Umm. Hmmm Sure, why not?



The only thing I changed between the prototypes and the production spacers is how the TB spacer looks. I made the bottom of that spacer look identical to the top. So it will be a better looking TB spacer. But it's not symmetrical between the top and bottom. There is still only one way the spacer will properly match up.

 

any idea when the dyno charts will be up?

 

VERY soon! I have been working on compiling the data everyday since the testing was done last week. I am almost done. I will work into the night tonight to have the power gains and temperature reductions posted for everybody as soon as possible.

 

Looks good man, cant wait for the final results!

 

yummy! time is closing in.

 

Hey arron,

I was wondering, Would I be able to cut the spacer that goes between the elbow and the IM? Cause I have the SSIM which I cut the metal spacer. Would it be possible and would there be any problems?

 

awsome pics, im drewling.



I kind of hope these dont come out for another 2 weeks cause I just spent alot of money on new furniture.

 

That won't be a problem at all. These spacers can be ported also to match your intake runners if you have a custom IM or have custom port work.

I highly recommend wearing a face mask b/c of the very fine dust created by cutting or porting this material.

 

Alright cool. Thanks for the heads up.

When do you think the dyno numbers will be up?

 

As I said above... VERY soon. I am working on it as we speak.

 

so which pieces will actually need to be revised/modified to accomodate the EGR tube/valve on the 6th gens?

 

Since I have not designed the 6th gen kit yet, I can't say for sure. I believe the spacers will stay the same as the 5.5 gen kit. But most likely, a replacement EGR tube will have to be offered to accomodate the rise in the UIM.

 

Thank you everybody's patience! Since there was a LOT of data to compile and average out, it took me a little time to get every organized.

As was mentioned above, me and Blackmaxx96 met and installed the prototype spacer kit on his 2002 6spd Maxima. The fitment and testing went very smooth.

The first thing that was done is make sure Home Dyno will work on his car. After making some changes to my hardware, I got the dyno system working. So we proceeded to start the testing procedure. Both the before and after testing was done exactly the same to produce the most accurate results.

Each testing procedure consists of allowing the car to idle with hood closed for exactly 45 minutes while taking over 150 temperature measurements from the Heads, Lower and Upper Intake Manifold, Elbow, and the Throttle Body. This allows the car to get as heat soaked as possible before any dyno tests are done. This also allows enough time for all the manifold temperatures to level off and stop rising. Then we hop in the car and do the dyno runs. After those are complete, we come back and allow the car to run for an additional 15 minutes. This allows enough time for the temperatures to rise back up and level off again. During cruising speeds, the temperatures are greatly reduced due to the added airflow in the engine bay and radiator. So we allowed the car to idle after the dyno runs to record the temperatures after the motor has been put under racing conditions. We conducted this exact procedure before and after the installation of the Nissan Works Phenolic Intake Spacers during the same day and exact same weather conditions.

The results? Without spacers installed, the following average temp readings were recorded. Please note that these are the average temperatures after the engine temps have stopped rising and is as heat soaked as possible.

Temp Results without Spacers
Heads: 188.25*F
LIM: 176.4*F
UIM: 146.0*F
Elbow: 119.75*F
TB: 115.25*F

Temp Results WITH Spacers
Heads: 189.0*F
LIM: 144.8*F
UIM: 104.8*F
Elbow: 89.8*F
TB: 89.2*F

These spacers show over a 30 degree temp decrease in Lower Intake Manifold Temps and over a 40 degree temp decrease in Upper Intake Manifold Temps! The upper intake manifold is NOTICABLY cooler with these spacers installed!

Now for the dyno results:

These gains are not the gains you hear from most performance shops (they take the worst "before" dyno and the best "after" dyno to give you bogus power gains). With the dyno chart you see below, 6 dyno runs were logged in order to figure the average gains found at each 100rpm increment for HP and TQ.



Notice the huge gain in low end and midrange torque without sacrificing ANY top end power! Also, noticed the huge gain before AND after the VIAS release point. Between 3800 and 4600 rpm, there is a 5-10hp and 8-12ft-lb gain after the VIAS release point (which seems to be around 3800rpm). And below 3300rpm, there is a consistant 5-7ft-lb gain in torque not counting the initial spike you see below 2600rpm (17-28ft-lbs).

