the fastest i have gotten my 6 to is 122 i wish it would hit the 140 mark

 

For about a grand worth of management, you could get it to around 140.

 

There is a flash option available now, but the only time you are going to deal with situations where you might want/need to get above 120 is in a road racing / time attack situation, beyond that it really isn't necessary.

 

well next time I have the chance, I'm gonna see if it'll go above 120. I know of 2 areas to do it bc of nice straight interstate

 

well the thing is i love goin over a hundred before my 6 i had a 3000GT VR4 and i had it running 170 and ever since then i have set a goal for all of my vehicles to have the capability to run 170 or better anyone know where i can find a twin turbo set up for the 3.0L and a stand alone fuel management system

 

Only one twin turbo 6 in existence currently, and the only current FI option for the V6 ATM is a full custom setup. Though Nautalus (sp?) Performance is finishing up a supercharger option for the V6 that will come in 375 horse and 475 horse configurations. They currently have a running prototype and are ironing out the last few kinks in tuning. After that they just need to make the custom hood to clear the SC and the kit will be good to go.

Pic of the SC mounted to the engine:

 

Horsepower mods aren't going to get you to a higher top-end. It will get you there faster though. Your top speed will be based on rpm's, final drive, tire size, and co-efficient drag. Ultimately, the limitations of the top speed will be decided by the aerodynamics of the car. You can re-gear the final drive to let it a little higher into speed at lower rpms, but drag will factor more.