Can you reprogram the G35X AWD Bias???

[pits200]

Please bear with me as I pose this question to all the mechanical gurus, it may sound ridiculous.My girl is the one with the 04 G35X and loves the car overall. But her and I don't prefer the RWD bias in inclement weather until slip is noticed, and therefore we need some more input.

This is were my quandry lies, would it be possible to reprogram the G35X when it is in snow mode. Instead of the car reverting back to 100% RWD bias over 18mph(not exactly sure the speed), would it be possible to reprogram the computer or piggy back it so that the car is atleast a 25/75 split all the time when snow mode is engaged, or just something better than the 0/100 split until slip is noticed.

Remember now, I am not familiar with the mechanics of AWD. What would limit someone from doing this, does the problem lie in programming the cars computer or do the mechanics of the awd system limit this from being possible.

I think I read that the new G35X is actually a 25/75 split in snow mode despite the speed.(Even over 18mph)

Thanks for the help and I look forward to all responses.

P.S, the Mod told me to post it here because this is the place where all the "Techy" guys can answer it. So good luck....

[Q45tech]

Since you've been posting around all sites, how many thousand dollars is it worth for someone to de-encode, decompile, and otherwise make the code readable so you could begin to redesign the software.

Timewise I expect it is a 100 hour project to start.

The engineering question is whether the system is robust enough to deal with continued stress of 4 wheel driving.

Might be easier to trade for an Audi?

[maxnix]

But her and I don't prefer the RWD bias in inclement weather until slip is noticed, and therefore we need some more input.

Then you and she purchased the wrong car. Should have bought one of the Audi/Honda/Acura cars that are FWD designs masquerading as AWD.
Modified by maxnix at 11:27 PM 5/22/2007

[pits200]

Then you and she purchased the wrong car. Should have bought one of the Audi/Honda/Acura cars that are FWD designs masquerading as AWD.

To be honest, we were unaware that the car had this design during snow mode when purchasing it. If you read many reviews, you will notice that they say when you engage the snow mode that it makes the car change features. They fail to mention that after you go 18mph that the car reverts back to 0/100 split. It is very very misleading, I guarantee that many people who purchased the X were unaware of this also.

As for your advice, hindsight is always 20/20 and you don't really contribute much to this thread and my question.

[elwesso]

Welcome to NICO! Sorry I didnt see this sooner.

Anyway, I am looking into this right now, I have to sift through my multitudes of manuals.

However, before really looking in depth, my incliniation is with Tech. Would the system be able to handle the stress of driving in AWD mode all time? I have no way of knowing for sure, I will have to look into it.

There is probably a way you can trick it to stay in that mode all the time, but would you compromise something else? I doubt anyone has tried it.

[maxnix]

As for your advice, hindsight is always 20/20 and you don't really contribute much to this thread and my question.

Research is foresight if done competently. The rear wheel bias of the AWD is considered a beneficial feature on the G35x like it is on the Carrera4. It is well known among all reviewers. If you understood the original car's dynamics, you would understand why it's biased that way. There was even a sidebar in one review where they took a AWD G35 around the same track as a RWD one and exceeded the latter's times because of the balance of the AWD, and in spite of its extra mass. Hmmmm.....what does that imply? Maybe a reprogram is a really bad idea, unless you know more than the Nissan engineers? Who will assume the liability for the changes?

If you are really serious about winter drinving, you need to get serious winter tires when the snow season is upon you. AWD and the wrongs tires ("all season" or "summer") will not serve you as well as winter tires on RWD with LSD. Simple fact of life. Can't harvest wheat with a hammer.

Isn't a car most people's second largest purchase in terms of expense?
Modified by maxnix at 11:28 PM 5/22/2007

[pits200]

Research is foresight if done competently. The rear wheel bias of the AWD is considered a beneficial feature on the G35x like it is on the Carrera4. It is well known among all reviewers. If you understood the original car's dynamics, you would understand why it's biased that way. There was even a sidebar in one review where they took a AWD G35 around the same track as a RWD one and exceeded the latter's times because of the balance of the AWD, and in spite of its extra mass. Hmmmm.....what does that imply? Maybe a reprogram is a really bad idea, unless you know more than the Nissan engineers? Who will assume the liability for the changes?

If you are really serious about winter drinving, you need to get serious winter tires when the snow season is upon you. AWD and the wrongs tires ("all season" or "summer") will not serve you as well as winter tires on RWD with LSD. Simple fact of life. Can't harvest wheat with a hammer.

Isn't a car most people's second largest purchase in terms of expense?

Modified by maxnix at 11:28 PM 5/22/2007

D

Ok now, you have posted many times on this site, so I know that you are familiar with reading an entire post before replying.

I KNEW the car was 100% RWD bias during regular driving while SNOW MODE IS NOT enabled. I do my research and knew that the car is rwd until the front wheels need to have power applied to them, that is part of the reason that I bought it.

LISTEN CAREFULLY AND READ WHAT I AM SAYING BELOW.....

I am complaining about when the car is in SNOW MODE, not during regular everyday driving. I don't know how many times I have to post this. I do not want the car to be a 50/50 split during sunny summer days. Only when the SNOW MODE is enabled. I only want to find away to reprogram the system when the SNOW MODE button is pushed down.

The reason for this is because if I push down the SNOW MODE button, that means that the weather is nasty and I could care less about the performance benefit of RWD bias...

And Thanks for the welcome.... Thanks for all the responses

[bullittandy]

I wish I had a dollar for everytime Maxnix insults a new member. I also wish that I had a dollar for everytime he doesn't understand the post but answers anyway.

That would be a very good investment scenario.

[pits200]

Ha, he does seem the controversial type. I could care less if someone bashes my logic, because atleast then I would realize that this is not feasible and that I am barking up the wrong tree.

I just don't want answers that tell me I bought the wrong car or to get dedicated snow tires. Yes, I understand all of that and realize the importance, I just want to know how reasonable trying to do this can be.

[elwesso]

He does have a point, but he didnt have to be so blunt about it...

At any rate, I have to find my G35x service manual, apparently the AWD system is not in the manual I have handy, so I'm gonna get another one and report back...

[bullittandy]

I don't think its possible to reprogram it without all kinds of crazy unknown sideeffects popping up. I'm with you on the crazy snow mode function though, my wife's 01 Volvo V70 has a "winter" button on the transmission whose function I can't understand, basically it feels like the floor mat is bunched under the gas pedal in "winter" mode.

Sorry Wes, he actually he doesn't have a point. The original poster said he was not contributing. The reason- because he misunderstood the question.any chance he's confident enough to say "Sorry, you're right, I misunderstood the point."