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Author Topic: I've been given this for free.  (Read 9586 times)

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Field Marshal Dr. Opti

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I've been given this for free.
« on: 13 July 2023, 16:50:10 »
A few years old and taken off a BMW M340i ( before being sold) with the same B58 lump as my car. About £230 new and anywhere from £50-£150 used on ebay.

Very simple to intall ( about 2 minutes) and works on the MAP sensor only. Very safe, I'm told.

Anyone have experience of this type of thing?

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TheBoy

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Re: I've been given this for free.
« Reply #1 on: 13 July 2023, 16:59:17 »
If it only plugs into MAP, I assume it fools the ECU into thinking the boost is lower than it is, and allowing more boost from the turbos....

Bit of a bodge IMHO, potentially harmful to car....
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STEMO

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Re: I've been given this for free.
« Reply #2 on: 13 July 2023, 17:21:53 »
And totally unnecessary
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Sir Tigger KC

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Re: I've been given this for free.
« Reply #3 on: 13 July 2023, 17:22:37 »
I had something like that on my old 530d which pulled and sounded like a Deltic locomotive!  :y

I never tinkered with it so I don't know if it made any difference.  :-\
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Field Marshal Dr. Opti

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Re: I've been given this for free.
« Reply #4 on: 13 July 2023, 17:36:09 »
Quote from: TheBoy on 13 July 2023, 16:59:17
If it only plugs into MAP, I assume it fools the ECU into thinking the boost is lower than it is, and allowing more boost from the turbos....

Bit of a bodge IMHO, potentially harmful to car....

Exactly. It has a switch inside that can add  up to an extra 4.5PSI of boost.

It's a pretty mild device so very unlikely to harm the engine. Most cars come with restricted boost from the factory these days. I believe the 3 pot 1000 cc Fiesta engine is available with 3 different power outputs, obtained  by playing with the boost pressure.   
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Field Marshal Dr. Opti

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Re: I've been given this for free.
« Reply #5 on: 13 July 2023, 17:41:06 »
Quote from: Sir Tigger KC on 13 July 2023, 17:22:37
I had something like that on my old 530d which pulled and sounded like a Deltic locomotive!  :y

I never tinkered with it so I don't know if it made any difference.  :-\

Yes...I remember you saying that

 Turbo derv motors respond well to a bit of boost tweaking. >:D
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Raeturbo

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Re: I've been given this for free.
« Reply #6 on: 13 July 2023, 18:10:09 »
Boost boost and boost some more and be merry😁🔥
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Field Marshal Dr. Opti

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Re: I've been given this for free.
« Reply #7 on: 13 July 2023, 18:19:38 »
Quote from: Raeturbo on 13 July 2023, 18:10:09
Boost boost and boost some more and be merry😁🔥

I imagine your Evo is bursting with boost..... :D ;)
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Raeturbo

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Re: I've been given this for free.
« Reply #8 on: 13 July 2023, 18:33:42 »
It has burst a couple of times in the past ;D ;D but I’m running a nice safe 1.8 bar at the moment 🤣
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Field Marshal Dr. Opti

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Re: I've been given this for free.
« Reply #9 on: 13 July 2023, 18:38:37 »
Quote from: Raeturbo on 13 July 2023, 18:33:42
It has burst a couple of times in the past ;D ;D but I’m running a nice safe 1.8 bar at the moment 🤣

How much is this in old money? 8) >:D
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YZ250

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Re: I've been given this for free.
« Reply #10 on: 13 July 2023, 19:35:05 »
Just be aware that BMW’s store boost data, amongst many other things. Bear in mind that all of the stored data is available to show if the vehicle has been working outside of its parameters, even during a normal service.
Being so new, I’d hate for you to void your warranty.  :y
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dave the builder

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Re: I've been given this for free.
« Reply #11 on: 13 July 2023, 19:36:24 »
Quote from: Field Marshal Dr. Opti on 13 July 2023, 18:38:37
Quote from: Raeturbo on 13 July 2023, 18:33:42
It has burst a couple of times in the past ;D ;D but I’m running a nice safe 1.8 bar at the moment 🤣

How much is this in old money? 8) >:D
26 PSI

My Omegas GM branded tyre inflator is in BAR not PSI   ::)
so I drag out the 2HP compressor because u can never remember how many BARs i need per tyre  ;D
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VXL V6

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Re: I've been given this for free.
« Reply #12 on: 13 July 2023, 19:43:11 »
Quote from: YZ250 on 13 July 2023, 19:35:05
Just be aware that BMW’s store boost data, amongst many other things. Bear in mind that all of the stored data is available to show if the vehicle has been working outside of its parameters, even during a normal service.
Being so new, I’d hate for you to void your warranty.  :y

^ This.  Any modification including rolling road sessions are recorded.
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TheBoy

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Re: I've been given this for free.
« Reply #13 on: 13 July 2023, 19:57:27 »
Quote from: YZ250 on 13 July 2023, 19:35:05
Just be aware that BMW’s store boost data, amongst many other things. Bear in mind that all of the stored data is available to show if the vehicle has been working outside of its parameters, even during a normal service.
Being so new, I’d hate for you to void your warranty.  :y
the map would be storing the false value though.  that said, as it will impact other stuff, it would be noticeable if anyone looked hard enough...
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Field Marshal Dr. Opti

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Re: I've been given this for free.
« Reply #14 on: 13 July 2023, 20:01:02 »
Quote from: YZ250 on 13 July 2023, 19:35:05
Just be aware that BMW’s store boost data, amongst many other things. Bear in mind that all of the stored data is available to show if the vehicle has been working outside of its parameters, even during a normal service.
Being so new, I’d hate for you to void your warranty.  :y

Agreed.

I imagine that even if the device is removed prior to a service there is 'stored data' available to BMW if the 'data police' from 1984 want to dig deep enough. Although, I doubt there would be a problem with the warranty if the warranty claim was related to the central locking or electric seats not working properly.......or anything unrelated to boost pressure.

It's a pretty quick car as it is ( sub 4 seconds to 60 MPH) according to Dragy so I'll probably keep my powder dry for now. :y

 
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