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Dyno differences with air filter and ecu mod

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YOUR RESEARCHDyno differences with air filter and ecu mod

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some of these differences you are seeing are related

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Suspected cause

I suspect some of these differences you are seeing are related to the individual cars, the different dynos and other factors that vary like gas octane, etc.

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Dyno differences with air filter and ecu mod
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Leading evidence: 'some of these differences you are seeing are related' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'some of these differences you are seeing are related' (1 discussions; 0 report identifying it and 1 suggest it). No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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1 matching discussions · 3 captured posts examined · 1 partial discussions

Reported and suspected causes (1)

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some of these differences you are seeing are related

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suspected cause

I suspect some of these differences you are seeing are related to the individual cars, the different dynos and other factors that vary like gas octane, etc.

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Dyno differences with air filter and ecu mod
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3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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POST 1Original post

Hi Everyone, I have been considering a new air filter and ecu mod, and have been looking at different dyno results. I am puzzled by the differences when you look at the charts. For example: (1) Cayman W shows a very large torque gain of about 45 at 3000 rpm http://www.planet-9.com/attachment.php?attachmentid=63&d=1161706252 (2) Orton shows a torque gain that looks closer to 10 at 3000 rpm http://www.ortonusa.com/porsche/caymansengine310.html (3) EVO shows virtually no torque gain at 3000 rpm, but in contrast shows a relatively large gain in HP at high RPM (13 HP), that is about twice as high as the max that Cayman W achieved. http://www.evoms.com/WebSiteUsers/evoadmin/Dynos/CaymanSDyno.jpg Does anyone have any thoughts on these differences? Are they perhaps due to alternative ways to do the ecu mod that trades off on high RPM vs. low RPM gains? Thanks much, Leo

POST 2Original post

First Kudos on doing the research with the items available here. I suspect some of these differences you are seeing are related to the individual cars, the different dynos and other factors that vary like gas octane, etc. I would consider that you are going to get an improvement (that was consistent across all charts) but that your improvement is going to fall within a "range" based on your individual factors.

POST 3Original post

That first graph indeed does have a huge gain at the low end of the mid-range. It's almost like there was a timing issue on the stock car. Or maybe a squirrel was burried in the airbox! The others have a pretty consistent level or torque at that rpm. Strange...

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