Lost horsepower
08-19-2008, 03:07 PM
#1
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Lost horsepower
Just bought a 2004 rx8. It runs great and I knew it was supposed to have around 220-230 horsepower so I took it to a dyno. It dynoed at 154hp. How can I get that lost horsepower back??
08-19-2008, 04:06 PM
#3
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yup, the hp figures you read on window stickers or reviews are always measured at the crank.
Drivetrain loss gives you wheel horsepower.
Stock 8's do 170-80, some go as high as 200hp but it all depends on what type of dyno.
mustang dynos read lower then dynojets.
Drivetrain loss gives you wheel horsepower.
Stock 8's do 170-80, some go as high as 200hp but it all depends on what type of dyno.
mustang dynos read lower then dynojets.
08-19-2008, 04:32 PM
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I don't know why people are SO obsessed with HP figures.
The car was fun as hell when you thought it was 230 hp, right?
now some machine tells you it's only 154 hp.
Does that make the car any less fun?
The car was fun as hell when you thought it was 230 hp, right?
now some machine tells you it's only 154 hp.
Does that make the car any less fun?
08-19-2008, 04:43 PM
#6
Power!!
154hp is a useless number to us by itself.
edit: That being said there are two common culprits that rob hp on the RX8. Bad ignition coils and a bad cat. converter. The dyno plot will show if you have either of these problems.
Last edited by shaunv74; 08-19-2008 at 04:52 PM.
08-19-2008, 05:24 PM
#7
Piston-free 07.11.2007
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I can't remember at the moment exactly what it is, but isnt there an issue with
the DSC system and dynos that can also cause issues? I remember reading on here people commenting about disconnecting sensors on the rear wheels while on the dyno.
the DSC system and dynos that can also cause issues? I remember reading on here people commenting about disconnecting sensors on the rear wheels while on the dyno.
08-19-2008, 05:32 PM
#8
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nope.
All you need to do is hold down the DSC button to disengage it.
All you need to do is hold down the DSC button to disengage it.
08-19-2008, 05:57 PM
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08-20-2008, 12:52 PM
#14
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08-20-2008, 11:06 PM
#16
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access Port will NOT get you that kind of HP from an N/A
08-20-2008, 11:09 PM
#18
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08-20-2008, 11:18 PM
#20
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nope, I still remember beating almost every other M/T there. 
I have more mods though...
I have more mods though...
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