HPS Silicone Air Intake Hose For 5.6L V8

Forum for Infiniti M37, M56 M35h Hybrid and Q70 owners.
DKASM37
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Hermosa Blue/Wheat Interior
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Anyone had a chance to jump on the dyno with these yet?


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Ilya
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I'm supposed to sometime next week. My guy is like the only guy in the area so he's constantly busy...plus my car was back at the dealer cause they did some stuff wrong during the timing chain recall.

DKASM37
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Hermosa Blue/Wheat Interior
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No doubt, Ilya. Keep us posted on that. Btw I see u took off the cowl with the snorkels, any specific reason u run your set up that way?

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Ilya
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DKASM37 wrote:No doubt, Ilya. Keep us posted on that. Btw I see u took off the cowl with the snorkels, any specific reason u run your set up that way?
It gives the car a meaner growl under the hood. Based on UpRev readings, the temperature barely changed (a couple degrees, negligble) while in motion with it on/off (although, idling was a different story). See here: post6674631.html?hilit=uprev%20intake%20temp#p6674946

DKASM37
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Car: 2018 Infiniti Q70 Hybrid
Hermosa Blue/Wheat Interior
Infiniti Sport Exhaust Kit
K&N Drop-In Filters

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I'm in Florida so heat soak would be an issue for me, that's why I removed my Takedas n went back to the K & N drop ins. Thanks for the link to that post, good info.

DFW2011M56S
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I also have a set of these in black on my 2011 M56S. I put down 425 HP/434 TQ on a Dynojet with the cut-outs open.

K&N Drop-ins
HPS Intake Hoses
2.5 " mandral bent custom midpipes
Secondary cat and Resonator Delete
Jones Exhaust 2.5" X
Badland HPE Cutouts before axle back
Kept the factory mufflers for now
BullyDog GT 93 Tune +4° advance
170°F thermostat
TB Heat Bypassed

Put down 382/390 bone stock. 390/410 after the K&Ns, 2° advance and 170°F thermostat. The Tuner/Intake hoses/Exhaust collectively was worth 35 HP and 24 TQ. Currently Cipher shows it runs a bit richer than I feel it should and could probably gain with an Uprev tune.

As it sits the car is already a monster. 1st gear is WORTHLESS . lt loves to break the tires loose from a 30 mph roll in 2nd gear. Finally it ran door to door from a 60 mph roll with a ~500 hp 392 Challenger. Challenger has long tubes, full exhaust and CAI.

My 2012 Titan put down 334/402 on the same dyno with only an Airaid MXP4, Hypertech 93 tune, Secondary cat delete with 2.5"mid pipes and a Magnaflow muffler swap. Put down 296/388 TQ on a Mustang dyno across town. That truck also ran a 13.98 @ 97 mph in full street trim (5,350 lbs) on 305/50R20s weighing 85 lbs each in ~500 DA.

DFW2011M56S
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Ilya wrote:Actually, now that I think about it, these probably are not going to give 9hp. That dynochart is not from an M56. How do I know that? NO WAY we lose 90hp from crank to wheel (329hp on the dyno? REALLY)? Most cars lose like 20hp.

I might have to return these and just wait for the R2C. Or go down the street and have my car dyno'ed before and after.

EDIT: ALSO, the Dyno Chart date shows a date of 2010...a date in which the M56 did not yet exist and only the M45 existed.

I don't like shady stuff like this and refuse to support companies who claim specific numbers for a product that isn't even for our car. Definitely returning/refusing package.
15-20% MINIMUM loss through an automatic. Our engines are underated from the factory. Our engine realistically makes 450-475 HP at the flywheel right out of the box. Even at 15% loss (stick shift losses), my car was making 450+ hp to the flywheel STOCK.

Also first hand experience with the VK56DE tells me those engines are underated a good bit too. They make 350-360 HP despite the humble 317 HP rating.

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Ilya
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Well that saves me the time of doing it...guy I've been trying to get dyno time is CONSTANTLY swamped with kids and their Subaru's...

I'm going to go ahead and reinstall my HPS tubes until R2C releases their intake as I've been runnin stock in anticipation of the dyno being done but with your info there really is little need for me to do it.

