Jump to content

Recommended Posts

Posted
2 hours ago, Firehawk T/A said:

This is a good read. https://www.hpacademy.com/technical-articles/air-intake-restrictions-explained/  Ultimately any restriction to incoming air in an engine will result in reduced volumetric efficiency. For example a dirty air filter at any rpm range will reduce how efficent the engine is at filling each cylinder with air. The same is true for a cold air intake that is designed to flow better than the stock air box. At any given rpm it will be more efficient at filling the cylinders with air, thus creating more power. 

On any vehicle I have installed a cold air intake on, I have personally noticed that I need less throttle pressure to accelerate up to speed, along with a slight increase in fuel mileage. I highly doubt I will ever recoup the investment in fuel costs, but I don't really care. I like the way it looks, sounds and feels while driving it, and thats enough for me.

This is the line to pursue. 

You just like it. Now that I can understand. 

 

 

Have you ever been able to say to yourself: "My air filter must be getting dirty as I feel it's taking more pedal to accelerate to 60 mph"?  

 

The honest answer is:

No

 

If you can honestly say yes then shame on you for letting your filter get to the point of collapse.

 

Take a hard look at the VE tables in your ECU. (If you can access them) As far as it is concerned fuel is metered by cylinder VE which is a percentage of manifold pressure. NOT atmospheric (airbox/plenum pressure). The pressure between the TB and the inlet valve. Look at those tables throttled. You can have 99% VE at 15% TPS. The MAP is placed AFTER the filter but BEFORE the  Helmholtz box because?????? 

 

Look, I've never argued that a CAI cannot make power. My argument is....it doesn't matter.....unless......

 

 You just like it, Or race naturally

This is the line to pursue. 

 

Enjoy the noise ? 

 

 

 

 

 

  • Like 1
Posted
17 minutes ago, Grumpy Bear said:

This is the line to pursue. 

You just like it. Now that I can understand

 

 

Have you ever been able to say to yourself: "My air filter must be getting dirty as I feel it's taking more pedal to accelerate to 60 mph"?  

 

The honest answer is:

No

 

If you can honestly say yes then shame on you for letting your filter get to the point of collapse.

 

Take a hard look at the VE tables in your ECU. (If you can access them) As far as it is concerned fuel is metered by cylinder VE which is a percentage of manifold pressure. NOT atmospheric (airbox/plenum pressure). The pressure between the TB and the inlet valve. Look at those tables throttled. You can have 99% VE at 15% TPS. The MAP is placed AFTER the filter but BEFORE the  Helmholtz box because?????? 

 

Look, I've never argued that a CAI cannot make power. My argument is....it doesn't matter.....unless......

 

 You just like it, Or race naturally

This is the line to pursue. 

 

Enjoy the noise ? 

 

 

 

 

 

You just like it. Now that I can understand. ?

  • Like 1
  • 4 weeks later...
Posted
On 9/30/2020 at 3:24 PM, TXGREEK said:

Here ya go, here’s just one of the reasons why you should consider spending your money somewhere it would apply itself in a much more positive way. Just one of the many lawsuits consumers have filed throughout the years.

 

Don’t be taken by marketing firms paid big money to find your inner automotive desires, Research it before you buy it.

 

 

https://www.classaction.org/spectre-performance-air-filters-and-intake-systems

 

 

Sent from my iPhone using Tapatalk

I think you should read the link you provided a little closer---No Where in the article did it say that a CAI doesn't do as a company may claim. It simply said that this particular company misrepresented their product! I  can only assume that the competitor that started the suit tested the Spectre product and found their claims to be false.

 

In a Spectre Performance lawsuit lodged by a competitor, it was alleged that the company made false claims concerning its air filters and intake systems, specifically the products’ fuel economy, air flow, filtration, horsepower capabilities and approval from the California Air Resource Board (CARB).

  • Like 2
Posted
I think you should read the link you provided a little closer---No Where in the article did it say that a CAI doesn't do as a company may claim. It simply said that this particular company misrepresented their product! I  can only assume that the competitor that started the suit tested the Spectre product and found their claims to be false.
 
In a Spectre Performance lawsuit lodged by a competitor, it was alleged that the company made false claims concerning its air filters and intake systems, specifically the products’ fuel economy, air flow, filtration, horsepower capabilities and approval from the California Air Resource Board (CARB).

