SoonerFan

iTrader: (5)

i did move it.
i was under the impression that it wouldnt be an issue if it was uplugged. i thought that when i plugged it back it and it got power...it wouldnt know that i had moved it.

so now what do i do? it isnt bad enough to bug me...but will it f up other stuff?

Epacy

iTrader: (6)

Well, I did the re-learn procedure many times and it didn't work. My rpm's would spike and jump and froth around for no reason.
The only thing that cleared it up was when I got my ECU flashed for my new MAF. No kidding.

SoonerFan

iTrader: (5)

found this...http://forums.maxima.org/showthread....ight=high+idle

may have to try that. im going to get the code read tomorrow

Epacy

iTrader: (6)

Good find. Seems to jive with my experience.

Epacy

iTrader: (6)

We need to post in the sitckies or on the front page to NEVER EVER clean the TB under any circumstance.

Aaron92SE

iTrader: (128)

Don't let the thin spacer fool you! I was VERY surprised that the LIM temps decreased by over 30 degrees!!! I figured I'd only see a 15-20 degree temp drop since the LIM were so thin. But the LIM itself was 30 degrees lower on average! The LIM spacer REALLY helps a LOT!

With the entire kit installed, the UIM shows temp decreases of over 40 degrees on average.

The test vehicle (Blackmaxx96) only has intake and catback. That's it. He did not have headers or VAFC. He didn't even have a Ypipe.

If this is such an important issue, I can add this to my instructions not to clean or touch the TB.

If anybody else has any problems such as this, please post them here.

Theyears02

as far as TB cleaning is concerned (sorry to go OT) isnt it ok to use a spray and maybe a q-tip as long as you dont move the butterfly valve?

Aaron92SE

iTrader: (128)

I can't comment on this. I have never tested this on the VQ35. But, the discusson I've read on the org has shown that cleaning the TB is generally a bad thing. I don't know exactly what causes the problems.

But I would recommend NOT to clean the TB at ALL.

machinehead131

iTrader: (1)

Would you expect higher numbers with headers back?

The Law

iTrader: (39)

Got these done about 2 hours ago. Had some trouble with a bolt or 2. Everything is running fine, did both the accelerator pedal and throttle valve learing procedure.

machinehead131

iTrader: (1)

Let us know your thoughts on them.

The Law

iTrader: (39)

I'll post up my review tomorrow after I get a chance to let everything settle over night.

dizmax96

iTrader: (2)

im guessing you should be able to pick up more hp from safc/vafc tuning after the spacers are installed. headers should definitely pick the numbers as well. hopefully when i get the spacers on ill be able to install a safc and get dyno tuned and post numbers.

SoonerFan

iTrader: (5)

well after doing some research, it looks like the idle problem isnt actually caused by moving the valve...its caused by the TB actually being clean (which throws off the stored parameters in the ECU)

i would recommend that people leave it alone.

Aaron92SE

iTrader: (128)

The spacers do not effect AFR at all. No tuning is needed.

If you had a 100% stock Maxima, then yes, tuning fuel will help performance since it comes a little rich from the factory. So, tuning will always help the Maxima.

But your AFR is not changed by installing these spacers. I didn't know if that is what you were saying. But if not, I just wanted to make that clear to other readers.

You mean, if the test vehicle had headers and Ypipe, would I expect the spacers to help more than what they did on a near stock exhaust? No I don't. Regardless of your modifications, the spacers are proven to help on the Maxima with the stock intake manifold. The only thing that could noticably change the power gains is if you had a new intake manifold design. I have not dyno tested these spacers on the Kinetix IM. I know there's a gain, I just don't know how much with a custom IM.

But all you're doing is decreasing IM temps, which helps in ANY application regardless if you have a full exhaust, open headers, CAI, turbocharger, etc. The spacers also increase the runner length, which definitely helps with the stock IM design. And they also smooth out airflow since you are removing the stock gaskets, which are NOT port matched. So, with these spacers, you get a smoother transistion from surface to surface, which will help with ANY application.

Epacy

iTrader: (6)

Not 100% on that. Because I only cleaned my TB from the front, by moving the valve up so I could clean some in there. Which means I didn't get very deep past the valve. I cleaned the TB while it was still attached to everything.
So I barely cleaned it and doubt it really affected the monitoring. The damage is done when manually moving the valve. Don't EVA touch it.

SoonerFan

iTrader: (5)

http://www.nissanclub.com/forums/200...-expected.html

Puppetmaster

iTrader: (48)

Agreed. Any effect, if at all, would be insignificant at best, IMO. But the only is to know for sure is to see a dyno or datalog from a wideband with these on.

Agreed. I think many are missing the point that these are primarily phenolic spacers that deal with temperature, not plenum spacers dealing with airflow.

Thanks for the clarification, Aaron.

spiromax

I disconnected and removed my TB to clean it. I was very careful with it the whole time. I reinstalled it and hooked everything back up.

