Cobb AccessPort for 370Z!

CCCLXXZ

Fair enough, the general consensus would point you to GRD (Genesis Racing Development) for tuning on a COBB for the Chicago area. On the Sentra, there is a built in pre-cat on the header, hence the increase in volume replacing it with an aftermarket solution.

Enjoy

bmarcinczyk14

yes, thats true about the built in pre-cat on the sentra, not only that but that pos pre-cat is know to break up and get sucked into the engine, so on the sentra not only is a header a performance mod, but also an reliablitiy one too. also on the sentra se-r's intake manifold, it has two sets of intake ports, 8 total, one set is open all the time and the other set is closed off with butterfly valves untill the engine hits 5500rpm, then the second set opens allowing more airflow through and also making the engine louder and deeper. why doesnt the vq engine have this design? i would think it would allow more power.

tranceformer

There's no need for it on the VQ37 because it has VVEL.

__________________
Ray
2009 370Z Base Sport 6MT / 12.860 @ 109.09mph / 1.921 60ft / street tires
official 1/4 mile track times

bmarcinczyk14

even with the older generation vq engines, which did not have vvel.

tranceformer

Nissan engineers probably didn't think it was necessary or found better ways to make more power.

__________________
Ray
2009 370Z Base Sport 6MT / 12.860 @ 109.09mph / 1.921 60ft / street tires
official 1/4 mile track times