Would they reflash the ECU and update software on a leased G35?? Thanks


Martin
2003.5 BS G35
Full Aero/Sport Package
Injen CAI
350Z Springs
Clear Corners
ADR M-Classic 19's Soon..

 

I just called my service advisor at West Houston Infiniti and
asked about the part number 31036-AL004. She told me that
part number is for the Transmission Control Unit it'self, not
software. I asked her if I could have the software upgraded.
She asked me to bring the car in and they would drive the car
to see if there was a problem with the shifting.....Well, since
I have added the ECU/TCU ground wires, my shifts have been
pretty quick and positive. I don't think they would consider
my 5AT to be faulty. I suspect they would not offer to upgrade
the TCU or the software. Sigh..........................What to do?

2003 TwBlue 5AT Sedan, sunroof,
Graphite Leather, splashguards, HKS exhaust,
14 wire Grounding kit, 350Z duct, Stillen CAI
Underbody rear diffusers, Drilled alum pedals

 

That pretty much the response that you will get from every dealer out there, with the obvious exception of certain dealers who have some diehard gearhead mechanics working there that you are close with. One dealer here in the bay area actually told a customer that upgrading the software in the TCM will "void the car's warranty". Unbelievable sh#te!

Gurgen

 

My dealer has those "diehard gearhead mechanics" and they are great and helpful. It's the moron in between me and them that causes me so much grief.

top 3 things I've heard from a service rep that blew my mind:

1) " What's a TSB"
2) "There is no way 1 million nissans were recalled - your internet friends are making stuff up"
3) "We apologize for blaming the pulley going out on you on your CAI"

This is only the surface!

2003.5 DP 5AT Sedan (E-thing but Nav)
14.2 @ 97.18
Injen CAI
10 Wire Hyper-Ground
Crawford Plenum (V4)
UR Crank Pulley
Polk ex-3500 Tweeter Upgrade/Shock Sensor/H-Liner Under Hood

 

I have a 2003 G35 Coupe 5AT, built around April 2003. Would the TCM upgrade make any difference?
Right now I can down shift and upshift without any problem.
I guess I am just asking if it worth the upgrade or might it be better to leave alone?
I will be getting TS to do a reflash since I have added a Greddy TT.

<font color=black>2003 G35 Coupe, Blk/Blk</font color=black>
<font color=red>Frisco, TX</font color=red>
TXREFI G35

 

OH MY GOD! what an engine! Do you eat Vettes and M3s for
breakfast? Get the GroundingGear ECU/TCU ground wires.
Your shifts will probably be just as good or better than a TCU
reflash.

2003 TwBlue 5AT Sedan, sunroof,
Graphite Leather, splashguards, HKS exhaust,
14 wire Grounding kit, 350Z duct, Stillen CAI
Underbody rear diffusers, Drilled alum pedals

 

Damn TX, that's one of the sweetest engine bays I've seen. Nice job. You're making me want a turbo now.

Your dealer can reprogram your TCU to make it behave like a 2004.5 MM which is different than a 2003 MM on a Sedan. I'm not sure if there were differences from your 2003 Coupe or not. I know many Sedan drivers complained about Manumatic mode behavior which I don't have any of those behaviors on my 2004.5, which is smooth, crisp and does exactly what it should, when it should. FA had a good thread about these diffs but I can't seem to get on there anymore.

I think your TCU program upgrade and your ECU reflash are independent issues from one another but the best thing you could do is ask Technosquare, they will know for sure without speculating. I'd be curious to hear what they say if you find out.


2004.5 Coupe/5AT/Ivory/Everything but chin spoiler/Z Tube-Popcharger/Crawford V5 Plenum on the way

 

Interesting. I called everythingg35.com (one of this site's sponsors) and ordered the Under Drive Pulley. They put me on hold and then the background music started up which says "Welcome to Infiniti of Scottsdale". This is a car dealer selling aftermarket performance parts... So I asked Frank (the guy who answered the phone when I called 888-216-5328) about the warrantee issues. He said that it's not a problem and they do it all the time and that this will not void any warrantee.. I think he is pulling my legs here. What do you think?

I am just surprised by the fact that the card dealership is selling performance parts that can cause a void on your warantee. I am having a second though now. I am in the SF bay area and usually take my car into Frontier Infiniti for my regular checkup and also bought my 2003.5 G35s from there.

Anyone have experience with them? The pulley is not going to be shipped till Monday so I got time to cancel my order.
-Prat

 

pratG35,

Check page three of this thread.

From first hand experience I can say Infiniti of Scottsdale (AZ) is a mod friendly dealership as is EverythingG35.


DaveO - 2003 G35 Sedan / DP / Willow / AT / Premium / Sport
350Z Engine Cover, T-Stat & Air Duct / Stillen CAI
GG 7-Wire H-G Kit / TS ECM / E-Fans
Street Edge TC / B&M Cooler / Stillen Exhaust

 

Chris,

that's a sweet setup man! Call TS, they will hook you up wth the correct program.

Gurgen

 

BIg Thanks to InfinitiTech (Vince). Today on his way home, he stopped by my work and upgraded my TCM to version same as Gurgen i.e.31036-AL004. Of course I paid him for it and got to spend an hour picking his brains. He is a really nice guy and knows his stuff about the Infiniti cars. Vince, we are glad to have you on this post.

I can't wait to go home now in an hour and see how the shifting feels. Will keep you all posed.
:-)
-PratG35

 

My God,

Talk about going out of his way. Vince has proven again that he is all-out awesome !!! YOU DA MAN , Vince (to use my students' language). You definitely take the prize for the most helpful Tech of all time. I am glad you are a member of this board and this community. We need people like you!

Good luck with yout upcoming G35x purchase.

Gurgen

 

No problem man, just trying to help people out with what I can to help out the Northern California guys.My personal email is mtbikervinman@yahoo.com, feel free to drop a question if you have one, or whatever......

 

Update, On the way home I can definitely tell the difference. The AT is much more willing to down shift, one time it got me by surprised when it shfted down to 3rd, from 5 going about 45 mph and I was in the meat part of the RPM right away. The old TCM just won't do it. Also shifting is more clean and crisp. I can now get a chirp on my 1st gear from dead stop with no left foot on the brake. Did not try MM yet.

I am VERY happy with this mod... Man I love my G!!!!

Cheers to Vince again .... [img]/w3timages/icons/smile.gif[/img]

Next is the full "factory default" reset. Something new I just learn and guarantee to be better than the 12HR reset. Ha..

-PratG35

 

Yeah...Vince is the man. He did mine after he did yours. I feel really lucky that he lives so close to where I work. I hope he doesn't move anytime soon.
After the TCM reprogram, I can definitely tell a big difference. Mine had the AL000 rev. (really old) and had the most annoying lag during shifts. Now all gone.