Gernby

The IP manifold looks like it has even less internal volume than the stock manifold.

Gernby

BTW, the dyno test looks pretty invalid, since the baseline is clearly using the stock tune (or stock equivalent with VTEC at 6K).

fatjoe10

I find the comparison with the stock tune more interesting since it lets me compare how the whole package improves the OEM setup and not just the manifold alone. I'd love to see how this manifold with cams and EMS performs.

wadzii

are we looking at the same pics?

the plenum on the IP manifold is probably 3x the size of the stock manifold

Gernby

It may be interesting, but it's not helpful or relevant. The before / after dyno they posted doesn't even seem to show the kind of gains that would be expected from a decent tune alone. If we are to assume that they did a good job tuning it, then I guess we need to assume that their IM actually HURT performance.

wadzii

yep... the ONLY area where it looks like the IP manifold would help is past the hp peak

Gernby

I don't know which pics you are looking at, so I can't really give an answer. Maybe it is bigger, but it's hard to tell. After looking at it again, it looks like the runners are much shorter than stock. Maybe I need to go look at my stock IM again.

ap1_tot

isn't longer runners= better? am i right? I hope we find someone N/A wit a personal over the IP manifold. REALLY interested wit this mod for N/A.

wadzii

longer runners generally make power lower in the rpm's, shorter in the higher rpms.

from what i can tell the stock runner length is pretty good for most NA applications

fatjoe10

Is there a dyno of a sock car with just an EMS available anywhere? That could help us see a better comparison.

I may be wrong, but I tend to believe that doing single part comparisons don't provide much information. I believe that these sort of parts make better gains when used together and tuned properly, than a single item without other support. Some of this stuff will show losses if untuned/not properly supported. I like looking at the whole picture IMO.