Installe Joe Z Intake...pics inside
#16
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Originally Posted by monkeyfarm
All this is is a replacement tube connecting the airbox to the manifold.
While there's a SLIM possibility that it would make more power (and that increase is going to be so small as to fall within a margin of error for the dyno that I don't think it's even relevant), I really doubt it's going to do anything as far as sound goes either. Until someone goes and buys a decibel meter at radio shack and takes some before and after readings on the same stretch of road, I just don't buy it. Intake charge noise is almost all generated by the airflow through the filter. With all the stock plumbing in place, there's not going to be a change in volume, though perhaps in tone.
While there's a SLIM possibility that it would make more power (and that increase is going to be so small as to fall within a margin of error for the dyno that I don't think it's even relevant), I really doubt it's going to do anything as far as sound goes either. Until someone goes and buys a decibel meter at radio shack and takes some before and after readings on the same stretch of road, I just don't buy it. Intake charge noise is almost all generated by the airflow through the filter. With all the stock plumbing in place, there's not going to be a change in volume, though perhaps in tone.
https://www.clublexus.com/forums/sho...ght=joe+intake
imagine a large volume of air flowing in this, flow rates are definately affected:
#17
The only benefit I can see the tube adding, and it's a small one, is the fact that it's smooth. Airflow will be more uniform in the metal tube vs. the factory rubber tube because of the flexible ridges. Those ridges will create turbulence.
#18
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Originally Posted by conekiller
The only benefit I can see the tube adding, and it's a small one, is the fact that it's smooth. Airflow will be more uniform in the metal tube vs. the factory rubber tube because of the flexible ridges. Those ridges will create turbulence.
Now this needs to be combined with a K&N drop in which I believe is not out yet
Yea the engine looks nasty without the cover, during design knowing they will have a cover they can make the engine whatever way they want since it will be covered up anyways. Couldnt do that before, used a lot of time and reseources laying out the engine bay to make it look nicer
Last edited by 4TehNguyen; 05-12-06 at 05:54 AM.
#19
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Yeah the photo of the inside of the stock tubing that 4TehNguyen posted is the one I took. I also took this photo of the inside of the JOEZ piping.
It basically takes the stock design with regards to utilizing the stock cold air induction method and gets rid of the sound resonator and smoothes out the airflow for more air, which equals more power. Gains are around 4 peak hp and 4 peak ft/lbs, but should be making anywhere from 6-8 rwhp in the mid ranges.. based on the JOEZ dyno that he provided, but I'm doing my own independent dyno test this Saturday (tomorrow) and I'll see what kind of gains I got with just the intake pipe or as JOEZ calls it, the "Direct AirFlow Intake (D-AFI)" I'll post my results tomorrow.
It basically takes the stock design with regards to utilizing the stock cold air induction method and gets rid of the sound resonator and smoothes out the airflow for more air, which equals more power. Gains are around 4 peak hp and 4 peak ft/lbs, but should be making anywhere from 6-8 rwhp in the mid ranges.. based on the JOEZ dyno that he provided, but I'm doing my own independent dyno test this Saturday (tomorrow) and I'll see what kind of gains I got with just the intake pipe or as JOEZ calls it, the "Direct AirFlow Intake (D-AFI)" I'll post my results tomorrow.
Last edited by caymandive; 05-12-06 at 06:13 AM.
#21
Lexus Fanatic
Originally Posted by 4TehNguyen
would like to see high rpm gains, its obviously gaining more in the mid ranges, the ribbed design is going to hinder high rpm flow rates. Now if a K&N drop in came out, would be even more gains over an OEM paper element
#22
Originally Posted by chuckb
I'm speaking on my GS knowledge, but I believe oem filters are cotton, not paper. that's why K&N filters don't really do squat except risk the chance of getting oil on your MAF.
#23
11 Second Club
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Originally Posted by dominant1
Doesnt the factory airbox render your intake useless, due to its restrictiveness?
#25
Originally Posted by caymandive
Yeah the photo of the inside of the stock tubing that 4TehNguyen posted is the one I took. I also took this photo of the inside of the JOEZ piping.
It basically takes the stock design with regards to utilizing the stock cold air induction method and gets rid of the sound resonator and smoothes out the airflow for more air, which equals more power. Gains are around 4 peak hp and 4 peak ft/lbs, but should be making anywhere from 6-8 rwhp in the mid ranges.. based on the JOEZ dyno that he provided, but I'm doing my own independent dyno test this Saturday (tomorrow) and I'll see what kind of gains I got with just the intake pipe or as JOEZ calls it, the "Direct AirFlow Intake (D-AFI)" I'll post my results tomorrow.
It basically takes the stock design with regards to utilizing the stock cold air induction method and gets rid of the sound resonator and smoothes out the airflow for more air, which equals more power. Gains are around 4 peak hp and 4 peak ft/lbs, but should be making anywhere from 6-8 rwhp in the mid ranges.. based on the JOEZ dyno that he provided, but I'm doing my own independent dyno test this Saturday (tomorrow) and I'll see what kind of gains I got with just the intake pipe or as JOEZ calls it, the "Direct AirFlow Intake (D-AFI)" I'll post my results tomorrow.
I take back what I said about the noise. If the resonator is in the stock tube, then yes, it should definitely be a bit noisier with this intake.
#26
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Originally Posted by monkeyfarm
Aha! I was wondering what that was in the OEM tubing... it's the resonator. Usually it's buried down in the fender well, after routing the intake charge through all kinds of extra tubing to keep the noise down.
I take back what I said about the noise. If the resonator is in the stock tube, then yes, it should definitely be a bit noisier with this intake.
I take back what I said about the noise. If the resonator is in the stock tube, then yes, it should definitely be a bit noisier with this intake.
I would say the JOEZ intake is not noisy at all but a decibal or 2 higher than stock. Sounds very tasteful IMHO.
#27
Pole Position
Thread Starter
Originally Posted by caymandive
I would say the JOEZ intake is not noisy at all but a decibal or 2 higher than stock. Sounds very tasteful IMHO.
Same here, I like how it sounds. It has a deeper growl above 5K rpm. Below that, it is hard to tell the difference.
Sounds really sweet. I'll try to get some sound bites tomorrow.
Powerwise...hard to tell 5hp difference...what it is very noticeably is the throttle response, instantatneous.
#29
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Originally Posted by imaputz
the dyno graphs seem to show hp loss for anything under 5k rpm....
correct me if im wrong
correct me if im wrong
#30
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Originally Posted by caymandive
Ok, i'll correct you. Basically since ALL IS350's are automatic and you can't view the chart at anypoint below aprox 4850rpms because that seems to be the downshift point when floor it in 4th gear. So anything below aprox 4850 is just a semi throttle and means nothing on a dyno graph.