Juan

iTrader: (28)

I bought a Pettit ECU and noticed that the Pettit seals were torn, indicating that the ECU had been opened up before. I took a look inside and none of the chips say Pettit on it but two chips have a reflective metalic tape with writing on it. One chip says EXE on the metalic tape and the other says WKS. I've attached a picture of it. Does this look right? I dont remember ever seeing a picture of the chips inside a Pettit ECU before.

zanthrax

Don't peel off the tape. UV light will destroy the program in the ICs.

Juan

iTrader: (28)

Thanks for the tip. I'm not planning on peeling the tape off or messing with the chips at all.

Tom93R1

iTrader: (2)

That looks right, just standard EPROM chips with sockets soldered in. The stock ECU configuration doesn't have those sockets or the riser board, the stock chips are de-soldered and that's all put in.

Juan

iTrader: (28)

Thanks

Force13B

iTrader: (19)

Wan send a PM to hwnd, he's poked around in more ecu's than almost anyone on this forum.

Juan

iTrader: (28)

Thanks! I couldnt remember his name or I would have asked him instead of making this thread

CrackHeadMel

iTrader: (2)

Hwnd should have some info on that ecu for sure, i was talking to him about Pettit's chips less than a week ago

hwnd

iTrader: (4)

PM replied

That is in fact your standard board for "chipped" ECU's (specific to the FD3S 8bit).
Oddly enough it's the "map" / ROM-data is based on the N3A7 JSpec ECU.

Seems a lot of those "chipped" ecu's, they copy (read 1:1 copy) the ROM data but I've hardly seen anyone with their own custom ROM (I've yet to see anyone modify anything but rpm limiter, speed limiter, fuel & ign). I've got a lot of research into this and disassembled a lot of the code.

I'm working towards a "single turbo" stock ECU (when I have free time).