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Here is an 09 R/T Auto that we did the 8lb Arrington Kit on. All Stock except for the S/C Kit. 155RWHP over stock.
 
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Great midrange torque. I wonder why it really falls over after 5400? This is just idle curiosity, since I'm considering swapping the 6 psi pulley in my car for an 8psi pulley.
 

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*Day dreaming*..Maybe in a year or two I can get a Maggie

Nice numbers! What I really like is that torque curve..or torque line lol
 

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Great midrange torque. I wonder why it really falls over after 5400? This is just idle curiosity, since I'm considering swapping the 6 psi pulley in my car for an 8psi pulley.
Likely the VVT on the cam TF. Mine has a definite dip right around 5500RPMs as well. It even shows up in the TT Dyno software. It's not as pronounced as the one here, but I have a bit bigger cam which likely helped.
 

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Discussion Starter #5
This one is really pronounced because that is about where she shifts. The MTCM would more than likely take care of that.
 

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Great numbers. I'm also considering going to an 8psi pulley. What numbers should I expect to see with a 6 speed?
 

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SoCalRT are you using the factory air box? If so, yanking that out for a high-flow filter will give you gobs of power.
No I made my own cold air intake out of 4" aluminum tubing through the fender.
 

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