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Hello Everyone !

So I took my G6 to get dyno it last weekend and it ran a 144.3 WHP and a 169 Torque. Not was what I was expecting. i was expecting at least 220 WHP at minimum 200 WHP. My g6 has KN Cold Air Intake, I have a magnaflow muffler w/o resonator. I do not know what gives. I mean it was hot inside the DYNO place but still that is a lot of horsepower difference. Oh and I have 3.5 GT motor.

The Dyno was a Dynojet ill throw up the graph up soon once I find it and scan it
 

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That's about a 29% power loss through the transaxle. that's doesn't sound right. There was only a 15%~ power loss on the new GTOs through a transmission, turning a driveshaft and a rear diff.

The CAI and and exhaust might have leaned you out a bit. We need to see the dyno graph to see where your air/fuel was and what the power curve looked like before anything can be said for sure.
 

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Breaks Stuff
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Intake skewed the fueling or there is something else wrong with it.
 

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his 07 vert/her 07 coupe
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my 06 m6 stock GTO put down 342 RWHP/339RWT, an 06 auto GTO ran after me and put down 318 RWHP/324RWT. The parasitic loss in a auto vs manual is rediculous
 

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Fried like a Cheese Stick
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Unfortunately there's little data on the G6's but from what I've seen you should expect about 18% loss, so that would convert to 175/206. Definitely something going on there. Heat can make a difference, although I wouldn't think that much. Aftermarket exhaust often lowers torque numbers but your problem is hp, not tq. Like gotza & GTPprix said maybe you've got some intake issues :shrug:
 
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