Post by
Geride2003.0 »
https://forums.nicoclub.com/geride2003-0-u100753.html
Mon Jul 07, 2008 10:26 am
I own a 2003 G35 manual transmission. Custom Injen CAI (ram air and such), skunk2 plenum spacer, custom grounding kit.
So I purchased the display item at the 2005 nopi nationals in Georgia for about $120. I competed in the dyno contest that year and all following years with about 230 in 2005 and about 249.65whp in 2006; down to around 245 in 2007. The intake in 05 was just in short ram config. and I had a cheaper grounding kit installed. The changed for the next year was the Cold air section of the intake and a custom made grounding wire kit with a stinger negative battery terminal and 4 gauge wires. An increase by 8 to 12 whp should be a very good estimate and not some numbers I pulled out of my a$$.
I also experienced a increase in gas milage. If I had to estimate, I would say about 1 mpg, but that could be related to the increase in hp. I feel confident that I am burning more fuel when i get on the gas. :p
The spacer also works as a heat shield(sink, blocker? ). I drive without the engine cover, and I can rememmber not being able to put my hand on the plenum top after a good drive. After the Skunk2 spacer, the top would be cool enough where I could keep my hand on it for a lot longer. the top would get very hot after a few min of stand still. Keeping that intake air as dense as possible should be a big possitive for the powe hungry .
Only drawbacks include1) to be careful when installing. i would hate to think what would happen if one of the (i think 6) grommet like thinks were not in line and fell into the intake manifold. Also 2) Be careful when securing the bolts. I got a check engine light and it went away when i tightened the top bolts. Maybe only a max of half a turn for some of the bolts.3) You cannot install most front strut bars with this thing. It raises the top too high.
Otherwise, this product is awesome. I totally recommend it.