Rev-up Airbox or JWT Popcharger?
 

Hello,

I have the DE engine on my 04 coupe. If a Z-tube were on both set-ups...which one would yield better performance gains? Thanks for your opinions.

djhiro, in the real world there are no gains from any intake only a sound change. Manufactures will make all kinds of claims but with our G35s they're not true. The Rev-up air box/K&N drop in filter is your best choice, Popchargers lose major HP due to their aluminum pipe design causing heat soak. (heated incoming air)
Gary

i whouldent even go with a k&n drop in to be honest. i and running the amsoil ea filter drop in. keeps your oil cleaner.

Hey guys thanks for the advice. I've got the rev-up airbox with z-tube combo. The reason I bought those two were mainly because your posts in the past Gary. I don't have the K/N filter, but I'm running an Amsoil one as now. Pretty pleased overall to say the least. Just wondering if there was any reason to change to a pop charger, but it sounds like there isn't. Will a K/N make that much of difference? Thanks.

no. ive had both and the only thing i can say about the k&n is dirty oil.

You should look into the Stillen intake.

I even feel heatsoak with my Stillen Intake -_-" in summer... Rev up is the way to go...

arc air box is like the stock air box if you think your ballin like that.

i recently made the switch from a pop charger to the rev-up box with k&n...after driving for a year with the pop charger it's really weird getting used to not having the extra sound but i got a lot of torque back without a doubt..never putting that crap on my car again

Personally, I don't think you could tell the difference from stock to either if you did a blind test, All a Ztube is good for is noise. If you just want to, I would go with the rev up box, it's a solid design and filters are much cheaper.

same here. its garbage.

Thanks for all the responses. It looks like I'm going stay with my rev-up airbox. When I had it installed, I put the rev-up airbox, z-tube, and motordyne 5/16 plenum spacer all in at the same time. So, the difference was definately noticeable. I know the plenum spacer was the major contributor to the change, but the sound was better with the airbox and the z-tube. If anyone has any other comments feel free to contribute. I was contemplating a K/N air filter, but it sounds like the Amsoil one I'm using is just as good. Thanks.

I think you have hit on the best combo for the money. Have fun with it.

time for art pipes :)

You've made some very good mod decisions kjhiro, I'm using AMSOIL products exclusively in SLICK from her cone filter thru the engine to the differential, you won't find better products....Gary