Quote Originally Posted by Suntzu View Post
Ok,

I have overlaid mine and EUR003ACT dynos. Same dyno as we know, very different mods. I did this by hand but is very close. Im doing this analysis to determine the best mod for me next. I prefer to deal in facts than approximations and seat of the old butt. This as as close a dyno result you can get, Similar cars, similar temps, same dyno, same configuration on dyno:


snip
Im about to order the RBC intake manifold. My question is:

Given I have the Jtune Mild flash, which leans the car out a bit, you can see how flat my A/F is in th above graph versus justins with a stock tune, and given I have a 5000rpm vtec point...

..Do you think the RBC might make my car a bit lean? I mean it does richen up a bit at 6000rpm due to the reflash, and justins really starts to lean off, so im hoping i got plenty of safe room for any extra leaness that the RBC should deliver.

It looks like Jtune have removed the leaness spike at 6000rpm and made it stable. Im hoping this will be an avantge when i install the RBC.

Any comments engine gurus?