It was a point made that there’s no guarantee of any exact amount of HP or TQ gains, it’s all mystical as they’ve been proven worthless by a great number of reviewers. I also have tried on numerous vehicles throughout the years to have found zero, zip, nothing in performance gain but definitely louder and noticeable less power.


Sent from my iPhone using Tapatalk
  • Like 1
  • 1 month later...
Posted

I'm "ALMOST" sorry I started this thread "ALMOST" LOL---It has been entertaining to say the least. I especially like the posts that say there is no proof that a CAI works and in their second breath make claims that a CAI doesn't work without providing proof to their claim???? 

 

I ordered the S&B CAI not long after starting this thread and finally received it this past Saturday and installed it Sunday. It was not difficult to install (but I am a retired aircraft mechanic) but I feel some will have difficulties with a couple of the steps on removal and installation! Some reported having more engine noise than before--I have not noticed anything different in that department??? I have noticed better throttle response than before and it seems to pull a little harder. As far a MPGs go I need a couple weeks to see if there are any gains no matter how big or small! The true MPG test is to see what I get pulling my boat. Before it was around the 13.5-14 MPG mark. I'm hoping that will increase but we'll see!!

  • Like 2
Posted (edited)

why bother with the CAI, , if your throttle TPS is only opening 80% , you wont feel any gains..  anyone else wonder why this is????

 

anyone know where in HPT software to go, for undoing the throttle limit? is this what is meant by our 5.3L motors are handicapped? should i install a 6.2 truck ecu file first if this is possible?

Edited by flyingfool
  • Like 1
Posted
21 hours ago, flyingfool said:

why bother with the CAI, , if your throttle TPS is only opening 80% , you wont feel any gains..  anyone else wonder why this is????

 

anyone know where in HPT software to go, for undoing the throttle limit? is this what is meant by our 5.3L motors are handicapped? should i install a 6.2 truck ecu file first if this is possible?

The throttle does open 100%, the difference is in how gm reads the tps vs hptuners/efilive etc. 

Posted
1 hour ago, M1ck3y said:

The throttle does open 100%, the difference is in how gm reads the tps vs hptuners/efilive etc. 

i'll check it out on hpt scanner, i was logging with a the Torque App. i'll just do a visual confirmation to check this is true

Posted
43 minutes ago, flyingfool said:

i'll check it out on hpt scanner, i was logging with a the Torque App. i'll just do a visual confirmation to check this is true

Lol, I wasn't asking you. And it's not 80 percent, it's 84ish.

  • Confused 1
Posted

The only way it would do anything really is if the stock one reduces air flow for noise.

If you inhale lots, you have to exhale lots, so if there is no free flowing exhaust its not going to do much. More air, needs more fuel... ecu is only going to do so much.

I would say exhaust/intake/tune for performance. Intake and or exhaust no tune is just for noise.


Sent from my iPhone using Tapatalk

Posted
On 12/8/2020 at 1:24 PM, Ed/2020RST said:

I'm "ALMOST" sorry I started this thread "ALMOST" LOL---It has been entertaining to say the least. I especially like the posts that say there is no proof that a CAI works and in their second breath make claims that a CAI doesn't work without providing proof to their claim???? 

 

You do know you can't prove a negative...right? 

:crackup:

 

Maybe if this gets repeated enough times it will sink in. Let's say your motor makes 300 rwhp before modification and 310 rwhp after modification. Fine, it makes more power. How do you access it? Go ahead, I'll wait....................

 

 

 

 

 

 

 

 

 

 

When you put enough load on the motor to 'require' 301 rwhp or more.

And when is that possible?

I'll wait again...no hurry. 

 

 

 

 

 

When you're at the RPM 301 rwhp is possible with the loud peddle on the matt.

So near red line. 

How often is that?

:rolleyes:

 

 

 

 

Wait, my dyno chart shows it makes 3 more hp at 2000 rpm.

Great!

At what throttle position?

Still waiting.

 

 

 

 

 

 

When the blade in the TB is standing straight up. 

 

 

Do you always drive with the throttle mashed?

 

 

Nothing you can do before the TB will put more air over that blade at ANY given position short of forced induction.

Not enough more to 'feel'

 

Sound is visceral

A Lion isn't more powerful because he's closer to you and sounds louder.

