This has been going on since day one.
Most of the time when hot there is som fuel that ignites, could be in the exhaust ot inntake, and yes it has scared a few people too. Not good.
Is it suppose to be like this? otherwice its running fine
All sparks firing when turning on ecu
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- Posts: 1247
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- ECU Model: S100 Pro
- Distributor: None-Coil On Plug :)
Re: All sparks firing when turning on ecu
Bit more info please, I'm guising that you are using amplified coils. There are tricks you can use like supplying the +12v to the coils via a relay. or triggering from rising/falling edge. Alex should be able to help.
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- Posts: 1622
- Joined: Fri Feb 28, 2014 1:03 pm
- ECU Model: S40 Pro
- Distributor: DTA
- Firmware Version: 79
Re: All sparks firing when turning on ecu
Yes, it's normal on amplified coils. If it's an issue, wire the 12v coil power via the fuel pump relay.
Re: All sparks firing when turning on ecu
Ok thanks. Yes they are amplified, Yes i will try that tanks
Re: All sparks firing when turning on ecu
Also, why do any aux outputs pulse when power is turned on?
I wouldn't mind but when I run nitrous I have to disarm and arm the system every time I turn the key otherwise it (aux 3) gives the engine a small shot of gas followed by a nice backfire.
I wouldn't mind but when I run nitrous I have to disarm and arm the system every time I turn the key otherwise it (aux 3) gives the engine a small shot of gas followed by a nice backfire.
Re: All sparks firing when turning on ecu
I also have this problem, with amplified coils.
Thinking of testing Alex suggestion, but i don't understand the difference.
The fuelpump relay is turned on (3 sek) at the same time you power up the ECU, and give the coils power supply.
Can you explain how this fuel pump relay wiring can disable the spark firing when i power up the ECU?
Thanks..
Thinking of testing Alex suggestion, but i don't understand the difference.
The fuelpump relay is turned on (3 sek) at the same time you power up the ECU, and give the coils power supply.
Can you explain how this fuel pump relay wiring can disable the spark firing when i power up the ECU?
Thanks..
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- Posts: 1622
- Joined: Fri Feb 28, 2014 1:03 pm
- ECU Model: S40 Pro
- Distributor: DTA
- Firmware Version: 79
Re: All sparks firing when turning on ecu
I missed this. I'm not sure what's happening there, I'll need to investigate.gnutz2 wrote:Also, why do any aux outputs pulse when power is turned on?
I wouldn't mind but when I run nitrous I have to disarm and arm the system every time I turn the key otherwise it (aux 3) gives the engine a small shot of gas followed by a nice backfire.
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- Posts: 1622
- Joined: Fri Feb 28, 2014 1:03 pm
- ECU Model: S40 Pro
- Distributor: DTA
- Firmware Version: 79
Re: All sparks firing when turning on ecu
The event that causes the coils to fire happens as the ECU powers up.Bigboss wrote:I also have this problem, with amplified coils.
Thinking of testing Alex suggestion, but i don't understand the difference.
The fuelpump relay is turned on (3 sek) at the same time you power up the ECU, and give the coils power supply.
Can you explain how this fuel pump relay wiring can disable the spark firing when i power up the ECU?
Thanks..
By the time the fuel pump relay turns on to prime the pump, the ECU has control of all the outputs, so the coils aren't turned on/off, meaning this event can't happen if the coils are powered using the fuel pump relay.