NWP 75mm throttle body
#161
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Does it really matter if the test car is stock or not? As long as the comparison is done with only the TB being the difference then it's enough to make a judgement. This does look very promising though.
There was an article from 4 years plus ago about a bunch of different tuners modifying the 350z for Fuji Speedway (can't find the article right now) and one of them had the mines TB which is 2.5mm larger than stock. On the builder's blog they did do an isolated review of the TB and it did get some reasonable gains but not worth the price that mine's is asking for though.
http://www.ppi-mines.com/350Z.html
There was an article from 4 years plus ago about a bunch of different tuners modifying the 350z for Fuji Speedway (can't find the article right now) and one of them had the mines TB which is 2.5mm larger than stock. On the builder's blog they did do an isolated review of the TB and it did get some reasonable gains but not worth the price that mine's is asking for though.
http://www.ppi-mines.com/350Z.html
#164
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MY350Z.COM
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#165
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Tuesday I will have a before and after on the installation. It won't be same day or back to back but it will be the same engine package with the only change being the 75mm throttle body. The airflow has increased so much that the car is currently running lean enough in the midrange to hesitate. I will try to have a SAE corrected chart with a/f data of before and after. The plenum is an APS tall boy with the neck ported to match the adapter(almost 73mm). Pictures are on my build thread.
#166
hatersgonnahate
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For those who venture to make their own patch harness:
OEM 2003 TB connector:
W/R Pin 1 Throttle Position Sensor Power Supply
Y Pin 2 Throttle Position Sensor 2
SB Pin 3 Throttle Control Motor Close
G Pin 4 Throttle Position Sensor 1
L Pin 5 Throttle Position Sensor Ground
L/Y Pin 6 Throttle Control Motor Open
When looking into the connector with connector release tab at the top
3 2 1
6 5 4
Voltage Drop flying lead connector/TB pinout:
Pin 1 = red = signal 5v
Pin 2 = blue = signal 1
Pin 3 = orange = signal 2
Pin 4 = black = signal ground
Pin 5 = yellow = close output (more positive than pin6 closes the TB)
Pin 6 = green open output (more positive than pin5 opens the TB)
When looking into the connector with connector release tab at the top
1 2 3 4 5 6
If using the connector off the coil pack/cam pos sensor patch harness:
1 = yellow/red
2 = blue/red
3 = black/silver
4 = white/blue silver dots
5 = white/blue silver dots
6 = white/red
When looking into the connector with connector release tab at the top
1 2 3
4 5 6
Match cam pos/coil pack patch harness to VD.net Connector
1 yellow/red to red
2 blue/red to orange
3 black/silver to yellow
4 white/blue silver dots to blue
5 white/blue silver dots to black
6 white/red to Green
Final mating colors of OEM TB connector to VD.Net Connector
W/R Pin 1 to Pin 1 red
G Pin 4 to Pin 2 blue
Y Pin 2 to Pin 3 orange
L Pin 5 to Pin 4 black
L/Y Pin 6 to Pin 6 green
SB Pin 3 to Pin 5 yellow
OEM 2003 TB connector:
W/R Pin 1 Throttle Position Sensor Power Supply
Y Pin 2 Throttle Position Sensor 2
SB Pin 3 Throttle Control Motor Close
G Pin 4 Throttle Position Sensor 1
L Pin 5 Throttle Position Sensor Ground
L/Y Pin 6 Throttle Control Motor Open
When looking into the connector with connector release tab at the top
3 2 1
6 5 4
Voltage Drop flying lead connector/TB pinout:
Pin 1 = red = signal 5v
Pin 2 = blue = signal 1
Pin 3 = orange = signal 2
Pin 4 = black = signal ground
Pin 5 = yellow = close output (more positive than pin6 closes the TB)
Pin 6 = green open output (more positive than pin5 opens the TB)
When looking into the connector with connector release tab at the top
1 2 3 4 5 6
If using the connector off the coil pack/cam pos sensor patch harness:
1 = yellow/red
2 = blue/red
3 = black/silver
4 = white/blue silver dots
5 = white/blue silver dots
6 = white/red
When looking into the connector with connector release tab at the top
1 2 3
4 5 6
Match cam pos/coil pack patch harness to VD.net Connector
1 yellow/red to red
2 blue/red to orange
3 black/silver to yellow
4 white/blue silver dots to blue
5 white/blue silver dots to black
6 white/red to Green
Final mating colors of OEM TB connector to VD.Net Connector
W/R Pin 1 to Pin 1 red
G Pin 4 to Pin 2 blue
Y Pin 2 to Pin 3 orange
L Pin 5 to Pin 4 black
L/Y Pin 6 to Pin 6 green
SB Pin 3 to Pin 5 yellow
#167
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Been reading the throttlebody / harness causing hanging idle does the rev hang in the video seem normal or ?
View My Video
View My Video
#173
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I installed mine. Took about 30 minutes or less to install.
NOW, I am having the idle issue. 1200 RPM idle. Been doing the pedal dance and all 3 procedures in the instructions with no luck. I gave up after a couple of hours. Nothing seems to work. Pissed.
Also, the revs hang a bit after I release the throttle for a couple of seconds. No procedure seems to fix it.
No SES lights though.
NOW, I am having the idle issue. 1200 RPM idle. Been doing the pedal dance and all 3 procedures in the instructions with no luck. I gave up after a couple of hours. Nothing seems to work. Pissed.
Also, the revs hang a bit after I release the throttle for a couple of seconds. No procedure seems to fix it.
No SES lights though.
#175
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1cockyz : was the car tuned for improved air flow or just switching the throttle body and dyno it? you have mentioned that AFR went significantly lean.
Last edited by Patty; 08-28-2013 at 10:49 AM.
#177
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Do you (or anyone) not have a before/after dyno with just the part in question being the only change (same day, same dyno, same session, installed on the dyno, no tune, no other mods etc)?
#178
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#180
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I think the upper plenum sucks. So you can put whatever size throttle body you want on it and you will get small changes. It's awesome we have this upgrade available and its so easy to do but it doesn't fix what's right behind it. It seems the FWD vq manifolds are better than the upper plenum nissan put on their sports car. I've read about the maxima guys getting gains with a 4" intake but not Z cars. I would love to swap a Kinetix velocity manifold on this car with the throttle body in place but its out of my hands. Although the new owner of the engine is definitely very engaged about the car.