distilled Water? or Mixture of both Distilled and Coolant?

DavidGP · 06-02-2017, 05:20 PM

Quote:

Originally Posted by JoM3z

So what exactly should we be putting in there? Distilled Water? or Mixture of both Distilled and Coolant?

If your just topping off, Distilled water is ok. If its empty, then get coolant from BMW.

edwinm3 · 06-03-2017, 03:09 PM

bmw sells a small bottle that comes premixed, but if at the dealer why not have them top it off

Schow · 06-05-2017, 01:24 PM

Quote:

Originally Posted by JoM3z

So what exactly should we be putting in there? Distilled Water? or Mixture of both Distilled and Coolant?

I would add coolant only.

Schow · 06-05-2017, 01:26 PM

Quote:

Originally Posted by edwinm3

bmw sells a small bottle that comes premixed, but if at the dealer why not have them top it off

nice..to know that they have a small bottle, not like others you have to get a gallon.

bd307 · 06-05-2017, 01:38 PM

Nice title

Mandi90TT · 06-05-2017, 02:05 PM

On a related tangent, I added some Redline Water Wetter in mine.

CPWINCH · 06-12-2017, 02:33 PM

Just stopped at the dealer and they topped it off for free. Definitely feels better now. I didnt think about doing this before. Thanks for the tip OP

DavidGP · 06-20-2017, 02:47 PM

Quote:

Originally Posted by CPWINCH

Just stopped at the dealer and they topped it off for free. Definitely feels better now. I didnt think about doing this before. Thanks for the tip OP

Your welcome, on a sad note though, the reason I was low on Coolant in the IC Reservoir was I have a leak in the IC itself. Car is at the dealers for approx 2 weeks.

06-01-2017, 06:10 AM	#1
DavidGP Lieutenant 350 Rep 472 Posts Drives: 2016 MG F80 6spd Join Date: Aug 2015 Location: USA iTrader: (0)	DIY 20+hp free mod I recently learned of a free mod anyone can do to gain what feels like a massive amount of power. Grab a gallon of distilled water and open your hood. Open up your Intercooler reservoir and top off to the top of the yellow float valve as specified by BMW. Thats it folks!!! I recently discovered that my IC water was really low and my car was throwing a code. I can imagine the intake air was higher than normal because there was no water running through the IC. Car feels much faster. I imagine others are driving around with the same problem. Your welcome!! Last edited by DavidGP; 06-02-2017 at 02:48 PM.. Reason: sp.
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06-01-2017, 08:50 AM	#3
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06-01-2017, 12:34 PM	#4
Flacht3 Not Enough Garage Space 1138 Rep 721 Posts Drives: STO /765LTS/ Macan Join Date: May 2016 Location: Yay Area iTrader: (0)	I heard filling your gas tank when it's empty is a great mod too. __________________
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06-01-2017, 02:05 PM	#6
DavidGP Lieutenant 350 Rep 472 Posts Drives: 2016 MG F80 6spd Join Date: Aug 2015 Location: USA iTrader: (0)	I hope you guys read into some of my sarcasm.
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06-02-2017, 08:46 AM	#10
Schow Private 11 Rep 85 Posts Drives: 16 SS M3 Join Date: Dec 2015 Location: New York iTrader: (0)	are you sure its water and not anti freeze?
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06-02-2017, 03:15 PM	#13
DavidGP Lieutenant 350 Rep 472 Posts Drives: 2016 MG F80 6spd Join Date: Aug 2015 Location: USA iTrader: (0)	Just got the car back from the dealers, no IC leak but the level was a little low. The F80 cooling system is a closed loop so there should not be any areas for coolant to escape. Most likely low from the factory or air bubble released causing low levels.
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06-02-2017, 03:31 PM	#14
JoM3z Lieutenant 58 Rep 496 Posts Drives: 2023 CP XDrive G82 M4 - SSG Join Date: May 2012 Location: Mars iTrader: (1) Garage List 2023 BMW M4 CP xDrive [0.00]	So what exactly should we be putting in there? Distilled Water? or Mixture of both Distilled and Coolant?
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06-03-2017, 03:09 PM	#16
edwinm3 Brigadier General 980 Rep 4,001 Posts Drives: F82 Join Date: Nov 2011 Location: Broward iTrader: (32)	bmw sells a small bottle that comes premixed, but if at the dealer why not have them top it off __________________ Grigio Telesto M4, 6MT. Coyote 5.0 F-150 991 GT3
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06-05-2017, 01:38 PM	#19
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06-05-2017, 02:05 PM	#20
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06-12-2017, 02:33 PM	#21
CPWINCH Brigadier General 734 Rep 4,635 Posts Drives: Toyota Prius Join Date: May 2010 Location: Los Angeles iTrader: (7)	Just stopped at the dealer and they topped it off for free. Definitely feels better now. I didnt think about doing this before. Thanks for the tip OP __________________ Follow my BMW instagram @CARMODIFICATION Let me know you are from bimmerpost and i'll follow back
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