This is odd, so I removed my Z-tube and....
#16
Helmholtz resonator theory
http://www.dinamoto.it/DINAMOTO/on-l...suonatore.html
Take notice of the power curve with and without the Helmholtz resonator. That's pretty much what we saw with the Maxima's with and without the resonator in place.
http://www.dinamoto.it/DINAMOTO/on-l...suonatore.html
Take notice of the power curve with and without the Helmholtz resonator. That's pretty much what we saw with the Maxima's with and without the resonator in place.
#17
Also isn't the resonator used in in Dave's link very different than the one used on our G sedans? The one in the link is inline with the intake tract. Ours is one that's connected to the intake tract with an extra tube. The link shows two but the gif file only seems to use the inline one for their example.
#18
Joined: Aug 2003
Posts: 6,573
Likes: 72
From: Kansas City
Why don't some you swap back in the OEM intake tube and see what you think? It takes all of 10 minutes to do. Just make sure to drive around with the setup for at least a solid day before developing an opinion. Density altitude in Kansas City is hovering in the 3000' range and the car feels pretty dang strong, even fully loaded and about 8% down on power because of the air. I do miss the intake wail though. The car still is pretty healthy sounding, but it's not as in your face now.
BTW, I tried searching Maxima.org for info regarding the intake resonators and it's really thin. Something has happened to that site's search function and/or a lot of data was lost between 2002 and 2004. All my resonator searches end at 2002 and all the juicy stuff popped up in late 2002 through 2003.
BTW, I tried searching Maxima.org for info regarding the intake resonators and it's really thin. Something has happened to that site's search function and/or a lot of data was lost between 2002 and 2004. All my resonator searches end at 2002 and all the juicy stuff popped up in late 2002 through 2003.
Last edited by DaveB; 07-02-2009 at 05:31 PM.
#19
Why don't some you swap back in the OEM intake tube and see what you think? It takes all of 10 minutes to do. Just make sure to drive around with the setup for at least a solid day before developing an opinion. Density altitude in Kansas City is hovering in the 3000' range and the car feels pretty dang strong, even fully loaded and about 8% down on power because of the air. I do miss the intake wail though. The car still is pretty healthy sounding, but it's not as in your face now.
BTW, I tried searching Maxima.org for info regarding the intake resonators and it's really thin. Something has happened to that site's search function and/or a lot of data was lost between 2002 and 2004. All my resonator searches end at 2002 and all the juicy stuff popped up in late 2002 through 2003.
BTW, I tried searching Maxima.org for info regarding the intake resonators and it's really thin. Something has happened to that site's search function and/or a lot of data was lost between 2002 and 2004. All my resonator searches end at 2002 and all the juicy stuff popped up in late 2002 through 2003.
The G tube is very hard to install with a TBS. I just did a comparison of the rev-up box and a cone filter with velocity stack.
The best I could do with the cone filter was 14.4@98mph. The best with the rev-up box was 14.2@101.
The temp was pretty much the same all night. The night I did my 13.4 the temp was dropping.
With the cone filter for some reason my 60ft were all 2.1 with the rev-up box 2.2-2.3.
Well to the subject at hand this morning I removed my TBS and replaced the z with the g tube and for some reason the car pulls harder to me and is smoother as Dave has mentioned.
I guess the g-tube works better if your modded I guess. I know the z-tube was my 1st mod just like alot of us so we have no way of telling if it works better with other mods because we got rid of it.
I wish I had my tools last night.
Probably to test this is to have a modded G with a G-tube swap to a z-tube most modded Gs have z-tubes or something else.
I'm going to do a couple of g-tech runs on sunday night when it's cooler with both tubes.
#20
Why don't some you swap back in the OEM intake tube and see what you think? It takes all of 10 minutes to do. Just make sure to drive around with the setup for at least a solid day before developing an opinion. Density altitude in Kansas City is hovering in the 3000' range and the car feels pretty dang strong, even fully loaded and about 8% down on power because of the air. I do miss the intake wail though. The car still is pretty healthy sounding, but it's not as in your face now.
BTW, I tried searching Maxima.org for info regarding the intake resonators and it's really thin. Something has happened to that site's search function and/or a lot of data was lost between 2002 and 2004. All my resonator searches end at 2002 and all the juicy stuff popped up in late 2002 through 2003.
BTW, I tried searching Maxima.org for info regarding the intake resonators and it's really thin. Something has happened to that site's search function and/or a lot of data was lost between 2002 and 2004. All my resonator searches end at 2002 and all the juicy stuff popped up in late 2002 through 2003.
The G tube is very hard to install with a TBS. I just did a comparison of the rev-up box and a cone filter with velocity stack.
The best I could do with the cone filter was 14.4@98mph. The best with the rev-up box was 14.2@101.
The temp was pretty much the same all night. The night I did my 13.4 the temp was dropping.
With the cone filter for some reason my 60ft were all 2.1 with the rev-up box 2.2-2.3.
Well to the subject at hand this morning I removed my TBS and replaced the z with the g tube and for some reason the car pulls harder to me and is smoother as Dave has mentioned.
I guess the g-tube works better if your modded I guess. I know the z-tube was my 1st mod just like alot of us so we have no way of telling if it works better with other mods because we got rid of it.
I wish I had my tools last night.
Probably to test this is to have a modded G with a G-tube swap to a z-tube most modded Gs have z-tubes or something else.
I'm going to do a couple of g-tech runs on sunday night when it's cooler with both tubes.
#23
Joined: Aug 2003
Posts: 6,573
Likes: 72
From: Kansas City
It's been about 150 miles and I have to say I really like this setup. The power delivery from a 4000rpm punch in 2nd or 3rd is different than with the Z-tube. The power delivery is like a surge or power than keeps building and building, even though the induction noise is pretty subdued. With the Z-tube, the power delivery always seemed a little strained above 5500rpms. Maybe because of all the noise and resonance. Below 4000rpms, the induction noise sounds no different than with the z-tube.
#24
It's been about 150 miles and I have to say I really like this setup. The power delivery from a 4000rpm punch in 2nd or 3rd is different than with the Z-tube. The power delivery is like a surge or power than keeps building and building, even though the induction noise is pretty subdued. With the Z-tube, the power delivery always seemed a little strained above 5500rpms. Maybe because of all the noise and resonance. Below 4000rpms, the induction noise sounds no different than with the z-tube.
guess I'll give it a shot... and see what happens...
film at 11 bro!
#25
#26
Joined: Aug 2003
Posts: 6,573
Likes: 72
From: Kansas City
I don't reset the ECU for modifications. It's pretty quick to learn (about 10 to 40 miles).
#27
Former G35driver Vendor
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From: Los Angeles California
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mpugeda (05-21-2012)
#29
Joined: Aug 2003
Posts: 6,573
Likes: 72
From: Kansas City
Sweet! It's good to know that you've confirmed that the G-tube isn't deterimental to performance. I sure like the way the G-tube feels compared to the Z-tube. I'm not one to swear by butt dynos, but there is something different in the way power is at least initially delivered at part-throttle and WOT tip-in which is something you're not going to be to see on the dyno since you're running WOT from start to finish.