These spacers seem to really put out some decent consistant gains below 5K rpm!

 

Hell yeah!
That's with a bad coilpack, too!!!

 

Perhaps an even more viable option for those with a single stage IM.

That bad coil pack must not be that bad since you're sill obviously firing on all six.

Where do I sign?

 

Number one cylinder..
He could barely get a signal off of it, and i'm really starting to notice it drop off in power, and the idle is slowly getting worse and worse

 

Were you able to get ambient temps? How about IAT's?

 

Fortunately, your car ran fine during all our testing. But I clamped my inductive pickup for the dyno into the #6 coil pack and noticed a horrible signal with lots of noise. Then I tried the #2 coil pack and it was a clean signal! The #6 coil pack was obviously acting different than the others.

 

The weather conditions for the time frame the testing was done was:

Sunny
Ambient Temp: 59*F
Humidity: 27%
Barometric Pressure: 29.87

I was not able to record IATs. But there are several people on the org that can record that easily on the 5.5 gen.

 

#6.... wooops... yeah, that one!

Front driver side

 

I certainly plan on getting a set of your spacers and I will post before and after IAT's.

Although the IAT signal reading is taken from the MAF sensor, it's still should be cooler due to that 'area' of the engine being considerably cooler.


Also, to add to that cylinder coil noise issue, perhaps this may have played a role.

http://forums.maxima.org/showpost.ph...5&postcount=22

 

are you working on the 6th gen soon ?

 

great numbers, cant wait to pick up a set and do the single plane/ssim mod

 

GREAT NUMBERS!!!
very impressive.
send me a set

 

Great numbers ....good job Aaron ....Congrats for doing such a great job ... i think that we should all thank him for all the time and labor ..to devolpe such a great product ..!!!! again Congrats Aaron !!!

 

Aaron, really appreciate you following through with this. So glad to finally have a set available.
How involved was it to put the spacers on that go to the heads?

 

Aaron

Incredible quality.

Based on the temps and #'s I am seeing, would it be safe to say that we would see similiar results without installing the intake manifold spacers? Just installing the MAF and the upper and lower intake collectors?

Since some of us might not want to remove the intake mani, it would be nice to know what we might expect with a lesser kit when they become available.

 

Impressive numbers, sing me up too.

 

Yeah, the IATs might be slightly different with the spacers installed. If you are able to take IATs from inside the upper or lower IM, then I know they will be different.

The VE has the same coil pack design as the VQ35. My system needs a high voltage signal in order to get a clean run file. So I am not able to connect up to the wires on top of the coil pack. What I do is unplug the coil pack, attach and high voltage plug wire between the spark plug and the coil pack. Then I attach to that for a very clean signal.

Yes, I will be starting the 6th gen kit within the next couple weeks.

If you have the UIM already removed, the LIM is EASY to remove! Very easy! All you do is unbolt it form the heads and lift straight up with the fuel rail and everything still attached. There should be enough play in the fuel hose in order to lift it completely up and set it on the rear valve cover.

The lower IM spacer, as thin as they are, surprisely helped a LOT! I didn't expect to see a 30 degree temp drop in LIM temps alone! Lowering the LIM temps really help keep the UIM, Elbow, and TB cool to the touch.

I would not recommend going with anything other than the full kit. Those LIM spacers really do make a difference when you combine them with the rest of the kit. Keep in mind that removing the LIM is VERY easy! If you remove the UIM, the hard part is over b/c you had to worry about electrical connections and vacuum and breather hoses. But with the LIM, you just unbolt it and lift it straight up. There is no need to release the fuel pressure.

 

sweet numbers... im definitly in for a set!

 

Can't wait to purchase?

 

When can I send payment?

 

I'm in for a set!

 

Is the price still around 200 bones?

 

My car is taken apart waiting for this.

Actually I did my spark plug (now that ive taken all this apart, i can speak from experience - this kit will be easy to install)

 

I agree it will be an easy install since I had to take off my IM to replace it with the SSIM.

 

Waiting patiently to pay....lol

 

Me too......any word on the final prices?

 

Sooner, I don't see the LIM off. You doing that part I assume?

 

im gonna get the whole kit...i just didnt have the lower collector off since you dont need to remove it to change spark plugs