Just to know what are the diffrent between stage 1,stage 2 and satge 3.

 

Personally, I think the "stage" upgrade formula, which is vaguely defined at best, is a silly method of measuring the modifications and performance potential of any given vehicle. I think it should be left for ricers, not performance enthusiasts. I guess I would be at like stage 9 or something... WHy do you ask?

 

Cause if you read some of post thats on here i guess the stage are really up to the individual most common thing are TB,Access Port ,and uppies

 

I agree with Ipozestu on this one.

If you do want to go by stage levels, refer to Cobb's definitions.