NefMoto

Hi everyone.
Please tell me if somebody used this bosch 0281006059 for 5120 hack?
I found it as 4mbar sensor!
What sensor do you recomand for 5120hack? 4 or 5 bar?
Thanks in advance

If you're planning to boost up to 4bar then a 5 bar sensor is your choice for sure

thanks, i want to work maximum 2-2.1bar.
i asked for sensor type because i saw different opinion and different problem with theier calibration in 5120 hack strategy
i wan to use one who was tested and confirmed.
thanks in advance

i would go 4 bar since you are planning on going past 2 bar you have to account for atmospheric pressure. so if you plan on boosting 2.1 bar + 1 bar atmosphere, a 4 bar would be safe bet since you would max out a 3 bar

No issues using 0 281 006 059, just be aware on 2.7T you will require a spacer for the throttle boot as the outer diameter of the probe oring is about half that of the stock unit. 

Your local hardware store should have something you can make work. Hint, check the plumbing section - I found a (nearly) plug and play brass fitting for under a dollar.

DSLGRAD / DSLOFS are 437.5 / 31.25 for this sensor.

thanks a lot to all.
i decided for 4bar sensor like i wrote upstairs because i found bosch oem at a very good price in my country.
i have my stock 2.5bar bosch sensor for my aum engine with small diameter and this new one is the same , is for small hole diamter,
thanks jdm for your advices regards DSLGRAD / DSLOFS
please tell me, for the rest 5120 hack procedure ( is saw the list from wiki) i must divide with 2 some maps and ither multiply with 2 , correct?
i think the nyet and british made theier examples for 5bar sensor.
the hardest jos will be the asm code who must implement it too?
thanks in advance

When you do the hack , you can use sensor up to 5bar. Procedure for the hack is same whatever sensor you use. Only difference is DSLGRAD / DSLOFS .

Today i made modifications in my file only for  DSLGRAD 437.5 and DSLOFS 31.25!
Car not starts am i have error on vcds , peassure between maf and throtllle  body lose.
What can i do for new sensor!

You can't just do that with adjusting maps. As you were told several times before, it requires ASM changes.

Can you talk us through specifically what you have changed so far, or post a copy of your bin, we may be able to point out what you are missing. As mentioned the two items specific to this particular sensor, DSLGRAD and DSLOFS, are unlikely to be the issue here.

He does not have the tools or the ability to do ASM changes AFAIK

Thanks guys!
I hoped if i modify only DSLGRAD and DSLOFS i can use the sensor directly. I don't want to make complete 5210Hack at this moment , i tried only to change the MAP sensor. So is not enought to change only DSLGRAD and DSLOFS and i must make ASM code modification. I tried ida pro but without success.
Any help with ASM modifications, can i change the code directly in HEX?

You can do ASM changes in hex, if you have right locations. You should be able to use another sensor without hack, if you get dslgrad and dslofs right. I think your grad and lofs are halved for 5120 right now.

I understood like you said can use other sensor with DSLGRAD and DSLOFS right values, but the reality is other. Maybe the values witch JDM give them to me are wrong for my issue.

I have tested it myself. JDM gave values for 5120 eg halved. You need to multiply them.

will try to double them and ofs put with - , jdm gave me the value positive but i think it must be negative, correct?
if i apply FR formula for dslgrad for my sensor result a value = (4000-500)/(4.65-0.25) = 795
and for osf had a strage formula in FR
"dslofs = pvdkds(0.4v)-udsl(200hpa)* dslgrad = 200hpa - 0.4v*dslgrad",  STRAGE , no???
but if apply it i have a ofs value = 301 ( positive)
all data for my sensor are in attached pdf

You're wasting your time with this sensor unless you intend to do the corresponding ASM divisions.

i understood that but for the moment i 'm not capable to made asm modification.
like i told you i tried to open ida with my file (splited in 2 parts 64k rom and 960k the rest of file) but something i made wrong, maybe allocation address. i tried with autoscript but not work too
any help from your part will be very very good.

Hi Nyet.
Please can you confirm if i am to the right way with IDA? I loaded and find my launch/nls function (how i defined in tuner pro at AAFEC address , and my valiables start at 17d00)
Looks ok?
Thanks in advance

I started from the justin 5120hack 032hs file (he used 3 bar sensor).
1 . First i used 2.5bar oem auq map sensor with dslgrad = 270.50 and dslofs -8.4. Car starts ok , run not so good like non hack file (the boost is not so high and make it hard) but car works and stay ok at idle. i recreived a vcds error - pressure drop  between manifold ......
2 . I changed my oem map sensor with 4 bar sensor 0281006059 with your adviced values for DSLGRAD 437.5 and DSLOFS 31.25. Car starts ok but after 3-5 seconds when trims begin to work the idle is very bad between 900 and 550. lambda, timing and pressure looks bad in log.
My opinion is DSLGRAD and DSLOFS  are wrong!
If i apply formulas from FR
DSLGRAD = (4000-500)/(4.65-0.25) = 795 and divided by 2 is 397.7272727
DSLOFS = 500hpa - 0.25 * 795 = 301.13 and divided by 2 is 150.56
These 2 values will try tommorow.

