In my search for hfcs i came across this z1 plenum. http://www.z1motorsports.com/g37_370z/product_info.php?cPath=597_804&products_id=7267

Does anyone have this? I have read from people that work looked shoddy and rough where they ported it.

 

I have the M370. There was a thread trying to compare the two which ended in no conclusion.

The Z1 supposedly requires a tune, while in an M370 a tune is not required, but recommended for optimum performance and gains.

Anyway, as soon as the car is tuned you really can't separate which gains where a result of the manifold upgrade. Most people just go with the M370, since Z1 requires tuning, or at least that is what Z1 said. However, when I installed my M370 I also lost power, so I guess that both require a tune.

Also, note that the $295 cost is after you send them your OEM manifold first. If not, it is +$250.

Read these:

https://www.myg37.com/forums/engine-...-vs-stock.html

https://www.myg37.com/forums/engine-...lenum-mod.html

 

motordyne has one as well m370 but its more expensive

 

If its anything like their HFC I would steer clear.

 

I have it and love it just don't look for power above 7100, but the midrange is much more usable.