i was wondering what the cheapest method to add more horsepower or torque to my 07 g without voiding any warranty or loosing gas mileage would be.........

 

a cold air intake.

Try adding a teaspoon of milk for every gallon of gas you put it. Ive heard of HP gains of up to 50%.

 

how cheap is cheap to you?... give us a price range

 

nitrous is the cheapest method.... not the safest unless you know what you are doing. Plus you can easily install/uninstall a small dry shot kit without the dealer knowing. But if you blow your engine then they will probably know what is up.

 

Agree with imnotplutonium about Nitrous. Most shops can do a shot for around $1k +/- depending on set-up, shot, etc. Just my .02!

 

intakes wont really give you too much hp gains.. just sound. i recently got my fujita dual intakes in.. awesome... around 300 bucks shipped. look into new exhaust systems anywhere from 700 +
good luck

 

you see the probl;em is that i really dont want to change my exhasut note because i was watching clips of the stillen exhaust on the 07 g and i didnt like the sound. it takes away the screamer effect but as for cold air intakes what brand would you recommend and whats the hp gain like? am looking to spend $300-$1000 but i want to abstain from using nitrous

 

The Cold Air intake is a rip-off, you may see a 15-20 raw HP gain, but real-world it's 5hp to wheel at most. But at a price of $400 or $500 for basically 2 airfilters and 6" bent pipe, you are getting your **** reamed, it can't be more then $12 in total parts. Don't waste your money. the car is rippin fast as is, and really the only increase you could do that would be noticable is to either do nitrous or see if anyone makes a bold-on 2 cylinders to turn the V6 into a V8... havn't seen one of the these upgrades yet.

Also the Cold air intake also does change your engine note.

 

I have heard that some special stickers can add 10-15 RWHP, I personally haven't tried it. Can someone confirm with a dyno run.

 

Those erector set spoilers crank up the HP as well...

 

Trade it in for a used Z06

 

Are there no superchargers for the 2007 G35 yet? It might be out of the price range, but a factory installed supercharger will keep your warranty, increase your horsepower and not affect your gas mileage that much.

Does Infiniti/Nissan offer a supercharger kit? If anyone has details, I would be curious to know as well, since I do not want to void my warranty or change my MPG either.

 

^^^ I dont think so but my dealer said they did. He then pointed to the supercharger made for the '06 G. He did not seem to be too knowledgeable

 

put clorox bleach in your oil, it cleanses the rotating assembly.

 

Winter air in the tires helps also.