Stillen Air to Air setup

JWillis72

Mine acted a lot like that, it's been a while so I don't remember the timing. It would be normal when I stopped at a light for a few seconds then jump up for a few seconds and then back to normal. It would do that a few time then start shaking when it dropped, because my car is a 7AT I would shift out of gear and rev it and it would all start over. It never stalled on me but I took it to the shop the next day and they found the leak.

swiss370Z

Hey TopgunZ

Look even at this part:

The small tube leading from the plenum to the BOV.
If the hose is detached or broken, then it may lead to this behavior.

My thought...

Greetings
Ivo

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TopgunZ

****...I think its the manifold then.

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Z&I

I also had a problem similar to this with unstable idle and erratic throttle response.
Limped it to the dealers and they recalibrated the TB's.
That did the trick.

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Z&I

Found these two examples/references to Idle Relearn on some other Nissan Sites ... probably applies to the Z as well.

The first example is a shortened techique and I think the guy got lucky.
The second is a bit more involved - that's why I took mine down to the dealer to have it done.
This all happened some time after the Stillen Kit was initially installed and the 'Tuner' tried to fix it but never got it right.


From other Nissan Forums:Hope this helps


Idle relearn after unplugging throttle body


I cleaned a throttle body on 2005 Altima 2.5 and when I started the car it was idling very fast. Between 1000rpm and 1500rpm. It was actually jumping from 1000 to 1500 constantly when in park. I tried the procedure listed in service procedure several times but it did not work. I read in the forum to change the procedure just a little bit. Here is the procedure that worked for me.
warm up engine to normal operating temp.
turn off all equipment such as defrosters, a/c radio etc
1. turn key switch off for 10 seconds
2. insure accelerator pedal is fully released turn ignition switch on for 3 sec.
3. with ignition still on depress accelerator fully 5 times within 5 seconds
4. wait 7 seconds then fully depress accelerator for approx 20 sec or until the
MIL or service engine soon light stops blinking and turns on.
5. release the accelerator within seconds after service engine soon light comes
on.
6. start engine within the mentioned 3 seconds.. I did it as soon as service
engine soon light came of solid. and the idle dropped to about 700 rpms
in park. Drove around block all well so far. stopped and started engine
and relearned was maintained.

NOTE: Service Engine Soon light must be off and all faults cleared before this
procedure works. Gene Mayberry



MORE DETAILED
Well, Nissan has now totally taken away the ability to adjust idle speed. Aside from making sure that ignition timing is correctly (which really is not adjustable except for a very small amount), the idle speed is programmed into the ECU, is not adjustable, and can only be reset by performing the idle-air relearn procedure. Of course, the idle-air relearn simply allows the ECU to re-discover if the target idle rpm is incorrect, allows it to readjust.

It CAN be done without the Consult, but is MUCH easier for the dealer by using the Consult.

Without the consult:

Perform accelerator released position relearn by NOT depressing the accelerator pedal at all:

1) Turn ignition on for at least 2 seconds.
2) Turn ignition off for at least 10 seconds.
3) Turn ignition on for at least 2 seconds
4) Turn ignition off for at least 10 seconds.

Perform throttle closed position relearn by:

1) Turn ignition on for at least 2 seconds.
2) Turn ignition off for at least 2 seconds.

THEN you can perform the idle-air relearn procedure:

1.PRECONDITIONING
Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
• Battery voltage: More than 12.9V (At idle)
• Engine coolant temperature: 70 - 100°C (158 - 212°F)
• PNP switch: ON (in PARK or NEUTRAL)
• Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is
started the headlamp will not be illuminated.
• Steering wheel: Neutral (Straight-ahead position)
• Vehicle speed: Stopped
• Transmission: Warmed-up

• Without CONSULT-III: Drive vehicle for 10 minutes.
- M/T models
• Drive vehicle for 10 minutes.

Without CONSULT-III
NOTE:
• It is better to count the time accurately with a clock.
• It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has
a malfunction.
3. Start engine and warm it up to normal operating temperature.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
6. Repeat the following procedure quickly five times within 5 seconds.
- Fully depress the accelerator pedal.
- Fully release the accelerator pedal.
7. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops
blinking and turned ON.
8. Fully release the accelerator pedal within 3 seconds after the MIL turned ON.
9. Start engine and let it idle.
10. Wait 20 seconds.

Idle speed CVT: 600 ± 50 rpm (in P or N position)
M/T: 600 ± 50 rpm (in Neutral position)
Ignition timing CVT: 12 ± 5° BTDC (in P or N position)
M/T: 12 ± 5° BTDC (in Neutral position)

Entering the ECU into the idle-air relearn follows the same procedure as pulling fault codes from the ECU, except once the CEL starts flashing, just keep the pedal to the floor. Once it stops flashing and turns solid, let off the pedal and start the engine.

Hope this helps,
Trav

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Z&I

Another link to download a PDF for the 2012 370z
http://www.vouma.com/how-to-relearn-...ssan-370z.html

And another interesting conversation from the UK 350z site
http://www.350z-uk.com/topic/78535-i...at-does-it-do/

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TopgunZ

Thanks for the info. I did try the throttle reset..however I did already have a cel. So I will try it again after I delete that.

Another issue is that I am idling now at 10in/hg. Isn't it supposed to be 17? This is why I think its vacuum leak related. Did anyone else notice such low vacuum when you seen this issue?

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EVOHUNTER

Hey topz, I think your high idle is causing the Hg to lower. When I rev my car to 1200-1250 rpm, my hg is 9-11 hg.

hope this helps

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JWillis72

Top, are you still tuning this weekend?


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TopgunZ

Just got it running great! Took it all off and put it back on. Not sure what it was but I'm ready to dyno tomorrow!! Stay tuned....

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Z&I

Awesome ... !!!
Looking to hear that magic '500' number !!!

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EVOHUNTER

What did you figure out with you BPV springs?

Which one did you end up using?

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TopgunZ

Blue spring. It's loaded on the dyno. Just waiting for the tuned to get here.

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JWillis72

Good luck!


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StillenZ84

Good luck man!

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