Throttle Body Spacer Review
#51
Originally Posted by App6MT
100% not trying to be a jerk
But if so many people (20?) have it, why is it that we have no idea where they came from? I don't believe in Christmas elves.
But if so many people (20?) have it, why is it that we have no idea where they came from? I don't believe in Christmas elves.
I am working on getting a hold of the manufacture to let you guys know how to go about getting one.
As soon as I have viable info for purchasing I will post... until then there isn’t anything I can do - and nothing is being withheld...
To the dyno questions... it has been dyno'd 4 or 5 times with various results... I don’t manufacture this thing so I'm not going to debate about its worth. My review here and my info on the other thread I linked in earlier post in addition to the other beta testers that have posted has enough information for any individual to decide for themselves whether they would be interested in this as well.
#52
#54
Originally Posted by spddmn124
you know.. http://www.alteredatmosphere.com sells throttle body spacer.. but its not "rifled".
#55
AAM's spacer is primarily for FI applications. It has a vacuum tap for items like the UTEC MAP sensor. That's why I got it.
As for the "turbulence inducing" TB spacers, I don't know if OCG35 is counting me as one of the 20 reviewers, but I used to have one pre-FI. The one thing that still intrigues me to this day is the change it caused in intake sound. I think we had a discussion about that a while back...without the spacer, my cone filter would only whistle around 4000 RPM. With the spacer, it whistled across almost the entire RPM range (1500+). No one could explain this. I think some of the skeptics said that there was no way it could be from the TB spacer (had to be something else, like my plenum spacer), but come on guys, that's one observation that's hard to argue with. A cone filter's whistle is directly related to airflow. If you install "part x", regardless of what it is, and the filter whistles with three times the pitch, it's not a stretch to hypothesize that part x somehow, some way increased airflow.
P.S. the one I had is for sale at amazon, and it's only $90. One bad thing is that it comes with hex head bolts, and it's extremely difficult to torque the bolt in the lower right part of the TB. I replaced that one with an allen head bolt (6 mm x 80 mm) from boltdepot:
http://www.boltdepot.com/product.asp...&cm=19&cd=1317
product # 6430
As for the "turbulence inducing" TB spacers, I don't know if OCG35 is counting me as one of the 20 reviewers, but I used to have one pre-FI. The one thing that still intrigues me to this day is the change it caused in intake sound. I think we had a discussion about that a while back...without the spacer, my cone filter would only whistle around 4000 RPM. With the spacer, it whistled across almost the entire RPM range (1500+). No one could explain this. I think some of the skeptics said that there was no way it could be from the TB spacer (had to be something else, like my plenum spacer), but come on guys, that's one observation that's hard to argue with. A cone filter's whistle is directly related to airflow. If you install "part x", regardless of what it is, and the filter whistles with three times the pitch, it's not a stretch to hypothesize that part x somehow, some way increased airflow.
P.S. the one I had is for sale at amazon, and it's only $90. One bad thing is that it comes with hex head bolts, and it's extremely difficult to torque the bolt in the lower right part of the TB. I replaced that one with an allen head bolt (6 mm x 80 mm) from boltdepot:
http://www.boltdepot.com/product.asp...&cm=19&cd=1317
product # 6430
#56
Originally Posted by aero
AAM's spacer is primarily for FI applications. It has a vacuum tap for items like the UTEC MAP sensor. That's why I got it.
As for the "turbulence inducing" TB spacers, I don't know if OCG35 is counting me as one of the 20 reviewers, but I used to have one pre-FI. The one thing that still intrigues me to this day is the change it caused in intake sound. I think we had a discussion about that a while back...without the spacer, my cone filter would only whistle around 4000 RPM. With the spacer, it whistled across almost the entire RPM range (1500+). No one could explain this. I think some of the skeptics said that there was no way it could be from the TB spacer (had to be something else, like my plenum spacer), but come on guys, that's one observation that's hard to argue with. A cone filter's whistle is directly related to airflow. If you install "part x", regardless of what it is, and the filter whistles with three times the pitch, it's not a stretch to hypothesize that part x somehow, some way increased airflow.
P.S. the one I had is for sale at amazon, and it's only $90. One bad thing is that it comes with hex head bolts, and it's extremely difficult to torque the bolt in the lower right part of the TB. I replaced that one with an allen head bolt (6 mm x 80 mm) from boltdepot:
http://www.boltdepot.com/product.asp...&cm=19&cd=1317
product # 6430
http://www.amazon.com/gp/product/B00...=unmatprice-20
As for the "turbulence inducing" TB spacers, I don't know if OCG35 is counting me as one of the 20 reviewers, but I used to have one pre-FI. The one thing that still intrigues me to this day is the change it caused in intake sound. I think we had a discussion about that a while back...without the spacer, my cone filter would only whistle around 4000 RPM. With the spacer, it whistled across almost the entire RPM range (1500+). No one could explain this. I think some of the skeptics said that there was no way it could be from the TB spacer (had to be something else, like my plenum spacer), but come on guys, that's one observation that's hard to argue with. A cone filter's whistle is directly related to airflow. If you install "part x", regardless of what it is, and the filter whistles with three times the pitch, it's not a stretch to hypothesize that part x somehow, some way increased airflow.
P.S. the one I had is for sale at amazon, and it's only $90. One bad thing is that it comes with hex head bolts, and it's extremely difficult to torque the bolt in the lower right part of the TB. I replaced that one with an allen head bolt (6 mm x 80 mm) from boltdepot:
http://www.boltdepot.com/product.asp...&cm=19&cd=1317
product # 6430
http://www.amazon.com/gp/product/B00...=unmatprice-20
#57
Originally Posted by DaveB
The whistle is caused be the open nature of the cone intake. The whistle, though faint, is there even with a Z-pipe. The noise is caused by the air rushing around the throttle blade under part-throttle conditions. My old Z28 and Maxima had the same whistles when I put intakes on them. Now why the whistle is more pronounced with the TB spacer would be a bit of a guess. My guess would be that the 1" spacer added behind the TB changes the low rpm flow chararacteristics within the intake manifold which then causes a change in the volume/pitch of the whistle. Is it adding power? The dynos don't seem to suggest so. Is it improving throttle response? Very possible. I know that when I added a CAI to my prior VQ30 Maxima, the throttle response and low/midrage power "felt" far better than with a POP intake or hacked OEM airbox. However, during testing at the track, the car was actually quite a bit slower with the CAI.
You do raise an interesting point though, that extra inch added to the intake tract, albeit small, does increase the volume of the intake system - the volume of the hollow part of the TB spacer is added to intake tract. Assuming all other variables are constant, pressure should slightly change too. Maybe that small change in volume/pressure is what causes the noise to change.
Something else interesting about the noise is that it occurred at low RPMs (i.e. 1500). If the TB spacer did have an effect on power/torque at those low RPMs, would that even be measurable by most dynos?
This is turning into a Ph.D. dissertation!
#58
Originally Posted by madchef
As I've said before, butt dynos are worthless.
You say the actual dyno's showed no improvements right? Soo.......
You say the actual dyno's showed no improvements right? Soo.......
#59
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Originally Posted by OCG35
Sorry, I forgot some of you that are interested might not be premiere member and can't access the GB area... below is the post in the group buy forum - if you are non-premier and are interested please sign up here and I will monitor the level of interest. If you are premiere please use the list in the actual group buy are. Thanks