That kind of depends on the driving. If you do mostly stop and go/city then the cooler air will be more beneficial.
Stock airbox- flap or flapless?
So, I did the snorkel flapper magnet removal thingy a while back and all has been good. I recently removed the stock resonator/silencer and all the plumbing and that has also been good.
My question is, how much of a benefit or not is removing the whole snorkel/flapper assembly? I ran with the flapper wedged open a couple days and noticed no power or MPG gains or loss.
What I did notice is the spread in ambient and IAT was about the same when hwy cruising 70 to 85ish MPH. However, my IAT would go up much quicker when slow driving or stop light etc and took much longer to get back down due to the flapper being constantly open to engine I would assume.
So my real question becomes, DOES THE ADDED FLOW FROM FLAPPER REMOVAL NEGATE THE EXTRA HEAT FROM NORMAL CITY DRIVING? Or, should flapper/snorkel assembly be removed and hole on the hot side be plugged alltogether? (Sounds dirty!)
And just to add to the mix, will be doing the vented fog lights soon and probably a 3.5" intake tube from box to j pipe from a certain forum member.
If you have read this far I know you have an opinion on this so please indulge me!
DD
My question is, how much of a benefit or not is removing the whole snorkel/flapper assembly? I ran with the flapper wedged open a couple days and noticed no power or MPG gains or loss.
What I did notice is the spread in ambient and IAT was about the same when hwy cruising 70 to 85ish MPH. However, my IAT would go up much quicker when slow driving or stop light etc and took much longer to get back down due to the flapper being constantly open to engine I would assume.
So my real question becomes, DOES THE ADDED FLOW FROM FLAPPER REMOVAL NEGATE THE EXTRA HEAT FROM NORMAL CITY DRIVING? Or, should flapper/snorkel assembly be removed and hole on the hot side be plugged alltogether? (Sounds dirty!)
And just to add to the mix, will be doing the vented fog lights soon and probably a 3.5" intake tube from box to j pipe from a certain forum member.
If you have read this far I know you have an opinion on this so please indulge me!
DD
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It won't have any effect. The engine is going to draw the air it needs regardless of the flapper. The stock intake didn't restrict air but it did limit added performance so in the higher rpm's, which you not doing in stop and go traffic, will show greater power gains with a larger more free flowing intake.
There are a lot of little things you can do to lower IAT's but the engine isn't your worst enemy here. There's a turbo and a cat that heat to over 1,000 degrees sitting at the back of the engine that also fills the engine bay with heat, especially in slow speeds.
Fist things first though, do you have an OBDII blue tooth adapter and Torque so you can monitor and "measure" your changes. Why modify or change something I you can't measure it.
There are a lot of little things you can do to lower IAT's but the engine isn't your worst enemy here. There's a turbo and a cat that heat to over 1,000 degrees sitting at the back of the engine that also fills the engine bay with heat, especially in slow speeds.
Fist things first though, do you have an OBDII blue tooth adapter and Torque so you can monitor and "measure" your changes. Why modify or change something I you can't measure it.
i removed the "felt" tube from the flapper to the airbox edge, then taped the airbox edge shut on both sides. left the flapper in the box.
Thanks for the responses guys. I have a reader and the Torq app and that's how I'm aware of the temp changes. My VT is a 2016 DCT with Magnaflow resonator and rear muffler delete. Also have a second cat delete and tork pipe.
The issue is that I drive pretty equally in stop and go traffic and straight highway (No traffic) depending on work schedule. My drive one way is about 37 miles so when in traffic I measured (Torq app) that it really heats up. When I have a no traffic commute, the VT pulls and drives like a beast and temps are consistently good.
Wondering if the fog light vents with the airbox inlet plumbed to the vent will help me get the best of both scenarios with the flapper assembly removed and side box hole kept open for more flow?
I do not want to go the Darth Vader route with CAI/SRI due to the noise. I feel my car sounds perfect now.
Any other suggestions?
DD
The issue is that I drive pretty equally in stop and go traffic and straight highway (No traffic) depending on work schedule. My drive one way is about 37 miles so when in traffic I measured (Torq app) that it really heats up. When I have a no traffic commute, the VT pulls and drives like a beast and temps are consistently good.
