4-Ripcord
New member
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ScanGauge II owners - Intake Air temps
- Thread starter ALBPM
- Start date
iDRiVaT4R
New member
I've been watching my intake air temp on my scangauge since I first bought it back in 08'. Used the scangauge in my Tacoma, 2010 trail and now my 4th gen. Honestly can't remember the temps from the Tacoma with the AFE intake. But in the 2010, stock airbox I've seen it go up around 140 degrees a few times. Mostly in stop and go traffic with outside temp around 90 and the AC on, Other times out off road in the desert. Usually when moving though it stays between 5-10 degrees higher than ambient temp.
I recently had my scangauge updated to newest firmware so I could get the tranny temp displayed. Works great. Highest I've seen it go is 170. And that was in stop and go traffic. Usually stays down around 120-130 degrees.
This Device is the best and the company even replaced the front plastic bezel for free cause mine had cracked in the top above the display. Like I said I've had it since February 08'.
I recently had my scangauge updated to newest firmware so I could get the tranny temp displayed. Works great. Highest I've seen it go is 170. And that was in stop and go traffic. Usually stays down around 120-130 degrees.
This Device is the best and the company even replaced the front plastic bezel for free cause mine had cracked in the top above the display. Like I said I've had it since February 08'.
ALBPM
New member
What Intake do you have????
Gerdo
New member
All stock. Intake is inside the fender. The only thing that isn't stock is I removed the choke tube after the elbow in the fender.
I was idling for 15 min or so while I tried 30 or more codes in my scangauge, trying to get the A/F to read.
08GX470Driver
New member
heatsoak!!!! This is usually the problem with the aluminum, barely shielded "cold air" intakes.
I've spent the better part of the last 2 years developing a hood sealed intake for the Lexus IS and GS lines because almost all other options left you with a lighter wallet and no provable gain in horsepower. I'm including K&N, INJEN and even the f-sport versions lumped together.
In all of my research, I didnt find a single intake that could do a good a job as the stock intake at keepin intake temps down. That is until I designed mine.
If the entire engine bay isnt sealed off from the incoming intake air, then you wont see maximum gains from the smoother path. This is why I would lean toward the volant brand for my gx470 unless I decide to design one for it too.
Also, here's another tidbit of info. If lexus, or toyota could have achieved a single mpg better by designing these trucks with an aftermarket style intake, they would have. The addition of an intake WILL NOT INCREASE MPG all other things equal. What might happen is that you replaced a very dirty and clogged filter with a new one, in which case ANY filter would show improvement. As an example, the IS350 comes from the factory with a 3" diameter intake tube, although through volumetric efficiency calculations I was able to determine that it could make its peak horsepwer without problem with only a 2.25" diameter tube. This tells me that filtration was not the problem with power delivery, but that it was the turbulence in the system I needed to reduce.
Just some things to keep in mind.....
I've spent the better part of the last 2 years developing a hood sealed intake for the Lexus IS and GS lines because almost all other options left you with a lighter wallet and no provable gain in horsepower. I'm including K&N, INJEN and even the f-sport versions lumped together.
In all of my research, I didnt find a single intake that could do a good a job as the stock intake at keepin intake temps down. That is until I designed mine.
If the entire engine bay isnt sealed off from the incoming intake air, then you wont see maximum gains from the smoother path. This is why I would lean toward the volant brand for my gx470 unless I decide to design one for it too.
Also, here's another tidbit of info. If lexus, or toyota could have achieved a single mpg better by designing these trucks with an aftermarket style intake, they would have. The addition of an intake WILL NOT INCREASE MPG all other things equal. What might happen is that you replaced a very dirty and clogged filter with a new one, in which case ANY filter would show improvement. As an example, the IS350 comes from the factory with a 3" diameter intake tube, although through volumetric efficiency calculations I was able to determine that it could make its peak horsepwer without problem with only a 2.25" diameter tube. This tells me that filtration was not the problem with power delivery, but that it was the turbulence in the system I needed to reduce.
Just some things to keep in mind.....
Gerdo
New member
While trying to figure out my issue with, tech answered your question.
