Honda Accord (1990 - 2002) Includes 1997 - 1999 Acura CL

Anyone else ever dyno their Automatic 4cyl?

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Old Dec 13, 2002 | 06:46 PM
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psyphre's Avatar
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Default Anyone else ever dyno their Automatic 4cyl?

I did and in 3rd 'gear' I put down a whopping 112.5whp and 122.4ft-lbs. Then we did a powerloss run, 60hp So I 'had' 172bhp which is about right cause I had an intake, exhaust, adv timing, different valve adjustment, and a rebuild bottom end.

Just curious if anyone else noticed such huge drivetrain losses?
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Old Dec 13, 2002 | 06:47 PM
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Default Re: Anyone else ever dyno their Automatic 4cyl? (psyphre)

explain the powerloss run plea
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Old Dec 13, 2002 | 06:59 PM
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Default Re: Anyone else ever dyno their Automatic 4cyl? (Accord94DX)

yes please do. is that supposed to be 172 with your f22? or I thought you said somewhere you got an h23, that would make more sense.
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Old Dec 13, 2002 | 08:03 PM
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Default Re: Anyone else ever dyno their Automatic 4cyl? (93accordEX)

Sorry, this would be on my old 5th gen that was stolen just over a year ago. Yes that would be the f22b. The power loss run is when you redline in the appropriate gear and then start the dyno run as you let off the gas and decelerate. In a 5spd the dyno just spins for a while an then starts slowing down. The autos just tend to slow down as soon as you let off the gas. i did this test with the crx i had for 2 months. 94whp and 110bhp - 16hp loss or 17% loss.

Dunno if these pics will show up but here goes:

Accord Power


Accord Powerloss


CRX Power


CRX Powerloss



oh well, cut and paste from properties.


[Modified by psyphre, 1:27 AM 12/14/2002]
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Old Dec 13, 2002 | 08:14 PM
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Default Re: Anyone else ever dyno their Automatic 4cyl? (psyphre)

i hope to run mine soon



[Modified by KTeller8, 11:14 PM 12/13/2002]
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Old Dec 15, 2002 | 05:08 PM
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Default Re: Anyone else ever dyno their Automatic 4cyl? (KTeller8)

it's kind of a pain in the **** to dyno the autos cause they like to kick down when you punch it.
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Old Dec 15, 2002 | 05:26 PM
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Default Re: Anyone else ever dyno their Automatic 4cyl? (psyphre)

dyno pics dont work
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Old Dec 15, 2002 | 05:28 PM
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Default Re: Anyone else ever dyno their Automatic 4cyl? (ArchAngel Sabastian)

dont you just start out and go from there.. why do you need to run and then punch it?? dont that mess up the powerband
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Old Dec 15, 2002 | 06:20 PM
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3700 Vtec's Avatar
 
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Default Re: Anyone else ever dyno their Automatic 4cyl? (psyphre)

I've had my 6 gen 4cyl auto dynoed. It's only making 130 whp and 132torque with cai, catback, UR crank pulley (I'm going to put the stock one back on), and VAFC.

I'm aware of some power loss on the dyno, though I didn't know you could calculate that loss with any accuracy.
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Old Dec 15, 2002 | 08:02 PM
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Default Re: Anyone else ever dyno their Automatic 4cyl? (KTeller8)

well usually you want a 3rd or 4th gear run, so if you are in 3rd in an auto and then puch it, its going to downshift.
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Old Dec 15, 2002 | 08:07 PM
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Default Re: Anyone else ever dyno their Automatic 4cyl? (ArchAngel Sabastian)

yeah sorry about the pics not working. i'm inbetween hosts right now.
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