Hemco Upper

[Steve Wood]

could well be.  it should be there tomorrow but I never believe the PO anymore

[ttipe]

I updated my combo in my profile.

[ttipe]

Interesting stuff going on. There is a post on the "other board" I believe in the general section titled "interesting numbers". Richard Clark was flowing different intake manifold / plenum combos. They were using some science in their approach. They flowed a Hemco and it did very well. I don't know whether you venture over there or not but the results are very interesting, not conclusive but some ideas are coming to light. I'll chime in tomorrow with specifics that I thought after you have had an opportunity to see for yourself.   

[Steve Wood]

no, I never bother going over there

[Steve Wood]

Found them....looks like the PP does what it is supposed to and would be good on the average car.   The Hemco flows a bit more and also does a good job.  Given the upside on really fast cars, someone needs to start casting them again

More interesting to me was the upside potential of the intakes themselves-again for really fast cars

[ttipe]

There is a 9 cfm gap between 2 & 4. If I can reduce that gap by 4/5 cfm that will make my day (based on their testing). I asked if they flowed it with the egr tower in/out. If the tower was in that could fix my concern.   

[ttipe]

Hemco being gently worked. Lower being equalized. I did play around with all these findings from Richard Clark and #2 needs flow improvement. Do I believe my findings. No Way! Too much variability with the work of others. The proper way is to balance the manifolds (upper & lower ) as a system. Lots of data and long story. For building a pump gas only car equalizing the intake is definately a plus.   

[Steve Wood]

some times, one must find the answer and then create the theory

[earlbrown]

some times, one must find the answer and then create the theory

Sounds like you found hardcore religion! 

[Steve Wood]

I cannot argue against that