aw11

Just wondering why the 02-03 ecu is said to be better.

ahrmike

different fuel map.

o2-03 gets better gas mileage, more powa.

pdenton

yay for not searching *wink* how hard is it to do said ecu swap?

SgtB

You need the new ecu's vin and your vin. Go to the dealer, plug in the new ecu and then ask them to reprogram the new ecu to your keys. Done.

HankookS2K

00/01 ran richer

02/03 is more lean

vtec9

^ what he said.. they leaned out the fuel mixture a bit which gives a handful of extra ponies.

blkwidow

Would you switch over if you were going FI? Or would the extra fuel help keep knock in check, and or possibly better to fine tune.

Slows2k

The difference is so small I wouldn't bother swapping a functional PCM for another.

pdenton

So there's no "matching" required? I ask because my last car was a saab 9-5 which had different models with different options so you had to find an ECU with the same transmission, etc as you had. I assume since the s2k has no real options like that, any ECU will work? Also, is there any reason one wouldn't want to do this to their 00-01?

HankookS2K

no, if your going FI you should be using a stand alone anyways