Richmond VA Dyno Day Results 5/4/13

[vtmike]

[quote=mad_sb;913908]

Originally Posted by vtmike

So, i assume Accelerator PedalPosition D(%) reads about 54 when at WOT?

Your long term trims through the dip area are showing +10% so your wot AFR there is 10% richer than the fuel map calls for. They tapper off some as the rev's climb and you move into higher maf output areas.

I hate long term trims on these cars, they are applied in open loop and will crush your tuned afr, or in this case the desired factory afr.

That's correct, 54% is full throttle. So you don't think it has anything to do with maf reading wrong air flow? My dyno showed 10 or below in that area.

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[mad_sb]

[quote=vtmike;913942]

Originally Posted by mad_sb

That's correct, 54% is full throttle. So you don't think it has anything to do with maf reading wrong air flow? My dyno showed 10 or below in that area.

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It's stupid rich for sure in the dip and up top but I did not see anything in your modlist that should cause an issue with the maf... Maybee get some maf cleaner spray and give it a cleaning... K&N's have been known to be over oiled from the factory. Have look at the air straightener in front of the maf, make sure everything is as it should be with the airbox and filter assembly.

Other than that I think you just need a good tune. You may have jumped to a little higher load and that combined with the long term trim dumping fuel.....

You could try swapping sensors with someone if you want.

[vtmike]

I'll clean the maf. I removed the large resonator that attaches to the box. I'm wondering if that could be the culprit.

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[vtmike]

[quote=mad_sb;913908]

Originally Posted by vtmike

So, i assume Accelerator PedalPosition D(%) reads about 54 when at WOT?

Your long term trims through the dip area are showing +10% so your wot AFR there is 10% richer than the fuel map calls for. They tapper off some as the rev's climb and you move into higher maf output areas.

I hate long term trims on these cars, they are applied in open loop and will crush your tuned afr, or in this case the desired factory afr.

I wonder if they fixed the issue with the maf sensor with the trd intake. Here's a dyno I found and the a/f looks pretty good.



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[Ryan86]

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

Were you the only one with a header? As your chart did not show the prominent dip compared to the others?

[xjohnx]

Originally Posted by Ryan86

Were you the only one with a header? As your chart did not show the prominent dip compared to the others?

Yes, he was the only one with a header.

[swift996]

Has anyone contacted the shop about the electronic files?

Also - I thought it was a great set-up for what we did. I'd be down to go again in a few months. We need to find someone willing to loan us a stock one for a baseline.

[xjohnx]

Originally Posted by vtmike

I'll clean the maf. I removed the large resonator that attaches to the box. I'm wondering if that could be the culprit.

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Just cleaned mine on my lunch break. The idle seems a lot smoother, and power seems to be up a little bit as well. Definitely worth giving it a try. CRC MAF cleaner should be available at most auto part stores. I picked up a can at Pep Boys.

[vtmike]

Originally Posted by swift996

Has anyone contacted the shop about the electronic files?

Also - I thought it was a great set-up for what we did. I'd be down to go again in a few months. We need to find someone willing to loan us a stock one for a baseline.

I haven't contacted them yet. I'd be down for another day. Hopefully will have something new on the car before too long.

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[xjohnx]

I sent Kevin an email for my logs when I got home Saturday. I'm assuming he'll get them to me in the next couple days.

[OrbitalEllipses]

Originally Posted by xjohnx

CRC MAF cleaner should be available at most auto part stores. I picked up a can at Pep Boys.

Good stuff. Make it a habit to clean the MAF if you're using an oiled filter.

[Scalzo]

damnnn, mines raspy as hell , all catless

[wdninja]

Originally Posted by vtmike

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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I'll take factory freak

[swift996]

Did anyone ever get the files? I emailed Kevin but never got a response.