I wonder if it's possible to have multiple modes on an ECU chip for us. I know I've seen chips that had as many as 6 different modes with some sort of dash-mounted button to switch between them. You have your stock program, a performance program, an economy program, a valet program. (The one I saw was on a truck, and it had a towing mode, too -- maybe it also controlled the tranny on that one.)

A valet mode would be nice at times -- drops the rev limiter to, say, 4000 and top speed to 75, plus runs more on the 'economy' mappings than the 'performance' mappings.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

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A valet mode would be nice at times -- drops the rev limiter to, say, 4000 and top speed to 75, plus runs more on the 'economy' mappings than the 'performance' mappings.

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HAHA[img]/w3timages/icons/laugh.gif[/img], great idea! But I'd restrict it more than that to maybe about to 25mph![img]/w3timages/icons/wink.gif[/img]

 

thanks for the replies, Let me know when the intro batch comes out, one other question, is there any way for the dealer to detect this software assuming you upload the stock program for dealer visits? (Ex S4 owner here, sheesh, that was fun changing chips for dealer visits) Thanks man! I would love to try out the intro software, being very VAG fluent from the S4. let me know

 

Very good to see that the ECU work is being done! Now for some tuning with a strong well engineered twin turbo. How about pulling out the rev and speed limiter? Or is that another mod elseware....






G35C 6MT CB Willow Aero Prem

 

The rev limiter and speed governor are in the ECU program. I'm sure they'll address that. You can remove the speed governor, but I wouldn't want to remove the rev limiter completely.. maybe just raise it a bit.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

I'd be up for testing if 1) I could retain my stock ECU and use a second one for programming and 2) you would fly out to Hawaii to help me with it since that's where I live! [img]/w3timages/icons/tongue.gif[/img]

-Rick

 

Going off topic slightly but why would you need to take off the speed governor? When are you ever going to go over 155mph?

 

well .. I guess on the track ... or whenever you feel it is the right time to open er up like that .....either way .. at least it is not governed.

I am very interested in getting one of these with multiple modes .... very cool

good luck bros... Im in Toronto... .let me know if I can help out at all.

later

 

The Rev/Speed governor 'values' have been located...
as for removing them, that is probably the issue..

there is NO need to raise the rev limiter at ALL on this VQ motor... The power drops after 6200 (with Rev limit set from the factory at 6800)... if you were to over rev the engine, at 7300 rpms, the crankshaft will start to stretch and you will destroy the engine.

to give a prime example. please take a look at the dynocharts...

Honda S2000 Motor (redline at 9k)
http://users.ev1.net/~shinglin/cars/s2k/dyno/s2k_1.jpg
you can see how this motor pulls all the way up to redline, hence a higher rev limit would benefit..

Now here's a 350z dynochart.
http://www.elistan.com/2003-02-01_dy...chaelD_001.jpg
Notice the drop off after 6200 for hp AND trq...


As for having multiple "switch over programs" i must remind you that this is NOT a daughter/piggy-back ECU program, it is a direct uploaded program to the computer's Flash Memory... to have a switch like you are talking about might be slightly difficult, i'll have to get back on you about that, but that's probably not going to happen....but might be in the future when in-car-real-time swapping via laptop will be come available...




--Cheston

 

How about pulling the program from the Coupe AT computer and Flashing the Sedan's? Or swapping into a Sedan the Coupe's AT computer?
Does anyone know if the Sedan and the Coupe have the same trannies?

 

Chebosto:
Good deal. I see your point on the rev limiter. My guess is that the speed governor could be increased to just prior to or at the rev limiter in sixth gear.
1st gear = 38MPH @ 6600 PRM
2nd gear = 61MPH @ 6600 PRM
3rd gear = 88MPH @ 6600 PRM
4th gear = 112MPH @ 6600 PRM
5th gear = 142MPH @ 6600 PRM
6th gear = 155MPH @ 5700 PRM

I wonder what top speed the extra 900 PRM would provide? Based on some quick calculations in an excel spreadsheet I would make an educated guess at 165MPH in 6th gear @ 6600 PRM. I wonder why they stopped 10MPH short of the vehicles potential…..

Conq:
Do we need it on the street, probably not unless you plan to partake in the next Gumball or Cannonball. I do think it is likely to be a factor at the track. The tire/rim size used at the track may change the whole issue with the speed governor.





G35C 6MT CB Willow Aero Prem

 

Tires.

Speed govenors are generally set to what the OEM tires can handle. For liability, so you don't blow a tire and have a wreck and sue them.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

Hi,

Another question, I have The G35 Sedan, can this ECU upgrade overcome the Sedan LSD so we sedan owner can stack our wheel/tire like the coupe do?

Thanks,

 

I would venture to guess that the VDC system is completely separate from the engine ECU, and that it would not be affected.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

any update on when the chip will be ready. I think i will update my chip befor i do any other mods so you can deffently count on me ordering one. So if you have any other information on when they will be ready i would aprecate it.

Are there any other companies working on ECUs for the G35 coupe?
Thanks