[Guido]

I'm very interested.

 

[Guido]

So, its like you're essentially "bench flashing " the ECM. I do electronics work with a microscope, so it sounds pretty easy to me. I look forward to more info on how to modify the ecm , how to read the factory map, and what parts to manipulate.

 

[Guido]

Taking notes. I can't wait for more.

 

[Guido]

The mods to the ECM are easy enough. The WinOLS 1.5 isn't available anymore. Only the latest version 4.74 is available. If you could post a link it would be very helpful.

 

[Guido]

I couldn't download the .rar file.

 

[Guido]

So.... for clarification on the timing map. In this map, the ECM will further advance the timing when you are putting your foot down, according to read lambda value, in addition to the base ignition timing map through the RPM range. You are simply removing the additional timing to prevent detonation (spark knock) which the knock sensor will pick up and tell the ECM to retard the timing back, losing power. Correct?

 

[Guido]

This is fantastic information!! I have been wanting to play with mapping "forever". I just didn't have any clue where to start. Thanks for taking the time to share.

 

[Guido]

Fantastic!! Very impressive! Its nice knowing there are guys out there who understand wiring diagrams as well as I do. 2 questions; 1. Why not just disconnect the main power terminal from the battery in the fuse panel under the hood so you don't have to remove the battery cable, i.e. have to pull up the spare tire and remove the 326 bolts on the battery cover? Its the big fat black wire that feeds it on the far left. It would make the flashing process easier plus you won't have a long wire running through the car. 2. What about connecting into the 12V connection in the OBD2 port with diode, like pin 21 on the ECM? That way you could do everything under the hood and don't have to crack open the cable.

 

[Guido]

I'm going to do that to mine when I get it wired up and I'll let you know how it goes. Still going to be a bit before I can get that done though. I've still got body work to do. Plus I wanna drive it some before I start messing with the mapping.

 

[Guido]

Did a 0-60 run yesterday. It's right about 5.2 sec. I'm sure I can get it in the 4s with launch control and some tuning. My friend that I got hooked on VWs after I sold him my Stage 1+ APR 2009 GTI, found me an ECM for $100. I hadn't even tried to look for one yet. I was concentrating on finishing the car 1st. That's a good friend. I got him so hooked that he sold the 09 GTI and upgraded to a 2012 Golf R. Its STAGE 3 APR tuned with all "Forged" performance parts and brakes. Stupid fast!!! We have to put in an upgraded clutch. It came with a stage 2 clutch of unknown origin, but he smoked that one. Too much torque. He bought a Southbend Stage 3. Now I just need to have a weekend that my lift is free. He also found some other WinOLS software and a bunch of maps plus some training videos on how to use the software on a deep dark hole somewhere on the web.

 

[Guido]

Did my ECM mod. I opted to drill through the plastic vent insert instead for the wires. I also attached the resistor to the "ground" pad. Its in series with the switch, the circuit doesn't care. It was easier and cleaner that way.

 

[Guido]

You'll just have a CEL until you get it programmed out. Unless your having an issue I'd just leave it alone.

 

[Guido]

Thanks mate. I haven't bought any of the cabling yet. I was focusing on getting the car done. I will be buying them shortly. I opted for the surface mount resistor because it made the mod very low profile and we had them at work. All I had to do was get one off the shelf.