Wondering if the fog light vents with the airbox inlet plumbed to the vent will help me get the best of both scenarios with the flapper assembly removed and side box hole kept open for more flow?
I do not want to go the Darth Vader route with CAI/SRI due to the noise. I feel my car sounds perfect now.
Any other suggestions?
DD
Trdtoy offers modified stock airbox. Shoot him a pm and get both power and quiet airbox.
Thanks! I have been discussing this with Trdtoy (please chime in as PM box is full) and will probably be going this route soon. From my understanding with his box is that he leaves the flapper hole open.Trdtoy offers modified stock airbox. Shoot him a pm and get both power and quiet airbox.
If that is the case, will the extra flow be negated by the higher IAT's? Or will the temps not get high enough in stop and go traffic for this to even be a concern?
I am currently getting IAT's in stop and go with flap open around 145ish degrees in the high side depending on ambient. I live in TX so the heat is coming. At what IAT temp range threshold do I need to be concerned about? Or is my concern even valid with mostly street (often spirited) driving in Texas heat?
DD
He also modifies the airbox inlet and includes silicone or aluminum piping with 3" or 3.5" (your choosing). It looks really nice and he says it's quiet
Thanks Android. That is what I have read in the forums and the 3.5" outlet is the route I will probaby go.
DD
DD
What is your IAT over ambient when on the highway?
Average IAT's are 10 to 14 degrees above ambient when cruising 75 to 85 MPH with no traffic.What is your IAT over ambient when on the highway?
That's what mine are and I have 3.5" CAI and ORHP and I also heat shielded the intake.
Leesrt, here is a screenshot from my ride into work today. This is at about 20 miles of straight highway doing 70 to 85 with no traffic.
Keep in mind that this is before exiting highway so no stops. Once I sat through a few stop lights my IAT was at 113 degrees. Your temps aren't any better than this?
DD
Install a WAI kit and you can forget all about this. In the meantime, reducing engine bay temperatures should be your M.O.
Coolant bypass mod, lava-wrap the coolant tubes, remove the hood-cowl rubber/plastic strip. Those are just a few simple ways to cut down on engine bay temps for cheap.
Coolant bypass mod, lava-wrap the coolant tubes, remove the hood-cowl rubber/plastic strip. Those are just a few simple ways to cut down on engine bay temps for cheap.
Thanks for the info. I will look into those things.Install a WAI kit and you can forget all about this. In the meantime, reducing engine bay temperatures should be your M.O.
Coolant bypass mod, lava-wrap the coolant tubes, remove the hood-cowl rubber/plastic strip. Those are just a few simple ways to cut down on engine bay temps for cheap.
WAI = warm air intake? I don't really want the non boxed intake noise. Will probably get the stock box silicone tube from Trdtoy and finish modding the box myself but am wondering why leesrt isn't getting much better temps than me with his cai?
WAI=Water/Alcohol Injection, aka methanol injection
^^^ Lol. Thanks. Didn't know what a WAI was.
warm air intake :haha::crying::haha:^^^ lol. Thanks. Didn't know what a wai was.
I wasn't doubting your temps, I told you mine so you'd see there wasn't much difference even with add ons that are suppose to make things cooler.View attachment 83729
Leesrt, here is a screenshot from my ride into work today. This is at about 20 miles of straight highway doing 70 to 85 with no traffic.
Keep in mind that this is before exiting highway so no stops. Once I sat through a few stop lights my IAT was at 113 degrees. Your temps aren't any better than this?
DD
Leesrt, I didn't think you were. I'm just surprised temps aren't better with a cai. I'll probably just get a warm air intake and call it done 
LOL.
I am just wondering if it is worth it to upgrade the pipe size or not. Did you feel gains from the extra flow? I may just put the vented fog lights in and see how it feels before dropping the coin on a bigger tube.
DD
LOL. I am just wondering if it is worth it to upgrade the pipe size or not. Did you feel gains from the extra flow? I may just put the vented fog lights in and see how it feels before dropping the coin on a bigger tube.
DD
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