I had idle issues. High idle, surging rpms, SES, etc. This was several months ago. I tried all the reset/relearn procedures in the stickies. Nothing helped. I had to get my TB replaced. There's a thread on here where I go into detail about it... but I don't feel like digging it up, because it depresses me to think about all the money I blew on replacing my TB just because I tried to clean the damn thing.

dizmax96

iTrader: (2)

i Know that the afr is unchanged. i figured that if the afr is tuned with an safc you would be able to smoothen out the afr and lean out the richening that the ecu does. i was reading somewhere that pretty stock maximas with just intakes made around 10 Hp with an safc and tuning. so i figured that the spacers and safc should make nice numbers

machinehead131

iTrader: (1)

The spacers do not effect AFR. So your not going to get more power than what you already will get.

Epacy

iTrader: (6)

ummmm, yeah, I would be to because you didn't have to replace it

opanick

iTrader: (1)

so when I do the spacers this weekend, absolutely do not clean the TB??????

Aaron92SE

iTrader: (128)

That's correct! Do not even wipe the inside of the TB! Be very careful with handling the TB when it's off the motor. I will make sure this is specified in my instructions.

SoonerFan

iTrader: (5)

it will be dirty as hell...resist the common sense urge to clean it

The Law

iTrader: (39)

My review:

Before I installed the spacers, I had touched the UIM and man did it burn my hand and I had only drove it for like 15 minutes which was leaving school and coming back home.

After I installed it and took it for the drive last night. You really can't feel much of the gains but it feels like I gained a little of my low end back as well as throughout the RMP range. Also the tone of the exhaust as well as the tone of the intake did change a bit in which case I like since my frakencar exhaust was a bit quite but now I can hear it a bit more. Today, I did the same 15 minute driving from school and back home and wow...the spacers dropped the temperture by quiet a bit and I could actually put my hand on the UIM and not get burned by it. The UIM was actually hot to the touch but didn't burn like the first time I tried touching it without the spacers installed. All in all this was well worth the money. Thanks Aaron.

Also I will post up before and after sound clips as well.

Aaron92SE

iTrader: (128)

You might find that the manifold surface temps are dependant on how much idling and slow city traffic you do. It's also very dependant on the ambient temp.

The more idling and slow city driving you do, the hotter your IM will get. The more highway cruising, the cooler it will get.

Regardless of what kind of driving you are doing, you will see consistant temp decreases of 40 degrees or more. But it's very hard to get a consistant reading unless you conduct a before and after test like I did and do the same thing before and after in the same exact amount of time. The IM temps vary a LOT from day to day. It mostly depends on the kind of driving you are doing.

Without these spacer, it's very possible to have your IM cool to the touch if you cruise on the highway for 20 minutes on a cool day and instantly pull over a touch the manifold. But if you do any kind of city driving or driving slow around the pits at the track, your IM will get the hottest it ever will regardless of ambient temperature.

SoonerFan

iTrader: (5)

im glad you gave me confirmation since thats exactly what my impressions where. especially the exhaust tone.

The Law

iTrader: (39)

Here are the videos. The after video might be a bit louder due to the fact that I got a little closer than I should have.


Before spacers:

http://www.youtube.com/watch?v=I6X3DK5LoDU



After spacers:

http://www.youtube.com/watch?v=o9JmSYuoR9I


I'll get a better video of the after from a little farther distant next time.

xx-Marshall-xx

iTrader: (15)

"Verrry niiiice, How much?"

thats great, look whos tryin to be like who now...

5th to 3rd

The Law

iTrader: (39)

Who are you talking to?

The Law

iTrader: (39)

I hate that stupid SES light that is on. I need to borrow a friends OBDII scanner and remove that pos!

SoonerFan

iTrader: (5)

you got it too?
the idle system code (0507)?

The Law

iTrader: (39)

I don't know what code it is, but I don't have an idling problem tho.

SoonerFan

iTrader: (5)

you sure?
i didnt notice mine at first.
i would check the code

nismopc

iTrader: (3)

When I cleaned my TB, my only alternative was to go to dealer and have them set it up on the CONSULT. I was unable to do it myself after several attempts.

About 45 mins later and a couple $'s I was set.

SoonerFan

iTrader: (5)

the learning procedure that you do yourself is for the actual throttle position (stored in the TB).
that isnt the problem in these cases.
my TB knows its where its supposed to be. the problem is that that value doesnt match the value stored in the ECU. thats because the ECU has a value from when it was dirty. now thats its clean, the ECU thinks the idle is wrong so it increases it.
only a CONSULT can fix that problem.
going to get mine done on mon

SoonerFan

iTrader: (5)

Aaron,
Sorry this thread became about the idle problem. I just wanted to warn people from making the mistake I did and somehow blaming the spacers.
Jason

The Law

iTrader: (39)

The thing is that I've let the car idle and it idled just fine. Maybe I'm tripping or something.

Epacy

iTrader: (6)

Still not sold on the clean TB being the issue more than the valve being moved. Does the TB take it measurment at the valve? If so, that is before it reaches the dirt part of the TB. Additionally, the TB is constantly getting more and more dirty over time.
All that coupled with what I said earlier about mine barely being cleaned at all, still has me leaning towards the movement of the valve.