The very first time I dynoed, they didn't have a wideband, but I noticed that each run on the dyno sheet I was loosing hp and torque. Here are my hp and torque #'s on the first time of dyno
1 = 438.8hp & 473.3torque
2 = 432.1hp & 459.5torque
3 = 418.6hp & 458.0torque
and no A/F because of no wideband
2nd time dynoing and I also changed the mufflers
1 = 446.9hp & 506.4 torque @12.3 A/F
2 = 456.0hp & 470.1 torque @ 13.1 A/F
And the wideband was checking at the talilpipe, so how little of an exhaust leak will cause her to burn lean?
This is chet, I called you the other day on my sit, and thanks for helping me. I am trying to get my scanner up and running, but she doesn't like Windows XP, so I am going to copy my dyno sheets tomorrow. After I hung up with you I started to think after reading some other threads about exhaust leaks causing to burn lean, so I decided to ask your guy opionions instead of calling. Then if it is a leak; I can take it to the muffler shop and have them check it? Do you still want me to send the chip back before having the exhaust checked?
Also, whatever it is, I noticed a big drop difference in torque when dynoing her, we first ran her without the fan, then let the motor cool and turned the fan on, if this info helps?
Let me know guys, and I do appreciate everyones help.