"The one listed on the forum (used by ALBPM) is just slightly different than the very first A/F code that’s listed on our webpage in the ISO section. You’ll notice that all the digits are the same except one:
ALBPM’s A/F
TXD: 686AF10124
RXF: 04410524
RXD: 2808
MTH: 05B900800000
NAME: A/F
From the ScanGauge Website
TXD: 686AF10124
RXF: 04414525
RXD: 2808
MTH: 05B900800000
NAM: A/F
The only difference is there’s a 4 in the 5th digit of the RXF in the ScanGauge website code while ALBPM’s has a 0 in that spot. This is actually why ALBPM’s A/F shows values like 1470 instead of 14.7 – the 4 in the RXF that we use inserts the decimal correctly."
GottaBeTRD
New member
Maybe i read this wrong and forgive if i did, but a good quality aftermarket intake allows more flow in your engine (obviously) Toyota didn't make it this way stock, most likely because these things make a lot of noise. The majority of people don't modify their cars so that's why they make them the way they do. A lot of the newer cars that are built for performance come stock with an intake just like the Volant or Airaid i think its called?
If an decent aftermarket intake doesn't increase gas mileage, then explain to me why I'm continuously getting above average from what the stock ratings are? I have the Volant too with their Powercore filter. I have had this same filter on there for 2 years untouched and continue to get these results. I think its a little asinine to claim that a CAI will not improve your mpg's. I would rephrase in saying that not ALL CAI will imporve your MPG's RANT off
sorry to go off topic.
Gerdo
New member
They make throttle body spacers too, and they do absolutely nothing on a direct injected motor. (which our 3.4L is)
Clownmeat
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ALBPM
New member
My gas mileage is back to what it was with stock sized tires after installing my Injen CAI. With 285 E weight tires I'm getting 18-19 MPG in town and have a lot more power that with the Stock Air Box and an Airaid ISR mod.
Plus my intake air temps are lower than when I had the Stock Air Box.
I would like to see more temps from K&N and other types of CAIs.
08GX470Driver
New member
Why are you assuming that an aftermarket intake will allow more flow then the engine can consume than the stock piece? Do you think, that as Toyota, they would restrict their motors performance by placing an undersize filter element in it? NO. The filter size and flow are MORE than enough from the factory, as I have demonstrated. Where the increases come from are in the removal of the noise reducers and less turbulent path.
And, if you'd like to get down to it, hot air will provide you with the best mileage.
Cold air - power
hot air - efficiency
It works in the same manner as a 40 degree ice tray freezing faster than a 100 degree ice tray, all other things equal. It just take less energy to make the matter conversion.
Hot air will more easily combust than cold air....but cold air packs a denser air molecule for the same volume of flow.
Guys, I'm not trying to pull your chains or anything, I'm just stating the facts. Like, I said, the only thing that is of benefit to your engine is the smoother path. The stock box performs as it should and the stock filter and even the diameter of the intake path has been oversized from the factory. Even though I havent done the calculations, I can almost guarantee it.
You tell me how putting any different filter on it will help with flow if it's already getting every teeny weeny bit it needs to produce its max power?
Besides, your valuations of your mpg increases are anything but scientific.
Here, look at K&N's explanantion if you dont believe me.
K&N Frequently Asked Questions (FAQ)
Do you know why they dont advertise increased mileage?? Because they cant....it simply isnt provably true.
I'm not trying to upset any member or anything, I was just sharing my experience and knowledge on the matter because engineering quality performance intakes is what I do as a business.
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Clownmeat
New member
It's just a hand-held obd2 scan tool, so it will stream everything, about $100.
GottaBeTRD
New member
I appreciate your input and i too don't want to get in an argument about this cause its been discussed so many times. But if there is a brain to pick i'm glad it's yours!
I'm not running a K&N, and not trying to state that my intake is better than all the others, but not all CAI do the same thing. I don't see how they could be classified as the same when they are all built different. As for the throttle body spacer, i agree that those are trash.
As i stated earlier; a lot of the newer cars and trucks have their stock intake designed similar to the quality aftermarket CAI companies. Some are even coming with the cone filters now. The innovators over at Toyota are continuing to find ways to make something better. Then they apply them to their new cars. Maybe in wrong in saying that these designs CAN possibly improve an older car's performance and economy? Toyota obviously didn't have the same technology they did 10 years ago. So is adding a legitimate CAI pretty much like trying to run windows 7 on an old computer?
