Hi Folks,

Hope someone can clarify this for me. I have a 2000 SE with 75K on it.
I've been reading a bit over on maxima.org and it's been mentioned that
there is a software upgrade available for the ECU. I also seem to recall it
was mentioned that this upgrade is covered under the 8/80 warranty becuase
it relates to emissions. Is this correct? If so, would the dealer have
done this as part of a major service or does the owner have to ask for it
specifically? Thinking the latter is more likely, what do I ask for? Is
there a related TSB?

When/if I get this done I'm also considering advancing the timing to 17
degrees as I always burn 93 octane fuel and I understand the 2 degree
advancement improves efficiency. Can anyone provide any feedback regarding
this adjustment?

Thanks in advance,

Brad

Naxray wrote:
void your warranty.

There may be a TSB, technical service bulletin in which the ECU was
replaced for some reason. Check with Nissan for that.

CD

Thanks CD - I was referring to upgraded software for the Nissan OEM ECU...I
have read that some have had their ECU's flashed with "the upgraded
software" at the dealer.

Or I could just be really confused... ;^)


"Codifus" <codifus (AT) optonline (DOT) net> wrote

Naxray - you are not going crazy....

There is an ECU update (infact there maybe several) available for some
5th Gens. I was just discussing this recently with NissTech, you might
be able to find our discussion if you search the groups.

The gist of it was that the update most likely relaxes the criteria
that are used to set the CEL based on out-of-spec readings from O2
sensors (for example). If its a TSB, it's not a warranty covered item,
but you can call your local dealer and ask if your vechile is included
in the TSB (or dig out the TSB and check yourself).

Cheers,
Nirav
96 Max GLE, 122k

Note: I know there was a ECU update early on in the 5th Gen's cycle for
a fuel-cut related issues that affected 5-spds. This is seperate from
the update you are interested in.

Naxray wrote:
There is a TSB, but it only applies to California emissions
vehicles (check the decal under the hood of your car), your
MIL("service engine soon")light is on, and your ECU is reporting
the 3-way catalyst error (P0420). If that's the case, you can get
it covered under the 8/80 warranty -- if you argue enough. But
if the light isn't on or your car isn't Cali emissions spec, you're
out of luck.

This answer is the correct one.

Nissan has numerous ECM software updates for a number of vehicles, but just
because there is new software does not mean you need it. The ECM software is
designed to address a specific problem .

The main thing to remember Nexray is this ... If it ain't broke, don't fix
it.




"njmodi" <njmodi2 (AT) yahoo (DOT) com> wrote

Thanks to all for the info!