Richmond VA Dyno Day Results 5/4/13

[vtmike]

Originally Posted by UncleFester

Probably stand to lose HP if you change anything about the stock intake besides the filter.

What gear were the pulls in? Auto the same gear?

Runs were done in 4th, as far as I know the auto was done in 4th too not sure though. Perrin intake hose isn't supposed to hurt anything. I've seen conflicting opinions on the large resonator. This might have convinced me to pick up the TRD intake.

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[xjohnx]

The results are puzzling, although consistent. I put down almost the same #'s on an earlier revision of this e85 tune back in October.

Both times I had just reflashed from pump to e85 the night prior to dynoing though. I'm guessing with some more time for the ecu to relearn the power will pick back up. Maybe I'll redyno in a couple weeks.

The only other thing that I could see potentially being an issue is that I forgot to disable TCS, which apparently can cause some interesting results on the rollers.

[vtmike]

Originally Posted by civicdrivr

I have, and he said it looks good. Right now, I'm thinking there might be an underlying
issue (head gasket), which I have an appointment on Wednesday for the dealer to take a look at.



Yea, the results were odd, but their dyno reads low. There was a Boss 302 that put down 388, most have been putting down 410-420 stock.

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That would make since. (410/388)x(most of our results) comes out to be more in line with what I was expecting. The outlier is wdninja's car which could be a factory freak and your results which might indicate a head gasket (hopefully not though.

My traction control was on too.
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[xwd]

Originally Posted by swift996

Here's mine - running way too rich up top or it would probably make more power
AEM Intake
Unichip
FA20CLUB EL Catted Header

Is the unichip tune specific to the header or the intake? Do you think the torque dip elimination is due to the header? It's good to finally see a 3rd party dyno which shows the dip basically eliminated. Not the highest peak torque but definitely the car I'd rather drive. Clean up the top end and you'd be at 185 WHP or so.

[swift996]

Originally Posted by dwx

Is the unichip tune specific to the header or the intake? Do you think the torque dip elimination is due to the header? It's good to finally see a 3rd party dyno which shows the dip basically eliminated. Not the highest peak torque but definitely the car I'd rather drive. Clean up the top end and you'd be at 185 WHP or so.

Yes the unichip map is for my intake with "headers" so not specific to my headers but the parameters have more to do with the intake side. The headers are definitely the culprit of removing the torque dip.

[vtmike]

I did some logs with torque today for a/f ratios during the dip at wot. The results were for 12.1653614 for the time I was at wot throughout the rev range.

Are the measurements pretty reliable using torque for this? I think it's supposed to use the factory wide band o2 sensor but it's weird that it measures that same exact value the entire time at full throttle with no fluctuation.


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[swift996]

Originally Posted by vtmike

I did some logs with torque today for a/f ratios during the dip at wot. The results were for 12.1653614 for the time I was at wot throughout the rev range.

Are the measurements pretty reliable using torque for this? I think it's supposed to use the factory wide band o2 sensor but it's weird that it measures that same exact value the entire time at full throttle with no fluctuation.


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I get the same reading from torque/oem 02 sensor. I'm wondering if they only read in a certain range.

Also, it seems like the numbers are down about 5% compared to the other dyno numbers I've come across with same/similar setups to the cars there. It will be nice to get the raw files and change some of the corrections to see how they read/look.

[vtmike]

Originally Posted by swift996

I get the same reading from torque/oem 02 sensor. I'm wondering if they only read in a certain range.

Also, it seems like the numbers are down about 5% compared to the other dyno numbers I've come across with same/similar setups to the cars there. It will be nice to get the raw files and change some of the corrections to see how they read/look.

That's interesting. Have any of you guys with Ecutek been able to log a/f ratios richer than the 12.1 value.

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[OrbitalEllipses]

I believe the OEM A/F sensor isn't a true wideband.

[FA20Club.com]

Originally Posted by regal

but this is still very impressive, no torque dip in comparison to the other two plots, as much HP s the E85 tune above. I am impressed Real world dyno confirmig that headers + tune add 20 HP and cure the torque dip. Very encouraging.

so when can i expect your order

[FA20Club.com]

Also your Dyno was on SAE that might explain your lower numbers vs the rest of us who use STD correction

[mad_sb]

Originally Posted by Lonewolf

@civicdrvr

If you're running super rich I could see why you seem to be down on power.

Grayish smoke is usually oil....and white like you said is usually coolant from a leaking headgasket...I hope its not either...

It is really hard to tell what color the smoke truly is on the videos from the way the light is shining at the back of you car from the outside...

13:1 post catalytics is not super rich. Even if it were 12:1 pre cat that is still not super rich. NA best power is going to be between 12.8 and 13.2 but it should not be black smoke rich at 12:1.. more like 10:1.

[mad_sb]

Originally Posted by OrbitalEllipses

I believe the OEM A/F sensor isn't a true wideband.

It is a wide range sesnor. It reads from 12.1 up to around 18 or 19. Not as much swing on the rich side as a typical wideband, but wide enough range for NA tuning.

[vtmike]

Originally Posted by mad_sb

It is a wide range sesnor. It reads from 12.1 up to around 18 or 19. Not as much swing on the rich side as a typical wideband, but wide enough range for NA tuning.

That explains it then. Only problem is I have no way of knowing if I fixed the problem now without adding a wideband with greater range.

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