Just had a quick question concerning map pressures.. Looking over my datalogs i notice map pressure is at -3.6 at 3000 rpms wot, -4.0 at 5300, and -4.8 at 7600. Does this mean there is a intake restriction or maybe exhaust or normal? Car runs good and strong just curious about it.
Setup
F20b manual
Stock f20 tb
euro r intake mani
2.5" sri
ebay header w/2.5" custom exhaust
Hondata S300 p28

 

Also if anyone would be willing to look over my tune and give me any pointers, tips, suggestions, or advice just let me know.. TIA

 

What elevation are you at?
Read:http://en.wikipedia.org/wiki/Atmospheric_pressure

 

Thanks for the link. I do understand that its not gonna be 0 but was just curious as to why it rises(more vacum) with the raise in rpms. By the way im at 5000ft elevation.

 

Because its sucking harder with more rpm. Datalog a pull without an intake/filter to rule that out. 5,000ft is pretty high

 

Generally an increasing intake vacuum reading can show that your Throttle Body is too small.