Question about a BMS chip for an N51/52

E82.Love · 03-22-2015, 04:23 PM

I found a chip for my 128 and was wondering if I had to keep the gas at over half a tank for the fuel pump or is that just on turbo cars? A buddy of mine told me that about his 135 and 335. Kinda confused to why it has to be like that also...

RoundelM3 · 03-23-2015, 07:32 AM

No need to keep your gas tank over half full - that's a load of malarkey, even for the turbo cars. It's just not necessary - but neither should you allow the tank to go completely empty, because whatever trash in the very bottom of the tank will get sucked up into the pump and then cause real problems.

FYI, they're not called "chips" any more - they're either software updates or "piggyback" tuning devices. Nobody's been able to put a chip in an ECU since the 90's.

E82.Love · 03-23-2015, 10:32 AM

Quote:

Originally Posted by roundel335

No need to keep your gas tank over half full - that's a load of malarkey, even for the turbo cars. It's just not necessary - but neither should you allow the tank to go completely empty, because whatever trash in the very bottom of the tank will get sucked up into the pump and then cause real problems.

FYI, they're not called "chips" any more - they're either software updates or "piggyback" tuning devices. Nobody's been able to put a chip in an ECU since the 90's.

Oic. Thought we still chip them. Thanks for the reply!

Taskmaster · 03-23-2015, 10:39 AM

Don't buy it.

TheSt|G · 03-23-2015, 11:16 AM

Quote:

Originally Posted by TheAxiom

Don't buy it.

Yup, get AA.

mike@x-ph.com · 03-23-2015, 02:50 PM

Quote:

Originally Posted by roundel335

No need to keep your gas tank over half full - that's a load of malarkey, even for the turbo cars. It's just not necessary - but neither should you allow the tank to go completely empty, because whatever trash in the very bottom of the tank will get sucked up into the pump and then cause real problems.

FYI, they're not called "chips" any more - they're either software updates or "piggyback" tuning devices. Nobody's been able to put a chip in an ECU since the 90's.

+1

Southjersey128 · 03-23-2015, 06:43 PM

Quote:

Originally Posted by roundel335

No need to keep your gas tank over half full - that's a load of malarkey, even for the turbo cars. It's just not necessary - but neither should you allow the tank to go completely empty, because whatever trash in the very bottom of the tank will get sucked up into the pump and then cause real problems.

FYI, they're not called "chips" any more - they're either software updates or "piggyback" tuning devices. Nobody's been able to put a chip in an ECU since the 90's.

While you are correct about running the car on empty too much is not good, the reason for it is not. The pump strainer always sucks the fuel from the bottom of the tank, so anything sitting in the bottom can get sucked in regardless of your fuel level. However, since the fuel in the tank cools the pump, as it is submerged in the fuel, running on empty will allow it to run hotter and can cause premature failure.
Regardless of that, get the AA tune, like the others said.

E82.Love · 03-23-2015, 06:47 PM

Quote:

Originally Posted by Southjersey128

Quote:

Originally Posted by roundel335

No need to keep your gas tank over half full - that's a load of malarkey, even for the turbo cars. It's just not necessary - but neither should you allow the tank to go completely empty, because whatever trash in the very bottom of the tank will get sucked up into the pump and then cause real problems.

FYI, they're not called "chips" any more - they're either software updates or "piggyback" tuning devices. Nobody's been able to put a chip in an ECU since the 90's.

While you are correct about running the car on empty too much is not good, the reason for it is not. The pump strainer always sucks the fuel from the bottom of the tank, so anything sitting in the bottom can get sucked in regardless of your fuel level. However, since the fuel in the tank cools the pump, as it is submerged in the fuel, running on empty will allow it to run hotter and can cause premature failure.
Regardless of that, get the AA tune, like the others said.

I don't run my car totally empty. Always fill up once the light turns on the first time. But that's like at a quarter of a tank. That's why when they said keep it at half it kind of scared me lol

631twentyeighteye · 03-23-2015, 06:49 PM

The BMS powerbox doesn't really give an increase in power. I installed it on my friends auto 128 and she said it made the tranny feel a little less mushy in D. Not worth it overall.

Southjersey128 · 03-23-2015, 06:56 PM

Quote:

Originally Posted by 631twentyeighteye

The BMS powerbox doesn't really give an increase in power. I installed it on my friends auto 128 and she said it made the tranny feel a little less mushy in D. Not worth it overall.

Exactly, I bought mine before AA had their tune. It does make the shift points feel more "natural" instead of always trying to be in the highest gear for fuel efficiency. On a manual car it just makes the pedal sensitive.

mrvco · 03-23-2015, 08:04 PM

Quote:

Originally Posted by TheSt|G

Yup, get AA.

AA over Evolve

TheSt|G · 03-24-2015, 08:12 AM

Quote:

Originally Posted by mrvco

AA over Evolve

The founder and tuner retired recently, so at this point they are selling canned tunes. Great if you just want a DISA tune and call it a day, but less great if you need custom things done.

AA is actively developing and custom tuning currently(as far as I know).

mrvco · 03-25-2015, 02:57 PM

Quote:

Originally Posted by TheSt|G

The founder and tuner retired recently, so at this point they are selling canned tunes. Great if you just want a DISA tune and call it a day, but less great if you need custom things done.

AA is actively developing and custom tuning currently(as far as I know).

Thanks, that's good to know.

03-22-2015, 04:23 PM	#1
E82.Love Lieutenant 51 Rep 497 Posts Drives: E82 128i AW Join Date: Jul 2014 Location: SoCal, Los Angeles iTrader: (0)	Question about a BMS chip for an N51/52 I found a chip for my 128 and was wondering if I had to keep the gas at over half a tank for the fuel pump or is that just on turbo cars? A buddy of mine told me that about his 135 and 335. Kinda confused to why it has to be like that also... __________________ E82.Love \| Magnaflow \| aFe \| H
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03-23-2015, 07:32 AM	#2
RoundelM3 Major General 1837 Rep 6,990 Posts Drives: 15 F80 M3, 22 G01 X3 30i Join Date: Apr 2010 Location: Clayton, NC iTrader: (2) Garage List 2022 BMW X3 [9.83] 2015 BMW M3 [6.50]	No need to keep your gas tank over half full - that's a load of malarkey, even for the turbo cars. It's just not necessary - but neither should you allow the tank to go completely empty, because whatever trash in the very bottom of the tank will get sucked up into the pump and then cause real problems. FYI, they're not called "chips" any more - they're either software updates or "piggyback" tuning devices. Nobody's been able to put a chip in an ECU since the 90's. __________________ 2015 F80 ///M3 Sedan 7DCT Tanzanite, 2022 X3 sDrive30i 8AT Brooklyn Grey
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03-23-2015, 10:39 AM	#4
Taskmaster Banned 2465 Rep 9,004 Posts Drives: M235i 6MT / E92 328 Msport 6MT Join Date: Nov 2013 Location: Florida iTrader: (6)	Don't buy it.
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03-23-2015, 06:49 PM	#9
631twentyeighteye Colonel 198 Rep 2,239 Posts Drives: 08 335i Join Date: Aug 2012 Location: Long island iTrader: (7)	The BMS powerbox doesn't really give an increase in power. I installed it on my friends auto 128 and she said it made the tranny feel a little less mushy in D. Not worth it overall. __________________ 08 e93 335i MT
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