i'm thinking of upgrading my computer chip which one is best for performance and how do i install it?

 

Osiris. Go here: http://www.uprev.com/ and find a place to get it done
(Or you can just do it all online but everythings better with some real time dyno tuning)

 

If I was looking to get my car tuned, my choices would be Osiris or Cobb. They're similar enough to be the same... and with that said, it now comes down to personal preference... you can find the Osiris with a dyno tune for cheaper, but the Cobb has a physical controller with screen (Osiris uses controls on the steering wheel and rev light to tell you which map you've selected)

 

Uprev Osiris fo sho!

 

BTW, I have Osiris... just not trying to sound too biased!

 

I've heard many stories here with G35's running the Osiris tune, offering 5 maps and all that controllable through your cruise control.
I'm looking to get that done once I get either my hfc's or t/p's don't know which one yet at the moment though.

 

Haven't heard many good things about cobb to justify the price...

 

Cobb was great for EVOs and Subies. Never had any experience with their AccessPORT on any Nissan yet, but I do know they never released it for our cars for so long was because they had plenty of bugs to work out...

 

+1 for Uprev/Osiris!

 

Lets say i got some bolt ons and nitrous with the osiris tune having 5 maps i can have 1 tuned for when i want to spray and switch to another for when i dont want to use it? If so i am going with osiris because i was just going to get a regular reflash for nitrous but then when not wanting to use it my car wouldnt be at its full potential correct?

 

Yes. You can get 5 maps programmed (one being the stock map) and then can switch between them with the cruise control buttons on the steering wheel in like 3 seconds.

I've got:
1 stock (so if I ever go to the dealer they won't know the timing and ****s been messed with)
2 power (for maximum performance)
3 economy (to save gas when I'm commuting)
4 valet (for if I ever let friends drive, limits it to 4500 rpm/ 70 mph)
5 anti theft (1200 rpm/ 8 mph)

But thats just what made since with my set up, you could easily get a NOS map mixed in there.

 

You can get 5 different maps for anything you want. It doesn't have to be the same as other people's lists. You can have one for NOS and 100 octane, a map for 100 octane alone, a stock map, and a tuned street map, etc...

 

can you still use the cruise control and also how do you know what map your on?

 

Can you use osiris for any year g35? I heard cobb doesnt work with early 03-04 models?

 

Yes everything works just like before.

To change maps you hold down the cruise button and press the cancel button 1-5 times depending on which map you want. Once you release the cruise button the set light blinks the corresponding number of times. Easy as pie. Its up to you to remember which map is which number tho.