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Sounds mega.
Aside from the itb's that come standard on an m3 (that are fed by one big airbox) I've never experienced itb's on a big engine. A mate had a saxo race car with a high compression engine build on itb's that was an absolute screamer. It may have had that stepped profile you're referring to but tbh I never noticed as it was always in a world of high revs and noise.
Tldr: when is the next lfgss ring trip?
Colm89-
Sounds mega.
Aside from the itb's that come standard on an m3 (that are fed by one big airbox) I've never experienced itb's on a big engine. A mate had a saxo race car with a high compression engine build on itb's that was an absolute screamer. It may have had that stepped profile you're referring to but tbh I never noticed as it was always in a world of high revs and noise.
Tldr: when is the next lfgss ring trip?
We're doing something similar to what BMW did with the M3 - feed the ITB's in a way that doesn't result in the sort of power delivery that this Porsche flat 6 has:
https://www.youtube.com/watch?v=nhMLvTSXidE
They show the dyno-chart in big at the end.
Dammit
We’re using (or, rather, re-using) some project work that the heads’n’cams guy did for Superbikes- variable intake tract depending on load and revs to ensure that we pull through the revs smoothly. ITB’s can have quite a stepped power profile otherwise as they hit and then leave the trumpets resonance points. Language not quite right there but hopefully you get the point!