Also, I wish I had an RWD M! I want to break my tires loose in second too! AWD kills any chance of having fun...even with VDC off this thing will barely chirp tires from a dig.

walt1227
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Car: 2011 Infiniti M56S
Location: Clayton, NC

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Just purchased a set of these myself. Did you guys see any difference in using them? Also are these cars really more like 450-475 HP stock? I kinda believe it to be true because it pulls so hard and fast. I was riding one night and my wife had a hemi charger pull up beside her the 5.7 and just half throttle she put a tail cutting on him lol. My brother has a 300C hemi and I beat him so bad the other day. The mustangs are scared to run me and the 6.1 chargers are always going the other direction. I did play with a Hellcat Challenger when he had the black key (500 HP) in and he could not pass me until I decided to get off the gas. I am suppose to race my cousin in his 6.2 CLS 63 but won't do that until I have my 2.5" exhaust setup done with the removal of the secondary cats, resonators, and stock mufflers replaced with magnaflow magna pack straight-through mufflers. So if those 450-475 HP stock numbers are right which I am 75% sure of this custom exhaust pushes this thing past 500 HP easy.

DFW2011M56S
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walt1227 wrote:Just purchased a set of these myself. Did you guys see any difference in using them? Also are these cars really more like 450-475 HP stock? I kinda believe it to be true because it pulls so hard and fast. I was riding one night and my wife had a hemi charger pull up beside her the 5.7 and just half throttle she put a tail cutting on him lol. My brother has a 300C hemi and I beat him so bad the other day. The mustangs are scared to run me and the 6.1 chargers are always going the other direction. I did play with a Hellcat Challenger when he had the black key (500 HP) in and he could not pass me until I decided to get off the gas. I am suppose to race my cousin in his 6.2 CLS 63 but won't do that until I have my 2.5" exhaust setup done with the removal of the secondary cats, resonators, and stock mufflers replaced with magnaflow magna pack straight-through mufflers. So if those 450-475 HP stock numbers are right which I am 75% sure of this custom exhaust pushes this thing past 500 HP easy.
Based on the fact I have run 94 mph in the 1/8 mile with the exhaust cutouts opened and dyno over 420 at the tire, I would say 500 hp is fairly easy out of this engine.

The ARH headers/high flow cats/exhaust system for a QX56/Patrol/Armada have HUGE gains even untuned. ~40 rwhp on the 390 hp single intake version.

MpamP
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:confused: https://www.dropbox.com/s/ujnyeczip7nuu ... M.jpg?dl=0

I must have a really messed up car, or dyno or both because the above link is my "before tune and then after tune" with my mods all installed before the dyno. :confused:

DFW2011M56S
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MpamP wrote::confused: https://www.dropbox.com/s/ujnyeczip7nuu ... M.jpg?dl=0

I must have a really messed up car, or dyno or both because the above link is my "before tune and then after tune" with my mods all installed before the dyno. :confused:
My guess is it wa running with the oil temps or IATs too hot. Also made a noticeable difference on all my VK56s so far to run in the 160-170°F range. Cooling fans do not come on until ~205°F on a stock M56.

I am also running without the engine cover and the upper radiator piece that is restrictive to airflow.

2.5" duals, X pipe, secondary cat delete and cutouts.

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Ilya
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DFW2011M56S wrote:
MpamP wrote::confused: https://www.dropbox.com/s/ujnyeczip7nuu ... M.jpg?dl=0

I must have a really messed up car, or dyno or both because the above link is my "before tune and then after tune" with my mods all installed before the dyno. :confused:
My guess is it wa running with the oil temps or IATs too hot. Also made a noticeable difference on all my VK56s so far to run in the 160-170°F range. Cooling fans do not come on until ~205°F on a stock M56.

I am also running without the engine cover and the upper radiator piece that is restrictive to airflow.

2.5" duals, X pipe, secondary cat delete and cutouts.
You need to start a 'build log' thread with images and exact details lol.

walt1227
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Where is this radiator piece?

DFW2011M56S
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walt1227 wrote:Where is this radiator piece?
It is the piece you remove to service the coolant reservoir and air filters. Car makes a mean intake growl with it removed as well. It has multiple sharp bends that are smaller than the intake tubes and airbox opening.

DFW2011M56S
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Ilya wrote:
DFW2011M56S wrote:
My guess is it wa running with the oil temps or IATs too hot. Also made a noticeable difference on all my VK56s so far to run in the 160-170°F range. Cooling fans do not come on until ~205°F on a stock M56.

