03-04 airbox vs 06 airbox
its painted... but I have an extra z-tube painted the same color so it wont look odd if you want to work something out... let me do some tests first, then we can figure something out.
Joined: Mar 2009
Posts: 18,299
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From: By the sea, Tx
G35 sedan w/ too much money in mods
FWIW… I haven’t had time to do any data logging, but I did run the OEM air box for a few days after the car got out of body shop and a 100 mile commute yesterday… I put the Stillen box on (for other reasons)… honestly I don’t think I will be going back to OEM.
I don’t doubt that temps will be moderately lower with the OEM box, but my butt dyno definitely likes the feel of the Stillen better. I suspect it’s the airflow that helps… low to mid range is much improved with Stillen. BTW, I’m now using a JWT filter with Stillen heat shield (I cant really tell the diff between JWT and Stillen filter)… the only reason I am running JWT is I haven’t had time to clean the Stillen filter after recent body work (it got real dusty/dirty and needs to be cleaned and re-oiled) + I’ve always wanted to try the JWT (never have until now).
I will still do a series of tests (later when I have time)… but I don’t plan to permanently use the OEM box - which is too bad, because the OEM fitment is much better and it actually looks better with my cover and snorkel because they are painted the same color (Stillen heat shield is pained a little different).
I’m not stating this to start a debate… its simply my opinion based on recent driving with both – take it or leave it, just don’t debate it… I’ll have “data facts” later, but regardless what they are I’m going to run the Stillen.
I don’t doubt that temps will be moderately lower with the OEM box, but my butt dyno definitely likes the feel of the Stillen better. I suspect it’s the airflow that helps… low to mid range is much improved with Stillen. BTW, I’m now using a JWT filter with Stillen heat shield (I cant really tell the diff between JWT and Stillen filter)… the only reason I am running JWT is I haven’t had time to clean the Stillen filter after recent body work (it got real dusty/dirty and needs to be cleaned and re-oiled) + I’ve always wanted to try the JWT (never have until now).
I will still do a series of tests (later when I have time)… but I don’t plan to permanently use the OEM box - which is too bad, because the OEM fitment is much better and it actually looks better with my cover and snorkel because they are painted the same color (Stillen heat shield is pained a little different).
I’m not stating this to start a debate… its simply my opinion based on recent driving with both – take it or leave it, just don’t debate it… I’ll have “data facts” later, but regardless what they are I’m going to run the Stillen.
I'm curious to try the Stillen, I know the shield has multiple places to induct hot air though. With the JWT I lost a LOT of throttle response and some low end grunt with the brutal heat we're having here. Have you not seen this with the Stillen, and why do you think that is?
Thanks for your input.
He has 3.7 gears. That extra torque multiplication can make the reduced throttle response feel a bit less significant.
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Joined: Jan 2010
Posts: 151
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From: Texas
well guys, I got the cover on Monday.. it looks very impressive as I had initially mentioned, received p/n# 16526-AC700 as confirmed in subsequent posts, from EverythingG35.. by way of Infiniti of Scottsdale for $93.36 shipped out the door.
My initial response once installed, is that it gives the engine a slightly deeper, throatier sound, coupled with an MD plenum spacer, Z-tube and AMSOIL Ea drop-in filter... it sounds very nice.. without the asthmatic Stillen "whine" at WOT.
The next change I noticed was an improvement on low end throttle response and torque. The engine seems stronger below 2700 RPM.. don't have numbers to back it up.. but my butt dyno definitely detects a more spirited acceleration from a stand still.. without having to mash the go pedal.. ya know?
Response in the other end of the spectrum feels about the same.. haven't pushed it though.. it's only been a couple of days so far.. not much time to "play" on that end of the power band.. over all though, it is definitely a minor tweak in the positive direction... it adds the overall "polish" to the state of the engine.. minor, but definitely a plus.. really smooths it out a bit as far as response goes.
As I get more time on the clock for this mod... I'll be interested as to see what kind of an impact it has on my overall gas mileage.. after installation of the AMSOIL Ea air filter I saw about a 4 MPG average increase in mileage.. so I'll see what it does for that parameter... "film at 11"
My initial response once installed, is that it gives the engine a slightly deeper, throatier sound, coupled with an MD plenum spacer, Z-tube and AMSOIL Ea drop-in filter... it sounds very nice.. without the asthmatic Stillen "whine" at WOT.
