Colorado-tuning a California Car

[Kamidake]

Alright so I'm going to move to Colorado from California in a few months. I realize the atmospheric pressure in Colorado is quite lower up at 5,600 feet then compaired to down here at sea level. Ergo, my main concern is performance and I would like to keep my car running as nicely as possible.
My question is: What tuning should I do to my car to keep it running nicely?
I drive an '86 Nissan 300zx Turbo.

[Conrad]

Not sure if this is right.... but.. I believe let it run pig rich till you get here and get it tuned here we have several people around here who can take care of you. But it may run rich leaving it alone and coming here

Anyone else is it dangerous to go down in elevation or up?

[Brian]

It will be fine getting up here. It will just run super rich when you get here. You will just need someone to run a wideband on it and get it leaned out for the higher elevation and thinner air.

[-=[Juztin]=-]

down

[saabracr]

It depends on the configuration of the car. If its stock, it won't matter.

[doctorstupid]

It depends on the configuration of the car. If its stock, it won't matter.
:werd:

Those years 300ZX's use MAFs as I recall, which will be quite aware that less air is entering the engine, and will inject less gas. the O2 sensors double check that calculation.

It shouldn't present any issues, though some would advance timing 1° for every 2,000' increase in elevation. Since we're stuck with crappy old 91 at the pump, I wouldn't.

[Enthalpy]

Don't advance the timing. Your timing will already be optimized out of the factory.

Just move here, drive your car and enjoy. Nissan has already taken care of this stuff for you.

[doctorstupid]

Don't advance the timing. Your timing will already be optimized out of the factory.
That's a BOLD statement, my friend ;)

But I agree, don't advance it, I was simply pointing out that some would recommend it, but because we're stuck with lower octane, it's likely not a good idea.

[Kamidake]

So I drive it there like it is now, pretty much stock. When I get there should I go to a special shop and have it tuned for the low density? Or do you suggest leaving it and see what happens?

[doctorstupid]

Leave it, it won't need any adjustment.

[Enthalpy]

That's a BOLD statement, my friend ;)
The word, "optimize" can be subjective. ;)

OEMs often pull some timing for emissions. However, that doesn't mean THIS PARTICULAR one did that for THIS PARTICULAR platform.

[doctorstupid]

The word, "optimize" can be subjective. ;)

OEMs often pull some timing for emissions. However, that doesn't mean THIS PARTICULAR one did that for THIS PARTICULAR platform.
I know, that's why I was calling it a bold statement, it's both subjective and not necessarily applicable.

You and I agree, and argue about it, way too often :D

[boostedEG]

Leave it, it won't need any adjustment.


yeah, the cars we drive were all built in places accross the country and shipped out here, they all left the factory with the same tuning whether they were coming here or new york.

most EFI systems can compensate for changing conditions (to an extent), some more than others.