Ecu chip replacement now TCS & CEL

whrdnsx · 2 January 2008

I replaced my Dinan ECU Chip with an OEM chip now I get a CEL & the TCS light stays on. The fuel pump doesn't prime for a couple of seconds either.

I Put the Dinan chip back in & all is normal??

Anyone shed any light on this? The car still starts & runs/idles fine. I haven't driven it as yet. or pulled a code. I assume it has something to do with the TCS?

anyone shed any light on this?

Thanks

Larry Bastanza · 2 January 2008

Codes??

C-speed · 3 January 2008

You sure you put the chip in correctly? Its easy to insert the chip 1 tooth off or even backwards.

Give that whirl. If it doesn't work, PM me, I can send you a new chip with the OEM ROM on it.

SweetChuck · 3 January 2008

I wrote the this chip with this bin file , it runs fine in my engine , can you see any abnormalities in the file , pls rename to *******.bin

site keeps going down GRRRRRR cant attach

http://www.nsxprime.com/forums/showthread.php?t=97571

see bottom of this thread

Either the eprom is corrupted (I verified it twice)
The file is corrupted (works ok in my car)
94 model is different to 91 (unlikely but possible)

ChopsJazz · 3 January 2008

I hope the above advice works for you. You'll want to replace that Dinan chip as the OEM makes more power. I know, I've dyno'd them back to back.

whrdnsx · 4 January 2008

Very strange. It won't even give a CEL Code!

I was very confident I had the chip in the correct way. anyway I turned it upside down & exactly the same, no fuelpump prime. CEL & TCS light stays on. Engine still seems to run normally (Maybe limp mode)

Again I put a different Dinan Chip in (I have 3 different chips) & all is back to normal. Fuel pump primes, No CEL or TCS lights.

Dinan chip has numbers;
MX R9349
27C256DC-90
M15964-1
Korea
VPP=12.5V

OEM Chip has Numbers;
Japan 9120
00007SS5
PGM 12.5V
HN27C256HGJ-85

SweetChuck · 4 January 2008

If you have turned it upsidedown , chances are it is now blown , I will write a new chip for you , I will have to order some in .

whrdnsx · 7 January 2008

Thanks Ricky

I owe you those beers back now.

I can send you one of my Dinan chips if you want to check it out for any differences?

Ecu chip replacement now TCS & CEL

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