MarkW

It changes spark, fuel delivery, and air flow. More fuel, more air = POWER! The numbers are 30HP and 40lbs of Tq. That brings the totals to 330HP & 365 Tq. Remember, its all about more air in with more fuel, and then getting it out... more power!!!!

If you have a high performace tire, (speed rated) there is a lot of nylon in the tire. So when the tire is cold, it will have flat spots. This is normal for a speed rated tire. This will go away after the tire heats up. If it is not going away, you might have a tire out of round. Try having a match balance done, this will tell you if one is out of round or not.

I agree with Tom, its the valet key. Especially if it is a different color.

Dude I have only one thing to say. SRT intake and PC upgrade, and hold on!

I have a 2003 GS 430. So far I have put a SRT Intake and piggy back computer. It has the Borla exhaust, which is really starting to sound good, don't get me wrong, it sounded good to start. Now that it has been on the car for a year or so, it seems to be a little louder, which is just fine. :D I just recently replace the factory rubber with a set of Kumho Ecsta MX, (255x45yr17). Nice and wide, and very sticky once they heat up. Had the car at 140mph and the ride was awsome!!! Lots of fun jacken with the Mustang GT boys, leave them scratching thier heads when you run off a leave them. :D

:D Check with Swift Racing, see if they have anything. They are a Lexus performance dealer. swiftracing.com

:D Have 2003 GS430, has Borla Exhaust, SRT intake and PC upgrade, the car hauls !Removed!. Must say it is fun giving the Mustang GT boys a bad time.

I do not have any info on those two exhaust systems for you. I do have the Borla Exhaust on my GS 430. It has a very deep sound, which, over time with use, is sounding really good. It is much cheeper than the GReddy, easy to install, and very nice looking. If your not set on the GReddy, and open to other avenues, would definately check it out.