Need Cheat codes for Gran Turismo PSP. Do they exist?

[simmode1]

I've search and searched and searched and I can't find any codes or cheats that will allow me to have full access to my tuning options in PSP Gran Turismo! I wanna reduce weight and add power! I know for a fact that I'm never gonna be able to beat S-Class on every single track, so I needs help!

[ProudNissanFreak]

Have you tried at GTplanet.net in the GT PSP forum?

[simmode1]

Oh no... I didn't think of that. I'll give that a try!

[MinisterofDOOM]

Cheat "codes" are a relic of the past and really not found in much of anything anymore, GT PSP being no exception.
There are hacks, but there's no simple button sequence that'll unlock stuff.

[dasoupdude]

I don't even think ANY of the GT games had any punch dial cheat codes, but there are some hilarious tuning glitches which enable your car to eventually travel higher than the speed of sound

[ProudNissanFreak]

^ Very true. Gt4 (I think) had a glitch on one of the tracks that bumped your speed to 3x greater than that of sound lol.

[simmode1]

^ Very true. Gt4 (I think) had a glitch on one of the tracks that bumped your speed to 3x greater than that of sound lol.

Yeah, I had that hack. Plus I had a Lamborghini race car, near infinite cash and mutiples of every car.

Seriously, ever since GT3, I do not have the patience to sit thru this long a** game. I needs hacks. I went to GTPlanet.net but didn't find anything. Maybe that was cuz I was searching for "cheat codes" instead of "hacks". I'm gonna start looking for hacks now... Thanks, guys...

Edit: I FOUND EXACTLY WHAT I WAS LOOKING FOR!!! YAY!!!

http://www.maxiconsole.com/psp-cheats/2 ... at%5D.html

is this sh*t? Suddenly I remember that it was my buddy that hacked my GT3/4 for me and I have NO FRIKKEN IDEA what this sh*t is.
I got some reading to do...