The next change I noticed was an improvement on low end throttle response and torque. The engine seems stronger below 2700 RPM.. don't have numbers to back it up.. but my butt dyno definitely detects a more spirited acceleration from a stand still.. without having to mash the go pedal.. ya know?
Response in the other end of the spectrum feels about the same.. haven't pushed it though.. it's only been a couple of days so far.. not much time to "play" on that end of the power band.. over all though, it is definitely a minor tweak in the positive direction... it adds the overall "polish" to the state of the engine.. minor, but definitely a plus.. really smooths it out a bit as far as response goes.
As I get more time on the clock for this mod... I'll be interested as to see what kind of an impact it has on my overall gas mileage.. after installation of the AMSOIL Ea air filter I saw about a 4 MPG average increase in mileage.. so I'll see what it does for that parameter... "film at 11"
That would be the Motordyne Plenum Spacer...
It opens up the plenum to get better air flow to the front cylinders, gives the engine a nice growl and when used with all the above mentioned intake mods, really opens up the power band and drivability of our G's
Go to the Motordyne site and check out the goods. The basic 5/16th's spacer is a good deal. This size is good for the low to mid rpm range.. where as the 1/2" is more for higher rpm power range.. i usually don't cruse a 5000 rpm.. so i went with the 5/16"... for day to day driving, as suggested by Tony (Hydrazine) from Motordyne
It opens up the plenum to get better air flow to the front cylinders, gives the engine a nice growl and when used with all the above mentioned intake mods, really opens up the power band and drivability of our G's
Go to the Motordyne site and check out the goods. The basic 5/16th's spacer is a good deal. This size is good for the low to mid rpm range.. where as the 1/2" is more for higher rpm power range.. i usually don't cruse a 5000 rpm.. so i went with the 5/16"... for day to day driving, as suggested by Tony (Hydrazine) from Motordyne
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Joined: Jan 2010
Posts: 151
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From: Texas
That would be the Motordyne Plenum Spacer...
It opens up the plenum to get better air flow to the front cylinders, gives the engine a nice growl and when used with all the above mentioned intake mods, really opens up the power band and drivability of our G's
Go to the Motordyne site and check out the goods. The basic 5/16th's spacer is a good deal. This size is good for the low to mid rpm range.. where as the 1/2" is more for higher rpm power range.. i usually don't cruse a 5000 rpm.. so i went with the 5/16"... for day to day driving, as suggested by Tony (Hydrazine) from Motordyne
It opens up the plenum to get better air flow to the front cylinders, gives the engine a nice growl and when used with all the above mentioned intake mods, really opens up the power band and drivability of our G's
Go to the Motordyne site and check out the goods. The basic 5/16th's spacer is a good deal. This size is good for the low to mid rpm range.. where as the 1/2" is more for higher rpm power range.. i usually don't cruse a 5000 rpm.. so i went with the 5/16"... for day to day driving, as suggested by Tony (Hydrazine) from Motordyne
yes, MD spacer kits are a cinch to install when you follow the instructions, they take approx 1.5 hours to install on your own.
those matched with the rev up air-box/ kn filter / z tube have been a super popular combo with many of our customers lately.
those matched with the rev up air-box/ kn filter / z tube have been a super popular combo with many of our customers lately.
As long as you like it, fvck everybody else. I tried a JWT for a month, hated it, and replaced it with the stock revup setup. A lot of people like the JWT and good for them.
I'm curious to try the Stillen, I know the shield has multiple places to induct hot air though. With the JWT I lost a LOT of throttle response and some low end grunt with the brutal heat we're having here. Have you not seen this with the Stillen, and why do you think that is?
Thanks for your input.
I'm curious to try the Stillen, I know the shield has multiple places to induct hot air though. With the JWT I lost a LOT of throttle response and some low end grunt with the brutal heat we're having here. Have you not seen this with the Stillen, and why do you think that is?
Thanks for your input.
Yes the stillen box has an open side to it towards the driver's side headlight. But that area is pretty much completely sealed off from the engine bay. But even then, it wouldn't be difficult to actually seal that part up
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