I am also running without the engine cover and the upper radiator piece that is restrictive to airflow.

2.5" duals, X pipe, secondary cat delete and cutouts.
You need to start a 'build log' thread with images and exact details lol.
If I can ever stop long enough from work, tuning GM vehicles and working on my stuff I will do that!!!

Just picked up the heads for my GM 6.0 LQ9 from the machine shop this week. ARP rod bolts and main studs are on the way, then it will be engine assembly followed by an LS swap in my tow vehicle I use to pull my travel trailer. Once it runs it will be tuning to make the LS6 cam and Trailblazer SS intake run correctly. 400+ hp in an Express van with a stalled 4L80E and 4.56 gears should be fun, lol! I threw a cam, 1.6:1 rocker arms and headers on it over a year ago and ended up hurting the old 350 from my constant abuse.

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armybrat
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Custom 2-1/2" X-pipe exhaust with OEM sport mufflers
HPS intake hoses
Uprev tune
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walt1227 wrote:Where is this radiator piece?
It's actually a ram intake air duct that channels air through the grille into the air filter boxes. Some folks remove this to facilitate more air flow. I prefer to leave mine on; as an alternate method, I drilled several 3/4" holes in the filter boxes to allow more air to be sucked in. I believe that this along with the ram air duct set up, will produce the same effect (growl included) as removing the duct altogether without the heat soak issues.

MpamP
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That's a nice idea Army, my plastic clip holders on rop of my intake boxes are broken. I'm going to try this and see what it does for mine. How may holes did you drill? Could u post a pic?

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armybrat
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MpamP wrote:That's a nice idea Army, my plastic clip holders on rop of my intake boxes are broken. I'm going to try this and see what it does for mine. How may holes did you drill? Could u post a pic?
I drilled a bunch in the front and sides (intake side) with a unibit...maybe 18 - 20 or so. Heck you could just saw out a big square for that matter, but I thought the holes would look cleaner. I will post some pics when I get home. I ordered a set of the HPS intake hoses on Ebay a couple of days ago. I believe that these hoses plus with the holes in the filter boxes or with the air duct removed (if that is what you want to do) will be as good if not better than the R2C intakes.

TomL5
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For those that have the HPS hoses installed for a while in their engines, how are they holding up? From the pictures online, the surface finish looks pretty glossy and I was wondering if they will dull over time.

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Ilya
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Mine look fine still. Just dusty.

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armybrat
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Ok here's what I did as far as drilling the holes. The inside is ribbed so I drilled a hole in each square:
Image

Image

With the air duct removed:
Image

Air duct inlet. Air goes through the grille and is routed to each side air filter box.
Image

Image

1080Rider
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Reviving an old thread...

Armybrat, thanks for the pics! It's good to see other people's handiwork!

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armybrat
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Car: 2012 M56x with Tech Package (sold)
Custom 2-1/2" X-pipe exhaust with OEM sport mufflers
HPS intake hoses
Uprev tune
Location: Winston-Salem, NC

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1080Rider wrote:Reviving an old thread...

Armybrat, thanks for the pics! It's good to see other people's handiwork!
No worries, read through this thread: r2c-intake-t604534.html

DoN_BLaZe34
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Bringing back and old thread. Guys who purchased was this worth it?

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Ilya
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Eh. I didn't do a before/after tune so can't quantify it. It sounds good and looks good so...there is no heat soak per se like the old school cold (read hot) air intakes...so it can't hurt performance.

DoN_BLaZe34
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Lol that wasn't a very convincing testimony! Sounds like you like it, but you're not sure it's worth the money.

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Ilya
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DoN_BLaZe34 wrote:
Sat Apr 14, 2018 12:24 pm
Lol that wasn't a very convincing testimony! Sounds like you like it, but you're not sure it's worth the money.
This is also the only part I have lol. If I had an exhaust, etc. I'd probably like it more. :chuckle:

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paranoidjack
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Popped the hood of my new ride and took a closer look today. Interesting what I found....looks like someone made a Stillen kit "fit" the car. They did a pretty good job with the finish work. I prefer to make all my own factory mods myself, but I may just leave this alone! Sounds nice under throttle.


macgiver
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mac, Dyno testing after installing that Sillycone is tantamount to wanting to Dyno after a 9 O'clock Dump in the J-JON :rotflmao


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