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Piar

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Posts posted by Piar

  4. S50B30 single vanos trouble

    in G4+

    Posted

    yes

    Erors stay at zero

    But anyway with enabled cam angle test if something goes wrong i will receive different cam angles when i play with throttle

    So today we age going to rebuild vanos system and will take a look

    this particular car havearoun 150 000 km mileage and problems with vanos have been guaranteed)

  6. S50B30 single vanos trouble

    in G4+

    Posted

    of course i have done it

    you can see that error is shows up during opening or closing of cam

    when camshaft sitting stable in closed\open case - there is no errors at all

    i think that problem in vanos system it have low\no pressure in retard camera

    so thats why we see errors

  10. Master Fuel, Minimum Effective Pulse Width

    in G4+

    Posted

    You have set to long minimum pulse width

    It mean that injector will be opened at least for 1.5 msec per cycle

    NOT shorter!

    If you check current injector pulsewith you can see it always 1.5 ms on idle

    and untill you make master fuel big enough that ECU will calculate injector pulse width more than 1.5 msec AFR will not change

     

    Master fuel is very important parametr

    if you change it - it will affect AFR in entire range of RPM and load

     

     

     

  11. S50B30 single vanos trouble

    in G4+

    Posted

    problem sovedI have assigned VVT inlet Lh function to Trigger 2 and di2(which actually shows camshaft position)

    When i turned off trgger2 vvt function - everything stabilized and started to work

    except vanos) i think it in bad condition

    because it can not hold target

    instead of 10 degree it instantly open to it's maximum and closing very long

  18. feature request

    in Vi-PEC i Series

    Posted

    I want to control DCCD by Vipec

    I want that one Axe to be analog input from G sensor( it's can be done) and second axe to be calculated difference between front and rear axel speed!( I think it's impossible to do currently)

    I think it will be very useful if we( users) can set calculated parametr as axel in GP pwm table or any other table.

    Also let's discuss how we can realize rolling launch?

    Basicly it's speed limiter and as soon as we activate it Ecu have to catch current speed and activate IGN cut to build boost.

    Or second variant - rmp limiter with the same logic.

    I have tryied to realize this on current firmware but always have the same problem - car always want to increase speed sue to fact I have set target lauch rpm to 5500 and ignition start cut rmp to 4000. I know that if I increase % of ign cut I can hold desired rpm but I don't think it's right.

    Also I want to have separate normal lauch and rolling launch which can be activated through different DI's.

  19. Baro correction

    in Vi-PEC i Series

    Posted

    completely not!

    I mean I have logged X and Y parametrs then I want to calculate Z value which equal Z=X*X-Y/5( for example)

    It will be very useful when you want to calculate smthng special or when you forgot to log parametr which can be calculated

  21. Baro correction

    in Vi-PEC i Series

    Posted

    Hi everyone!

    I'm have problems with etrottle map. I want to set one axe to be BARo correction but software don't let me to set numbers which are not in 90-110 range.

    It's problem for me because i have very low Idle in mountains where BAP are 0.75.

    Also I want ask you to add baro correction to Idle base duty and wasgate duty. It will be very usefull for me because in our area BAP vary from 0.75 to 0.95

  22. Fuel calculation

    in ViPEC V Series

    Posted

    Hi everyone!

    Do Anyone ever mind how Vipec calculate how much fuel to inject?

    As I can see and estimate calculation pretty simple and shitty. Because vipec isn't calculate how much air have been consumpted! And then take a look at AFR Target table/fuel table/latency/other corrections to calculate injector pulsewidth. We just operating some kind of "numbers" in fuel table to take desired (afr table)result.

    Also as we can see in help file vipec do not reccomend to change afr for more than 0.5 afr due to fact we don't get desired afr.

    So all we do in fuel table - just try to get our AFRs by the changing pulsewidth which we see not in ms. That's why we often have very shitty 3D graphs.

    Also vipec don't take in account IAT to determine air density. Just simple IAT correction table which can just add/subtract percent from injector pulsewidth! NOT calculated air mass!

    Can Anyone explain to me how it's possible to have stable AFR each day in any place with such kind of calculator?

    Guys Can I ask you to create normal speed density strategy to calculate mass of air and just then injector pulsewidth?

  25. S54 base map request and EG33 trigger question

    in ViPEC V Series

    Posted

    Hi Everyone!

    Currently I have a project Bmw e30 with s54 engine. As I know Vipec can handle s54 trigger pattern and also dual vanos control.

    Maybe it's possible to share base map for it?

    Also we want to crank subru EG33 engine. We have 2 sprockets on the crankshaft:first- multitooth 12, second 12-1.

    What kind of wheel give me better accuracy?

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