Hi I am just about to finnish fitting a racelogic traction control I managed to get at a very good price but when wiring the injectors I notice that the manuel state's it's not suitable for pulse width modulated injector signals, which control limit the injector current , as this type is not compatible with the traction control
please tell me I have nothing to worry about with the S60
PWM Injector Signals
-
- Posts: 3588
- Joined: Tue Aug 02, 2011 12:08 pm
- ECU Model: No ECU
- Location: Norn Iron
Re: PWM Injector Signals
Every single electronic fuel injector Ive ever come across is PWM.
I can only assume by the latter part of the statement they mean low impedance injectors ( peak and hold ) where the ecu allows a high current to open the injector initially, then reduces it to hold it open.
DTA cannot directly run these anyway. Of course, that doesnt mean your car doesnt use them.
So what car/engine/injectors are you using ?
Simple test... ohmmeter across the terminals. Anything less than 5 ohms is deemed low impedance, but will usually be around 2 ohms
I can only assume by the latter part of the statement they mean low impedance injectors ( peak and hold ) where the ecu allows a high current to open the injector initially, then reduces it to hold it open.
DTA cannot directly run these anyway. Of course, that doesnt mean your car doesnt use them.
So what car/engine/injectors are you using ?
Simple test... ohmmeter across the terminals. Anything less than 5 ohms is deemed low impedance, but will usually be around 2 ohms
Re: PWM Injector Signals
Yep, Racelogic mean Low impedance and they've been used on DTAs and OE Bosch ECUs without any issues.
-
- Posts: 20
- Joined: Thu Aug 25, 2011 4:43 am
- ECU Model: S60 Pro
- Firmware Version: 48
- Location: North Scotland
Re: PWM Injector Signals
Stevie
I use seimens deka 630 on a turbo rover k series
the manual is a bit confusing ( at least to myself ) Quote
1.4.6 Injector Resistance
Ensure that the injectors are not of a resistance lower than 4 ohms as the traction control cannot cope with the amount of current driving such injectors. In general terms Racelogic Traction Control is only compatible with standard high impedance injectors. If in doubt contact your dealer.
1.4.7 Pulse Width Modulated Injector Signals
Ensure that the engine ECU does not utilise pulse width modulated injector signals which control- limit the injector current, as this type of signal is not compatible with the traction control.
I think it's best that I give them a ring tomorrow to try to understand the above
I think my deka630 are high impedance therefore 1.4.6 should not apply , its the 1.4.7 I do not understand
thanks bob
I use seimens deka 630 on a turbo rover k series
the manual is a bit confusing ( at least to myself ) Quote
1.4.6 Injector Resistance
Ensure that the injectors are not of a resistance lower than 4 ohms as the traction control cannot cope with the amount of current driving such injectors. In general terms Racelogic Traction Control is only compatible with standard high impedance injectors. If in doubt contact your dealer.
1.4.7 Pulse Width Modulated Injector Signals
Ensure that the engine ECU does not utilise pulse width modulated injector signals which control- limit the injector current, as this type of signal is not compatible with the traction control.
I think it's best that I give them a ring tomorrow to try to understand the above
I think my deka630 are high impedance therefore 1.4.6 should not apply , its the 1.4.7 I do not understand
thanks bob
-
- Posts: 3588
- Joined: Tue Aug 02, 2011 12:08 pm
- ECU Model: No ECU
- Location: Norn Iron
Re: PWM Injector Signals
Reads as if both 1.4.6 and 1.4.7 are saying the same thing ? Just in a weird and awkward way
-
- Posts: 602
- Joined: Fri Dec 04, 2009 1:45 am
- ECU Model: S80 Pro
- Distributor: DTA UK
- Firmware Version: 73
- Location: Pennsylvania, USA
- Contact:
Re: PWM Injector Signals
This is correct. You cannot use low impedance injectors w/ PWM flyback or anything. Typically high ohm injectors only... which is what DTA requires so you're fine. Though, I would use the DTA traction control personally.VR6Turbo wrote:Yep, Racelogic mean Low impedance and they've been used on DTAs and OE Bosch ECUs without any issues.
1992 700RWHP Pump Gas BMW
Re: PWM Injector Signals
Having tried the racelogic in a very powerful FWD car, I would use that over DTA's TC any day of the week. It's brilliant, simple and accepts VR wheel speed signals.
-
- Posts: 20
- Joined: Thu Aug 25, 2011 4:43 am
- ECU Model: S60 Pro
- Firmware Version: 48
- Location: North Scotland
Re: PWM Injector Signals
Excellent after service too even with s/h sourced unitsVR6Turbo wrote:Having tried the racelogic in a very powerful FWD car, I would use that over DTA's TC any day of the week. It's brilliant, simple and accepts VR wheel speed signals.