Ok, I got the VI installed....

Here is a quick list of everything ive used:
1)5th gen TB
2)5th gen EGR guid tube
3)4th gen IACV with adaptor plate from vsamylov
4)5th gen Fuel rails
5)5th gen injectors
6)5th gen Coil packs (only the rear set for now)
7)5th gen rear Valve cover
8)5th gen lower plenum as well as upper plenum (duh)

I pretty much got the car to start and STAY idling somewhat, but im having a problem with my idle. For some reason i am not able to adjust my idle up anymore than around 300-400 RPMs. I adjusted the TPS, as Impedance was set at around 490~ Ohms.

I have a few questions that may be attributing to my idling issues. For the people that have installed this, where did you mount your IACV (also how did you do it?). What size barb was used as well as what size vacume line did you run from this barb? I am using a smaller barb, big enough to run a standard (small) vacume line to the manifold. I am thinking this is the cause for my lack of vacum, but i want some feedback to help me trouble shoot this.

As far as the rest of the vacum lines that were ran into the VI manifold, i have been searching for good pics or discriptions of where everything was mounted, but im having problems figuring this out. Anyone have some close up pics of their vacum lines and where they installed them?

Also, where the h3ll did you guys mount THIS at?

(On the top left hand corner the brown thing, this was on my 4th gen IM, figured i needed to run this, but what the hell is it? and were did you guys mount it?)

I have ALOT more questions at this point, but these are the biggest issues i am having, and that i have tried searching for with no real helpfull findings.

I got it all done and now im stuck! any info will be GREATLY appreciated.

 

ask maxs to post pics of where he mounted his iacv. he put it where the abs goes.

 

I just left it ontop of the manifold cause i had no place to mount it to.

 

Mine is wedged in the mass of hoses and hardlines.

 

wow, looks to me like everyone basically attempted the same "ghetto-ness" of relocating all this crap...

Im really trying to clean up my whole setup, i dont feel comfortable leaving stuff hanging or wedged in unless its really secure.

For the mean time however, i mostly need help with the idling issue.

What size barb did you guys use on the relocating brackets for the IACV? I am using a 1/4" threaded adaptor with a outlet (vacume line connection) that is 3/8". Is this too small? im thinking this maybe attributing to the loss of vacume im getting.

Any ideas?

 

Oh and btw, i used new gaskets on the lower manifold as well as the upper plenum, i noticed some people were re using old ones and getting vacum leaks because of it...so im pretty sure that is not my problem...

 

That IACV hose looks way too small. are u sure that is a 3/8"? You want it to be the same size as the brake booster. I dont think that small tube you are using can supply enough air which might be causing ur low idle rpms.

as for as mounting stuff you really just have to be creative. Ive moved the EVAP solenoid (that brown thing in your picture) like 4 times now and still am not perfectly satisfied. The best place for me so far has been against the near the fire wall on the left side with a custom bracket to hold it in place (will try and post pic later).

and for the vaccum lines just be creative as well. I had the EVAP solenoid T'd off the brake booster nipple, the fpr and PCV were connected to the center two nipples, and everything else was blocked off.

 

Stephen Max mounts it on/near the Vias.

 

Hmm ok ok. Also i noticed that everyone seemed to have different lines that they used on the VIAS, as you can c i used the one on the right and pluged up the one on the left. Altho i have seen people do the opposite, whats up with that?

BTW, is the wiring for the RPM switch the same with the MEVI? I just got it in the mail a couple of hours ago and was gona install it after i got my idle fixed.

 

Whats the FPR? May sound stupid, but im not down the abrehvations..

Im pretty sure i know what it is

 

well which nipples on the VIAS you use depends on where you mount stuff. The only important thing is to make sure the opening is the right size. Alot of people (like me) also had certain nipples broken off when we recieved it so we had to work around it.

FPR is feul pressure regulator. On the 4th gen manifold its the small line next to the throttle body kinda pointed towards the driver side firewall.

 

Here's how I mount the IACV when I do 00vi installs. I use an L shaped bracket and bolt it to the VIAS.

 

Your idle speed may be low because the IACV isn't able to provide enough air through the 3/8" hose. What I had to do with at least one car was open up the throttle just a little bit with the throttle plate adjusting screw. That allows sufficient air for idling, and the IACV is able to modulate idle speed. You may have to readjust your TPS when you do this.

 

That's how I did mine and how I'll do 2 more for a couple friends' cars over the winter. It seems to be the neatest and best spot, especially if you have ABS. Plus, putting the IACV there doesn't require extending the wiring.

 

Thats a very neat and pretty install right there Stephen!

 

eh?
The nipple on the right is for swirl control valves and the one on the left is the VIAS actuator. Might wanna switch those

 

oops i meant the nipples that are towards the back of the 00vi for brake booster, EVAP, FPR, and PCV, etc... not the metal ones on the VIAS.

 

wow, thanks alot for your guys help! its really appreciated. I just realized that i got the barbed adaptor sizes mixed up haha. The threaded (non barbed side) was 3/8" and the barb adaptor side (vacume line side) was 1/4" haha. So i guess a lack of vacum from having too small/too LONG of a hose is what is causing the vacume loss...Seams like all you guys had similar problems...

BTW, stephenmax...I noticed you mounted that circular plastic thing to the top of the manifold near the TB, can you post a closer pic of how u did that? Also, for you that have mounted the EVAP solenoid back between the motor and the firewall, did you have an clearance issues after doing that? With stock motor mounts i can see my motor move around a bit, i can imagine that thing getting smashed into the firewall when the motor is shifting around....

 

I don't have any good pictures of that, sorry! From what I remember, I bolted that thingy to one of the bolt holes on the top of the 00vi.

 

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XeroX --> might want to switch though, unless you already have. Making the VI kinda pointless otherwise.

 

no clearance issues but its not really wedged in. its sort of hanging there above the back part of the manifold near the firewall so there is plenty of space there. That is where it is located in a stock 00-01 maxima. I am not sure if you have them but I think the best route is to use 00-01 brackets for EVAP Solenoid and EVAP Canister (that circular plastic thing). Since you have the entire 00-01 motor its quite likely you have those brackets. I was however able to reuse the 4th gen Throttle cable and EVAP Canister brackets by just finding a spot to screw them in on the 00vi that worked. Since the EVAP Solenoid on the 4th gen is mounted directly on the 4th gen manifold I had to be creative with that and made a custom bracket. Of course this is all useless without pics so I will try to have them up tonight after work.

 

i don't mean to steal the thread but how do u adjust the tps , i have not done that yet maybe that's why i get hesitation below 2600 rpm

 

I dont think you will notice too many problems with drivablility regarding a TPS thats not properly adjusted. I think you notice more symptoms of that when you FIRST start your car, someone correct me if im wrong.

BTW, this is all explained in the 4th gen stickies....

 

Not really, I had mine installed wrong and the car would start & idle like a champ but I couldn't rev it past 3k. Had me scratching my head for a day or so.

 

a bad tps setting can make your car's rev limit set to 2000, like a blown maf. haynes manual has a great tutorial on adjuting tps.