I have a 2005 g35x sedan I recently purchased. The car is essentially stock as far I know. I would like to know an affordable way to remove some of the limiters on the car.

On a 0-top speed run in manual shift mode, I reached about 130mph while still in 4th gear, but upon shifting up, the rpms rested below 5k and my mph would bounce between 128-133. So i'm assuming my car has at least a little more power that the current ECU settings are withholding.

So before I started modding anything else to the car, I figure removing these limiters would be the first thing I do. I understand that an ECU tune would be the most ideal way to gain max hp, but if there is a chip or tuner that can simply remove these limits for a lot cheaper, that is all I'm looking for. Advice from anyone who's done similar mods?

 

There's no "cheap" way to remove those limiters...it all comes as a package deal. My advice would be to figure out what mods you plan to do, do them, and then get a tune.

An alternative would be to buy an Osiris tune now and get it tuned for your stock setup, then use your last two revisions once you have all your mods done...but honestly I think that would be a waste.