I have a 2000 honda prelude that just had the motor rebuilt and a turbo kit put on. It was obd2-obd1 converted with a p06 ecu. Now the car had 1000cc injectors on it and no resistors. At the dyno they tried to tune it and it definitely burnt some stuff out. It fryed their tuning ecu twice. they swapped injectors to a different pair and it still does the same thing. The car will run for like 3 seconds and than just shut off. While frying an ecu! any suggestions on what could be causing this or just somewhere i can start?

 

Do you know what kind of injectors you're using? They're likely P&H (low impedance), which will burn out the injector drivers in your ECU, as Honda ECUs are only made for saturated (high impedance) injectors or P&H injectors with ballast resistors.

If you're determined to use your injectors, which I would bet are P&H, you need to install ballast resistors or a true P&H injector driver.

Your shop should have known this. I'm VERY surprised that this would happen without them knowing exactly what the problem is.

 

they are precision 1000cc low impedance injectors that were ran without the resistors and it fryed the ecu. Than we put resistors on it and tried a different pair of injectors and it fried the ecu again.

 

So you didn't replace the ECU? The injector driver's are likely fried, ruining the ECU.

What shop did the work? I woudln't recommend using them again.

 

yeah when they wired the resistors in and tried a new pair of injectors they used a new ecu also and it fryed it ?

 

It sounds like your shop doesn't know what they're doing.

Pair of injectors? The H22 uses 4 injectors.

What is the P06 ECU out of? I'm not familiar with that one. What kind of programmable setup are you using? I personally use a NepTune RTP in a P28 (OBD1 Civic EX VTEC) ECU. I have no problems, but I'm using saturated injectors.

 

set of four injectors my bad...yeah i will never go there again!!


its outta a non vtec civic thats chipped with vtec... The car was suppose to be reflashed on crome but it never lasted on the dyno.

 

where would u start to search to find the problem before i hook another ecu up and it frys it ?

 

You need to measure the impedance of the injectors with the ballast resistors installed. Make sure the impedance is around 10 to 12 ohms with the ballast resistors installed. Without them installed, the impedance will be around 2 ohms, which WILL destroy the injector drivers in the ECU.

 

Converted PO6 to Vtec is just like P28. I'm using this exact ecu with Crome Pro.
I also saw ecu fried because of IAT wires touching each other.

 

its not the iat wires its something to do with the car not having resistors on it and being ran and now it frys an ecu everytime its hooked up even with resistors on it...