Any advice for my situation please!

DSLGRAD = 397.7272727
DSLOFS = 150.56
With these values idle is more stable
It begin to fluctuate after 1 minute after i wrote the flash file , when STFT begin to work
Can be a problem about this sensor because it doesn't know less than 500mb at 0.25V?

Your DSLGRAD and DSLOFS calculations are bad , because you are using wrong MAP calibration.

There are tons of info in this forum but no one reads them.

You have a MAP sensor with
min Voltage =0.4V
max Voltage = 4.65V

Just use correct hPa values for each voltage and you will end with any headache.

i don't think i calculated wrong.
please see attached files
min voltage is 0.25 and max 4.65 with 50 and 400Kpa.
so...?

No chance to make it works.
Tried many values for dslgrad and dslofs......without success
With yours values(DSLGRAD 437.5 dslofs 31.25)idle is between 600-1000 rpm and g71 and pressure drop between..... appears imediatly in vcds!
Idel is more stble with this values dslgrad 411.76 si dslofs 85.27 but when i push a little and fast the acceleration pedal and leave it fast , when go back to idel there again i have a big fluctuation , and again G71 manifold preassure sensor error in vcds.
I measured the sensor voltage and when the sensor is powered without engine start it had 1.09V (at atmo preassure) and with engine start it had 0.1V ( at -0.7 bar vaccum). Very strange value this 0.1V.
Any suggestions ?

As mentioned, because you are using a 4 bar sensor and stock coding only supports 2.5 bar... Computers is expecting a 10kpa change per voltage point.... even though its a 4 bar the computer is still treating it as a 2.5bar. 

The 4 bar sensor is UNUSEABLE without the corresponding ASM changes done, as well as the relevant and necessary axis and values scaled accordingly.

You can beat your head on the wall all day trying to chase the DSLGRAD and DSLOFS, but it comes down to the ecu expecting the 2.5bar due to the ASM.

stock is 10kpa denominations, hacked with asm is 20....  so with factory asm by map voltage computer may see 30kpa variation... in actuality due to your sensor range its twice that... so your positive pressure will NEVER line up right.

I'm not using stock code. i used the 5120 hackaed file from justin from nefmoto.

Hi. Somebody can tell me about values of 2 variables ( pvdkds and udsl) from FR for calculation of DSLOFS.
In FR have example for minimum map sensor values 200hpa with 0.4V. In formula DSLOFS pvdkds=0.4 and udsl=2004. They are minimum values of map or they are constants.
DSLOFS = 200- (0.4*DSLGRAD)

Question is if i have for map sensor 500hpa at 0.5v DSLOFS  will be :
500-(0.5*DSLGRAD)
or
200-(0.4*DSLGRAD)?

Thanks

Please rewrite in terms of an algebra problem and all will become clear.

In FR exists an example for a stock map sensor where minimum for hpa and voltage are 200hpa and 0.4V. Look in the attachement.
Map characteristics for lowest values 200hpa at 0.4v.
DSLOFS = udsl - ( pvdkds 8 DSLGRAD).
In FR (look again in attachemnt) udsl = 200hpa and pvdkds = 0.4v but is not specified if they corespond with lowest map values or their values are constant.
So if i want to change my map sensor who has lower values 500hpa at 0.5v than in DSLGRAD formula i replace udsl with 500hpa and pvdkds with 0.5v or they will remaining 200hpa and 0.4v.
Do you understand now my dear NYET? I think you understood from first time but you like to angry me! Thanks again for your time!

udsl and pvdkds are the minimum hpa and voltage from the sensor specification

forget about lowest/highest.

you want a y = a + bx where x is input v and y is output pressure.

Find a and b such that y is correct for two x inputs. Pick two. Any two. Find a and b.

Thanks for your effort Nyet.
Result the same thing like what result from FR formula. All depends the input values. I remaining with 500hpa and 0.5V and 4000hpa and 4.5v , will be 875 and 62.5. I devided with 2 both of them and result like JDM said. I have 2 specification for this map sensor and they show 2 different values for 4000hpa. One had 4.5v other had 4.65v for the same 400hpa.

Today i tried 437.5 and 31.25 ( i made this thing 2-3 month ago and doesn't work , maybe something was wrong in the file), for some 30km and 3-4 WOT logs works ok with some idle fluctuation but my file is not adjusted, all cells of fkkvs , kflf and kfkhfm are 1.