Stock 5.7 intake mods & experiments - Page 4 - Toyota Tundra Forums : Tundra Solutions Forum

fobaum · #46 (**permalink**) 06-21-2008, 02:09 AM

I read your post thumbster and i decided to look at my air intake box ,and that mesh secondary filter did look like it would restrict alot more air flow, so i took it out witch was very easy, and its still in one piece ,its now has a faster throttle response, and now im getting 2 mpg's more, which is what i was hoping!!better mpg's calculated w/ scangauge & math ..thanks for the idea. :forrest

ballin · #47 (**permalink**) 06-21-2008, 08:25 AM

yeah i popped mine out a few days ago to. i wasnt sure if it was going to do anything at all, but what the hay, its not going to hurt anything. i was kinda surprised it gave it quite abit better throttle response. havent noticed any mpg change yet.

TRDDunn · #48 (**permalink**) 06-21-2008, 07:04 PM

I just got through doing all the mods and it does sound a lot better reving it sitting in the driveway(havent taken it for a spin needed to clean up) Man what a chore, the hole was easy but getting all the ribs out and smooth was a pain!!! Do you guys think I need to disconnect the bat. now? Thanks for the write up man!!

Imdone · #49 (**permalink**) 06-21-2008, 07:56 PM

I don't usually disco the batt because I have too much other stuff in the truck that I have to reset. The computer will relearn it.

Just like thumbs said though, get on it a little bit and the pull will come back. I turned off the traction control and put it into S and made sure it was starting in first and running through the gears and spent some gas and now it pulls nice and hard.

rangercib · #50 (**permalink**) 06-21-2008, 09:07 PM

Im glad this mod worked for you. Kinda funny, this is the EXACT mod I did and posted maybe a week or so ago. I had already removed the charcoal filter when I bought the truck and put in a K/N .A few differences being I cut the sides out of my airbox. I thought it was very loud on hard acceleration. The other difference is That half of this forum responded that I was a Bonehead for doing this.... guess it just goes to show the difference of being a moderator and a FNG.

thumbster · #51 (**permalink**) 06-22-2008, 01:59 AM

Quote:

Originally Posted by rangercib

Im glad this mod worked for you. Kinda funny, this is the EXACT mod I did and posted maybe a week or so ago. I had already removed the charcoal filter when I bought the truck and put in a K/N .A few differences being I cut the sides out of my airbox. I thought it was very loud on hard acceleration. The other difference is That half of this forum responded that I was a Bonehead for doing this.... guess it just goes to show the difference of being a moderator and a FNG.

I went back and read your posts from that thread - The title read "cut holes in airbox - now regret".

I didn't see anyone calling you a bonehead for cutting up your intake and I certainly wouldn't have myself. On the contrary, I thought you had a valid idea, but I think most people's responses to your thread weren't all that positive due to your own disappointment and regret. I give you credit for being a man and admitting you possibly did something wrong.

The main reason your intake ended being so loud was the location you cut the holes. This is why I opened up the bottom of the intake rather than the sides. Since you had holes cut in the back of the intake, you got all the induction noise hitting your firewall and therefor penetrating the cab.

Sorry if you felt like I stole the show... wasn't my intention. Even though you regretted chopping up your intake, you still contributed some important info here.

rangercib · #52 (**permalink**) 06-22-2008, 02:38 PM

I think you misunderstood. I'm not mad , or upset nor do I think you stole my mod. I'm glad it worked for you. I have actually gotten used to the sound, and like I said it's only real loud on hard acceleration. On a seperate note the title to my post was changed by someone. It's not the the title I gave it, but it's really is no big deal. I deffinately think it has better throttle response with the holes. I really don't think the air temp is going to have that much of a negative effect to outweigh the additional air volume going into the motor. It's all good!!

gary_william · #53 (**permalink**) 06-22-2008, 09:33 PM

took out the charcoal filter, added in the painted engine cover.

Mr. Creosote · #54 (**permalink**) 06-22-2008, 09:45 PM

Quote:

Originally Posted by gary_william

took out the charcoal filter, added in the painted engine cover.

Is that gold or a darker yellow? What color is the truck itself?

gary_william · #55 (**permalink**) 06-23-2008, 10:51 PM

Quote:

Originally Posted by Burger Steak & Eggs

Is that gold or a darker yellow? What color is the truck itself?

gold metallic. the truck is tan (desert sand). I am trying for a black and tan look, so I am slowly wiping out the chrome, either with black, tan/gold, or line-x.

Negra · #56 (**permalink**) 06-24-2008, 08:40 AM

Anyone cut out the "front section" of the lower airbox ?

thumbster · #57 (**permalink**) 06-24-2008, 10:48 AM

Another update - so far I'm definitely getting better fuel mileage! Don't ask me why, but I'm averaging 20.5 mpg with 75% freeway and 25% city! I know it just doesn't make sense that it's so good. I'm sure some of it has to do with my truck being lower weight than the DCs and being a 4x2. Looking at my fuel trims with the OBD2 reader it's showing the long term trims to be slightly leaner than before. I'm tempted to open the lower box up some more, but I'm afraid to ruin the progress I've made so far. Anyone else seeing results like this?

And one other update: I had the truck dynoed again and put down 322hp / 334ft.lbs (up from 305hp / 315ft.lbs

) - I'm still working on getting the jpeg converted to post the curve, but the file is corrupted. I'll try to see if I can get another copy. When I compared the old curves it looked like I gained a good chunk of midrange power. All in all not to shabby for an almost cost free mod (aside from the filter panel) - I'm very happy with the outcome of this mod

rod67 · #58 (**permalink**) 08-26-2008, 10:38 PM

Update on screen removal- 4000 miles later (now 22K) and my mileage is up! Best guess around 1.5 miles per gal.
No issues!

TX Tundra 07 · #59 (**permalink**) 08-27-2008, 12:40 PM

I had an idea that I wish someone had the skills to try (I have been reluctant) - I wanted to cut a hole in the plastic piece between the headlight and bumper and duct cold air back to the filter box. This is similar to the stock setup on a Trailblazer SS. I also wanted to replace the ribbed tubing between the filter box and the throttle body with straight tubing. This would give you a cheap alternative to the expensive CAI's and probably perform as good or better.

I just dont have any idea how to duct the air from the hole in the front to the filter box. I may mess with it this weekend.

Anyone wanna try it for me? You could also put a piece of mesh over the hole on the plastic piece to clean it up a bit. And if you mess up the plastic piece, it cant be that costly to replace.

thumbster · #60 (**permalink**) 08-27-2008, 01:57 PM

Quote:

Originally Posted by TX Tundra 07

I had an idea that I wish someone had the skills to try (I have been reluctant) - I wanted to cut a hole in the plastic piece between the headlight and bumper and duct cold air back to the filter box.
Anyone wanna try it for me?

I'll have to take a look at that myself.

I'm toying with the idea of taking out the upper grille insert piece and doing some fiberglass work to make a ram air setup. That would of course involve some cutting - not too sure I would want to go that far for the sake of experimentation.