Switching from Flow-40's to Magnaflow..
#41
well, I think the low end has gotten better for sure... and part throttle seems to be a little snappier.
As far as WOT... it maybe feels like it pulls harder up top, but its not that big of a difference. The temperature outside has been fluctuating like crazy lately (one day its 95, then 70, then 80) so who knows if that has anything to do with noticing a difference. My truck is real sensitive to ambient temps, it likes to pull timing on the hot days so who knows. I am sure it picked up at least 5hp or so.
As far as WOT... it maybe feels like it pulls harder up top, but its not that big of a difference. The temperature outside has been fluctuating like crazy lately (one day its 95, then 70, then 80) so who knows if that has anything to do with noticing a difference. My truck is real sensitive to ambient temps, it likes to pull timing on the hot days so who knows. I am sure it picked up at least 5hp or so.
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