Yes... another thread. Another subject.

Before anybody says something about my IM, this test was done with a vias deleted stock IM and other assorted boltons + tune.

You DO need tuning before you can use a LRMAF!!!!!

Green: LRMAF and 3.5" intake. Red: Stock maf and 3" intake. Both intakes are the exact same length, all other factors are equal. The LRMAF tune needs some work, the dip around 3500-4000RPMs is the result of a 11.8-11.9 rich spike.

 

nice. was considering having a 3.5 made, but thought it may be overkill. ..guess not...what length did you tune the intake to? 17 inch used to be the magic number if i remember correctly.

 

Including the elbow and TB, 31". That's to get a "boost" in the 5500-6k rpm area.

With just MAF/intake considered... I believe 17-18" is about right.

 

Sparks, can you post pics of how the intake is setup. Also where did you get the 3.5 piping? Figure i may try this out once i get the safc this spring.

 

This is how I set it up with the 3.5" stuff. (I only installed it on the stock intake manifold for the dyno, don't have specific pictures with stock IM and 3.5" piping)

I bought 3.5" aluminum piping off amazon. 3.5" velocity stack from BPI, 6"x4" AEM dry flow filter, 82MM ID (90MM OD) LRMAF housing.



Here's what my 3" with stock maf looked like with the stock IM... could do the same thing with LRMAF and 3.5" pipe.

 

thats the business. let me know the deposit amount that your looking for and if you need a core and im sure i can come up with some pennies .

especially if your seeing the differences prior to cams and well within the power range that im relegated to, i definitely think youll make a killing.

I cant remember, but this was able to be bolted on with the nwp spacers as well right? no clearance issues? guessing ill have to lose my cattman bar if you offer them

 

For the exact IM that I'm using, you 100% need ES mounts and a NWP torque link because clearance to the hood and firewall are around 1/2", less in spots. I doubt any strut bars would fit.

Just going to try and price some things and see if this is worth trying to produce.

 

sad partt is this shows that the intake side makes more power than most people are picking up with cams :/ once you throw the cams on there its completely possible to be in z power territory. neither here nor there. good job. ****.

 

I believe the amount of VQ35DE Zs that have made 280+whp on stock cams can be counted on less than one finger. We have the advantage of front wheel drive (drive train loss), while they have the advantage of long tube headers...

Also, cams are a gain above and beyond intake. They can not only be combined with an intake, but shift the power band to the right, allow power far beyond my current 7000 redline, and will probably see even bigger gains because of the large intake setup.

After the cams and V-manage, I will be getting some "professional" tuning done at national speed to see if they can set up my map better than me, then hit this same dyno again with my DRs and PS unhooked with dyno queenery in mind.

 

You do know what "Sparks" spells backwards is, right?

 

Oh yes, I can indeed read those letters backwards. I did make my IM out of some scrap metal from a local fab shop, does that ring ironic to you?

 

Everything rings ironic to me. It's a curse.

This effort of yours with the custom IM... amazing stuff. You just don't see this kind of work on a FWD, mid-level sedan. Hats off to you, sir.

 

It was well worth it. Loving the fact that it doesn't lose power vs a vias delete in the low end like I thought.

 

that's what I mean. This is a better mod for the range my auto is stuck in. I hated picking up more tq with the converter setup then losing it with an untuned ssim. I've been looking at cams, but no real way to extend revs and fully get the benefit. THIS is well within my tunable range, hell and every other autos with a higher peak gain than Anyone's posted with cams alone.
I realize this is a supporting mod to cans, but Damn.


Bob stockum did something along these lines on my high comp 4 cyl. He's been out of the business for quite some time.
The mani was a great addition and in adding the cans then tuning.....scary...then spray.....even more so.



****Edited for content****Damn Autocorrect on my phone :/

 

I'll be continuing to resist spraying again with all my might, but I can't say it isn't possible.

This mod is certainly cheaper and easier to install than cams with considerable gains, i'll give you that.

 

I think you Frankenstein Intake's 3.5" elbow is a bit small......Your torque will be strong but you HP will fall......Those were really good #'s with the stock IM and the 3" and 3.5" Homemade intakes.....good job! I think twin 3.5" elbows or a 4" or 5" elbow would feed more airflow to your Frankenstein plenum than that venturi restricted 3.5" elbow......IMO

 

I applaud your work Mr. Sparks. I was so close to doing this on my 3.0 with a 350z plenum but then I sold the car.

 

I'm not sure if this is sarcastic or not, I do hope it is. Just in case it's not... There are 100s of degrees of bend throughout the intake air's travel, an extra 30 degrees to direct my filter next to the battery isn't hurting anything. Just to prove that, here you go...

TB>MAF>Filter vs TB>MAF>Pipe>Filter


The intake (not counting the 6" venturi entrance to it) already has a cross sectional area nearly 50% bigger than the throttle body. Even 400whp V8s do not need more than a 3.5" intake to deliver the most power.

