Has anyone just done nothing but this simple test on the dyno? To see gains and loss's?

We did a Euro R swap recently dyno'd it, compared it to 2 previous JDM H22's same dyno, software, tuner and the results lead me to believe that for stock to mild build ups that the JDM H22A (secondary runners working) is a pretty decent manifold and will have more power on stock to mild builds. Torque is the bigger gain about 10 ft lbs torque more. It also appeared that the JDM H22A manifold has a bigger volume...

I just thought id see what you all think...

I would be curious to see the Euro R manifold vs the H22A one on a built engine with the secondaries working correctly

 

this has a little bit of dyno testing -

https://honda-tech.com/zerothread/2065401

 

Hmm... the 2 JDM H22's i dyno'd had about 10 ft lbs of more torque then the EURO R I couldn't imagine the EURO R manifold on a stock internal JDM H22 pick up more torque then a secondary runner H22 manifold...

 

my dyno testing has proven that a moded ( butterfly plate completly removed) stock h22 intake manifold makes more power than a stock h22 intake manifold and is on par with a euro r manifold.

 

The 2 JDM H22s we tested both had secondaries hooked wired to Vtec. They both put down to the wheels 166 ft lbs of torque and 168. The Euro R had 154. I obviously agree that on a more built engine that the Euro R will have some gains. However it's just hard for me to believe on a stock JDM H22 just by only swapping a manifold to the Euro R you will gain torque too? stock H22 manifold with secondaries far as I know has proven to have more torque and the secondaries to me seem to be the helper with the torque and seems like it's common sense that it would with it's design.

 

we've dynod a stock JDM h22a in a Stock JDM cd6 accord SIR
with IHE euro R mani to be 4wkw less than stock Euro R with IHE

134wkw was the end result and the Euro R with 138

no tuning at all