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Power FC Weird dyno with dip at 7,000

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Old Apr 18, 2004 | 03:54 PM
  #1  
Rx-7Addict's Avatar
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From: Chicago, IL
Weird dyno with dip at 7,000

I have:
downpipe, midpipe, catback, denso fuel pump, intake, airpump removed and the Power FC.

I had the car tuned and dynoed by Jason at the RX7store, and everything was normal. Was tuned for low 11s in boost, at 12PSI. I asked several people and I heard consistantly that I should make 290-310 RWHP with these mods.

The graph looked really weird. There was a dip at 5000-5500 and then a big dip at 7000 on both graphs.




First what I dont get is: Why am I making 340RWHP with these mods. Ive got a stock motor, stock twins with 62k on them.

Jason said that the car is definintely healthy, because they did several pulls to tune and he also drove it on the street to make sure everything was okay. He said that there was something messed up with the dyno.

So is my car god-like or was the dyno messed up, or was there something wrong with my car, ignition or something.

I'm not questioning Jasons tuning, the car runs great, but the graphs look weird.
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Old Apr 19, 2004 | 01:06 PM
  #2  
cewrx7r1's Avatar
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From: In A Disfunctional World
The dyno is hosed. You should be making less than 320RWHP corrected.
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Old Apr 19, 2004 | 03:02 PM
  #3  
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From: Salem, IN
Originally posted by cewrx7r1
The dyno is hosed. You should be making less than 320RWHP corrected.
depends on the tuning. i made 313whp with just a power fc, full exhaust, and the boost turned up. stock intercooler and fuel system, with 11.5:1 a/f
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Old Apr 19, 2004 | 03:43 PM
  #4  
rdavidsrx7's Avatar
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From: West Chester, PA
yeah I agree that the dyno is crappy, with such a huge problem from those dips I would not trust the peak values either. Isn't the peak HP usualy at lower rpms also with a stock port?
Some nice peak values though if they are acurate.

Bob
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Old Apr 27, 2004 | 02:32 PM
  #5  
Asleep's Avatar
7 Rx-7s since 1980
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From: oHIo
Correction factors will eat you up...on the dyno that isn't set up!
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