 

God damn it would you stop that...your making me want to buy another VQ...oh wait....

 

Here, look at it STD with smoothing. over 275 from 5500 to 7000

 

Good lord those are some nice numbers. I've seen so much money dumped in too all out N/A builds and only getting 305-310whp and here you are with just bolt-ons pulling 285whp.

LOL even my GTP would have a hard time with you and I'm doing about 300whp and 380wtq and I'm S/C'd

 

I am hoping that within the next 3-4 months, I will be able to hit that 305-310 whp without ever touching the bottom end (other than rod bolts to sustain revs).

Honestly, if I had put on the lightweight track wheels + DRs and removed power steering belt, I wouldn't be surprised to see 295-300whp right now.

Those modded GTPs are no joke, but i probably have a weight advantage on ya

 

Yeah with me in it - its ~3650-3700 lbs (surprising for the amount of plastic in it ). And your 6sp tranny vs my 4sp auto. It would be close, and with your experience on the strip, my bets on you.

 

Hey you never know, either way you should come back to the VQ world

 

Are these your #'s for the Frankenstein IM?

 

Yeah, these are final numbers.



Did NOT lose power vs the BOP stock intake manifold... Gained nearly 20whp peak, and 50whp at 7k rpms. The tiny power loss around 3500-4k RPMs was because of a rich spike I didn't have time to tune out, ran into 11s for a second there.

 

I would've thought that 3.5" elbow was too small......Damn those #'s are crazy! You misunderstood what I was saying...It had nothing to do with the bend radius but more so the tubing diameter feeding the plenum which is the elbow.....It would seem the twin 3.5" elbows would flow even more air! Nice job...getting pretty freaking scientific there Sparks....great experiment!!!! You deserve an A+....

 

Thanks! I love this kind of stuff... It's the nerd in me. The 3.5" elbow already barely fit (within 1/4" of the firewall). And going from the stock elbow to the 3.5" is already over a 50% increase in cross sectional area for flow, seems good enough to me

 

Also my initial response was looking at post #1 which was the stock IM with mods.....I thought the Frankenstien was going to fall short power wise in the RPM department but I was wrong....Sparks!!!!

 

Oh I see. yeah I did the stock IM comparison for the benefit of everybody here. I wasn't very surprised to see 6-7whp gains throughout the entire power band using a LRMAF and matching intake, but I know some will be.

TBH I was trying to be so conservative with my butt dyno results that I was sure it lost a bunch of low end power which is why it felt so dang strong up top. Obviously, I was wrong... It really did gain up top without any loss in bottom end.

 

So were you scared?
How many runs did it take to get the number where they are with your Frankenstein IM? Awesome #'s again just wish I knew more about setting up that resonance frequency or how you measure it without an Oscilliscope....

 

Not scared, just trying to be realistic.

An oscilliscope is not used for acoustic resonance lol. That FTLracing covers most of it, and a little google searching can get you the rest.


I partially stated earlier in the thread, but I did not have time to properly tune with the new IM because I only had an hour for testing and I tested a LOT of things. The tune that I did have for it was a quick and dirty from a few highway pulls the day before dynoing.... Blah I'll just quote myself from my dyno thread instead of restating all this.

So basically, there is more to gain with better tuning.

 

discussion is getting a bit repetitive. I shall refer you to these threads which should answer 99% of your questions cmax

http://forums.maxima.org/dyno-discus...ideo-pics.html

http://forums.maxima.org/all-motor/6...yno-gains.html

 

280+ hp and still the stock cams. Amazing!

 

Sparks, did you look into using a Q45 MAF at all? Would it be significantly more work or cost to use than the LR MAF? If I used the Q45 MAF, I should just be able to swap the velocity stack on my pop charger.

 

The LRMAF was only ~50 bucks shipped brand new. Didn't really have any reason to try a Q45 MAF.

 

Okay, thanks. And where exactly did you order this from? Sorry if I missed it somehow among all of your very informative threads... This is all very relevant as I am prepping to do a 350Z IM+5/16" MD spacer next month, and it would be nice to incorporate a 3.5" MAF at the same time. (And, yes, to anyone reading, I am aware of potential hood interference issues.)

 

was an ebay auction. I've posted the link to it a few times, don't have it on hand right now. It's just like this http://www.pgautoparts.com/index.php...products_id=54

 

Sparks,
read through the whole thread here and seems you got the piping from Amazon. What did you type in to get to the piping you have. My intake track is 2.75 right now and was gonna do a 3 inch full intake with the 3 inch MAF but i cant find anything with 3 inch ID. Haven't taken a trip to Autozone as im sure they would have it but would like to see on Amazon what they have.

 

You probably won't find 3" ID because 99.5% of all 3" pipe is 3" OD. Even the cattman 3" exhaust is 3" OD. My 3.5" intake is 3.5" OD.