est from gtech I know it isn't accurate but I ran 5 runs before and after the headers and intake and took the average. On the gtech you put in weight to calculate hp and I had the car weighed at Doug's auto recyclers in my hometown so I know an exact weight. How do you get photos to upload on here, I still can't get it to work. I have pictures on my iphone but do I just put the link on here from photobucket or do I actually upload them.