 

Cherry Bombs do the same thing.

Balloons in the spokes of your bicycle.

 

 

 

Posted

If you want it get it. It makes some difference. It’s funny how most people saying it’s stupid. Drive more truck than they need to get the job done. Most of us do. They may even have more than one ride.


Sent from my iPhone using Tapatalk

Posted

I like the sound better, and it does feel a bit more responsive (may be the sound)...I have the K&N - worth every penny in my book.

  • 2 months later...
Posted

I have been looking at s&b intake. The claim of 51% less restriction is at 600 or more cfm, what rpm is 600cfm achieved and better yet what is the restriction reduction at 1000rpm to 1500rpm.

  • 1 month later...
Posted
I have been looking at s&b intake. The claim of 51% less restriction is at 600 or more cfm, what rpm is 600cfm achieved and better yet what is the restriction reduction at 1000rpm to 1500rpm.

I went with the S&B
Love the sound, then I added a Borla SType
I’m love with the sound


Sent from my iPhone using Tapatalk

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts
  • Member Statistics

    342,980
    Total Members
    8,960
    Most Online
    Fishboat
    Newest Member
    Fishboat
    Joined
  • Who's Online   2 Members, 0 Anonymous, 508 Guests (See full list)


  • Latest Articles

  • Posts

    • Question @diyer2 on this line if you please. Are you saying the shudder is the system turning on and off at the frequency of the shudder? Guess I'm asking if you are saying you have seen it do this with the bi-direction scan tool in graph mode? If so have you been able to discern the 'trigger'. Something is telling to cycle rapidly.    My truck just started doing this recently. 197K on the clock. My response has been M5 anything under 55 mph. I treat it like a lugging stick shift. Gear down and let it spin a bit. Engauge M5, then tow mode and then M6 lets the trans stay in 5th but the AFM is active. Smooth like Skippy.    My thought was that as a machine ages the friction gets lower and as the system is load based, the lower friction would allow it to turn on at ever lower rpm until it reaches the lugging point. And yes I am ignorant of any minimum rpm requirement for the system. If you know that would be useful information.    As you know I run a Scan-Gauge II which allows me to watch the On/Off of the signal to the VLOM. While in the shudder mode I'm not seeing is cycle at that frequency or at all for that matter outside the triggers @newdude posted a few years back. Now is it possible that the refresh rate isn't fast enough to catch it? Maybe. It is why I asked my first question about graphing and trigging parameter.     As we have observed from members here the failure point is all over the map miles wise as you note yourself in your opening post. That by itself begs a few questions like fellows that comment on these lifters failing even after the system has been disabled. Long after. 😬   https://www.enginelabs.com/news/tech-tips-replacing-ls-active-fuel-management-lifters-with-melling/   The Gen5 lifters operate the same as the LS versions. In fact they are the same lifter.    https://www.enginelabs.com/tech-stories/sorting-out-gen-v-lt-lifter-failure-with-a-simple-valvetrain-fix/        
    • UPDATE 2: Steering wheel control backlights and control of the cluster can supposedly be achieved by adding a wire to pin 20 of the cluster and tapping it to pin 2 of the main clock spring harness. I'm going to give it a shot - will update  
    • GM Global A pickups 2019-2022 can do OTA programming for the radio.  GM VIP (GM Global B) can do OTAs for almost every module on board.  So a 2022.5 and newer pickup can do OTAs for recalls like the 2.7 fuel flow recall.  EVs get OTAs that improve one pedal driving, radio issues, HVAC issues, updated battery management software, etc.     So age of the vehicle/what GM electrical platform its on will alter what amount of updates can be pushed on OTAs.  
    • Thank You.   So far my new ride is making me look like a genius for going with the 3.0L, as my first fuel refill occurred over three weeks from when I took delivery.  This engine combination is very amazing.  So far no issues and had not done a regen yet.
    • I am curious as to how much fluid you put back in the transmission ( assuming you had replaced the filter to compare to my findings ) and then went through the process of warming up the trans before pulling the check plug to drain out the excess and if you measured how much came back out.    I just found it surprising that some claimed a certain amount less fluid being put in and then draining some back out. The attitude of the truck as per if the surface is level and how the trucks stance is would make quite a difference since the check plug is right at the front of the transmission. 
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...