Limp mode with no OMP
#1
Limp mode with no OMP
CAn anyone confirm, as in actually tested if ECU goes into limp mode with NO OMP attached? More specifically, will the TB butterfly stop opening with key in ON position?
I'm using the 20b omp attached to aftermarket ECU, so I don't have the rx8 omp attached, but I'm positive I had butterfly movement up till about a week ago.
It's a 20b conversion, obviously btw.
I'm using the 20b omp attached to aftermarket ECU, so I don't have the rx8 omp attached, but I'm positive I had butterfly movement up till about a week ago.
It's a 20b conversion, obviously btw.
#3
TB is def getting power, can hear it but no movement. Grrrr. I don't have rear O2 sensor hooked up but pretty sure that won't do it.
Using a dedicated LPG ECU called profire, I don't recommend it as the business owner is a total dick. Never gave the relevant diagrams, just generic shiz for other applications. Wishing I had used adapt or haltech now. She's booked in with my local LPG guy on Monday for the certification and hopefully for starting and tuning, but not unless I get the TB working. Grrr
Yeh thinking bout wacking on the 20b TB, STILL GONNA BE A MISSION TO complete BEFORE Monday THO, ITs Sunday here now.
#6
Modulated Moderator
iTrader: (3)
It worked fine....but it has some issues. Especially when you remove the MAF and try and push 4x the air through it. It would seem to partly close sometimes and even adjusting the scale for the pedal it always felt laggy. Not sure how to explain it.
Do you have the ECT sensor hooked up? I think you need that one too 😊
#7
It worked fine....but it has some issues. Especially when you remove the MAF and try and push 4x the air through it. It would seem to partly close sometimes and even adjusting the scale for the pedal it always felt laggy. Not sure how to explain it. Do you have the ECT sensor hooked up? I think you need that one too dde0a
Actually, just for now I think I'll convert the dbw TB to cable, just so I don't have to make an adaptor pipe to suit my layout, ain't got time for that. Just need to get it working before tomoz.
Last edited by SiNfidelity; 04-09-2016 at 09:45 PM.
#8
Modulated Moderator
iTrader: (3)
Yeh temp sensor is plugged in and working. Got me stumped, u got me worried now bout the dbw. Better change it I think. What's the easiest pedal - cable combo u have seen/discovered/used?
Actually, just for now I think I'll convert the dbw TB to cable, just so I don't have to make an adaptor pipe to suit my layout, ain't got time for that. Just need to get it working before tomoz.
Actually, just for now I think I'll convert the dbw TB to cable, just so I don't have to make an adaptor pipe to suit my layout, ain't got time for that. Just need to get it working before tomoz.
I have seen the stock pedal modified to use a cable too. Not sure the specifics on that though.
#9
I wonder if it's possible to use the pedal to control the dbw without the ECU, like bypass ECU somehow. A bit like a servo in remote control cars
#11
I just tested my running car, each wires power while running and making pedal changes, omg! I'm even more clueless than before.
I need a pedal with a resister type contact set up to adjust the voltage. Not sure if the TB motor can be variable voltage tho. Ie 1v opens a touch, 2v more 3v etc.
I tested it with 5v and it still opens fully, tho it takes longer to do than at 12v. Damn, where am I gonna find 1v
So need to bypass this ecu
#12
Modulated Moderator
iTrader: (3)
Horry shrit!!!
I just tested my running car, each wires power while running and making pedal changes, omg! I'm even more clueless than before.
I need a pedal with a resister type contact set up to adjust the voltage. Not sure if the TB motor can be variable voltage tho. Ie 1v opens a touch, 2v more 3v etc.
I tested it with 5v and it still opens fully, tho it takes longer to do than at 12v. Damn, where am I gonna find 1v
So need to bypass this ecu
I just tested my running car, each wires power while running and making pedal changes, omg! I'm even more clueless than before.
I need a pedal with a resister type contact set up to adjust the voltage. Not sure if the TB motor can be variable voltage tho. Ie 1v opens a touch, 2v more 3v etc.
I tested it with 5v and it still opens fully, tho it takes longer to do than at 12v. Damn, where am I gonna find 1v
So need to bypass this ecu
It's more complicated than that. ...there are 2 circuits that have different voltage profiles. I think they are inverted if I remember correctly. ( might just be different scales...?? ) The ECU interprets them and looks at the position tables and then opens the throttle plate.
Ask Brettus....he will know a lot more than I remember. It has been 3 or 4 years since I ditched the DBW
#13
It's more complicated than that. ...there are 2 circuits that have different voltage profiles. I think they are inverted if I remember correctly. ( might just be different scales...?? ) The ECU interprets them and looks at the position tables and then opens the throttle plate. Ask Brettus....he will know a lot more than I remember. It has been 3 or 4 years since I ditched the DBW
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