spederman

A local shop had dyno day this weekend. I had my completely stock S281 dynoed for the first time. I was pretty dissapointed. I thought I would get more HP. My air/fuel curve also looked really off. Am I running rich or lean according to the graph? There was a 04 GT there, that only had catback exhaust and pulled the exact same numbers as my car. I just thought with a saleen tune (even thought its conservative), underdrive pulleys, exhaust with x pipe would pull more than a regular GT. Take a look and tell me what you think.

Birdieman4

Well, your a/f ratio looks ok on top, but it could be cleaned up on the bottom some. Your #'s look pretty good overall. You are down a few horses, but it's not too big a deal. My n/a stock 01 S281 dyno'd almost 250 rwhp. Most stock S281's your year dyno around 240-245, so you aren't too far off. What was the weather like the day you dyno'd? That can make a difference.