i was wondering, since our cars are so slow if it was worth it to do NA breathing/exhaust mods. my reasoning behind it would be to increase overall fuel efficiency since that too can use a lot of help.

I noticed a gain after I installed the composite Kinetix upper plenum. I went from around 18 mpg to 22mpg around town. But that might just be me.

you installed the melting box eh...don't let your car idle too long

The plenum and plenum spacers are the only mods that are proven to give gas milage increases. Generally when you are modding you are increasing HP which decreases fuel efficiency

Z-Tube and High Flow Air filter are probably the best bang-for-buck MPG increases you'll get... because overall they cost like 100 bucks combined.

Mine went up about 2 MPG consistently over about one year of driving and always keeping track of fuel economy on a weekly basis. I put in a plenum spacer too and that did very little, if anything to increase fuel economy further.

My best MPG on highway went from 23-25 to 26-28 after installing a full CAI and the Skunk2 5\8 Plenum spacer.

04.5 6MT, no other mods except window, VDC, doorlock module etc.

I dont give a **** about my miles per gallon! Lets smog up mother earth!

^ this guy must be loaded I try to get the best mpg except for when it comes time to aggressive driving / tracking

cool. when you say high flow filter do you mean a replacement k/n panel filter or an open element cone filter such as the pop charger or cai?there has been a ton of posts saying that open element cone filters don't do much for performance in our cars. now, i'm just looking for better mileage. they should go hand in hand.

I put a K&N drop-in filter in mine, but I'm taking it out and switching to an Amsoil EA Nanofiber filter once I put the car back on the road in Spring. I don't really recommend the K&N's because they let a ton of dirt in. I always do my own oil changes, and I've noticed that my oil got really really dirty when I switched to the K&N filters. K&N's let a lot of air through, but they also let a ton of dirt in.

Supposedly the Amsoil Nanofiber filters let almost as much(if not just as much) air in as the K&N's do, but they catch dirt particles that are up to 10 times smaller than those caught by K&N. Even if the Amsoil filters aren't quite 100% as efficient at air-flow as the K&N's, I'd be willing to sacrifice a tiny bit of that MPG gain and even 1 or 2 HP for the peace of mind in knowing that my new Amsoil EA Nanofiber Air Filter is doing such a great job catching dirt.

In all reality though.... most people seem to say that the Nanofiber filters yield nearly identicle economy and performance numbers as the K&N's. Believe it or not, the Amsoil filters are actually cheaper to buy too.

No, i just drive so much i have to get gas every other day no matter what...not cool!

wtf r u used to driving? a ferrari?

i was used to driving my 97 maxima gxe 5speed which i modded with normal NA bolt ons. it reached my best time of 14.05@98mph before i quit. that car definately felt more lively due to the lighter weight. it also carried 5 passengers, luggage and a surfboard on the roof. of course, it's not as "baller" as the G's good looks. i also have an S13 240sx coupe with an SR swap putting out 331whp last time it was tuned. that car probably weighs about 2,700lbs with a rollcage and widebody. now that car definately feels "quick" almost violent going in a straight line let alone drifting. the G is a nice coupe, but definately not an overachiever like some other nissans. i remain loyal to the VQ engine. i'm still a believer. it's just spending big money on NA mods and still not catching up to the likes of mustang GTs or M3s is a bit discouraging. the only breathing mod that seems worth saving/spending on is a pair of twin turbos or something made by subaru or mitsubishi. and if it's refinement you're looking for, any given '05 bmw 3series will offer superior fit and finish. heck even the windshield defroster is overengineered. this car feels like an "in between" car. maybe i'll snap out of it tomorrow as my G35 still looks damn sexy.

"it's just spending big money on NA mods and still not catching up to the likes of mustang GTs or M3s is a bit discouraging"
Dude i beat gt's and im bone stock. The only ones that i havent raced are the 05/06 model GT. But the 99-04 Gt as long as they are stock and you can drive your car should lose to you.

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