I know your a genius when it comes to this stuff, So i don't have much of a leg to stand on, but i just don't know what else could be improving my mileage other than this.
Oh an my filter claims better MPG's and it's nothing like the oiled cone filters or even the dry flow cone filters. It's completely different with the material and stuff.
Big Red 82
New member
Gerdo:
These should work for you.
Air to Fuel (lambda)
TXD: 07E02144
RXF: 04614544
RXD: 2808
MTH: 006400800000
NAM: AFL
Air to Fuel (True Ratio)
TXD: 07E02144
RXF: 04614544
RXD: 2808
MTH: 05BE00800000
NAM: A/F
These should work for you.
Air to Fuel (lambda)
TXD: 07E02144
RXF: 04614544
RXD: 2808
MTH: 006400800000
NAM: AFL
Air to Fuel (True Ratio)
TXD: 07E02144
RXF: 04614544
RXD: 2808
MTH: 05BE00800000
NAM: A/F
08GX470Driver
New member
I appreciate your input and i too don't want to get in an argument about this cause its been discussed so many times. But if there is a brain to pick i'm glad it's yours!
I'm not running a K&N, and not trying to state that my intake is better than all the others, but not all CAI do the same thing. I don't see how they could be classified as the same when they are all built different. As for the throttle body spacer, i agree that those are trash.
As i stated earlier; a lot of the newer cars and trucks have their stock intake designed similar to the quality aftermarket CAI companies. Some are even coming with the cone filters now. The innovators over at Toyota are continuing to find ways to make something better. Then they apply them to their new cars. Maybe in wrong in saying that these designs CAN possibly improve an older car's performance and economy? Toyota obviously didn't have the same technology they did 10 years ago. So is adding a legitimate CAI pretty much like trying to run windows 7 on an old computer?
I know your a genius when it comes to this stuff, So i don't have much of a leg to stand on, but i just don't know what else could be improving my mileage other than this.
Oh an my filter claims better MPG's and it's nothing like the oiled cone filters or even the dry flow cone filters. It's completely different with the material and stuff.
Yes, I'm aware you may not be using K&N, but they are a large company that has a brand image and I was just providing some commentary from them on the matter.
As far as CAI, all being the same, they should be....in the sense that a cold air intake should NOT be injesting engine heat at all, otherwise it would be an oxymoron wouldnt it? Some companies like to advertise their intakes as cold air when they are actually warm air intakes at best. Where they will differ is in the path and length of the intake they chose. Although, each specific engine has its special length of intake path to keep max torque at the stock peak rpm.
Also, throttle body spacers do indeed perform a function. It's just that the function may not be what people expect. The only thing a thottle spacer does is increase the total length of the intake tract, thereby moving the peak torque down in the RPM range. This may provide a street racer with the extra grunt down low. It's a tradeoff though, cause he'll run out of steam up top. Lengthening the intake itself will also provide similar results. This is the reason why I generally stick with a length calculation that will achieve STOCK peak torque rpm and also provides gains across the band. What I mean by this is that if peak torque occurs at 4500rpm, then thats where I'll design mine to occur....it'll just be more of those little torques joining in the fun.
It may be that older generations of motor would greatly benefit from CAI in terms of POWER. Like I said earlier, cold air is for power, hot air for efficiency. If the old engine was so hampered by itself, it's foreseeable that the intake could increase power AND mileage in that it makes it easier for the truck to operate.
Toyota's modern engines though are already pretty exceptional in sealing out engine heat and allowing enough flow. Your MPG increases could be from a host of factors. For instance, I started going a different route to work and tested both my stock intake and aftermarket intake for IAT's and mpg. Well, mpg increased tit for tat on both, with a deviation that cant even be considered....because of the route and little else.
The bottom line is that if you're buying an intake, buy it for the peak power increases and beautiful sound and dont expect MPG increases. The number 1 mod to get you the best mileage with any combination of aftermarket parts is a light right foot and easy braking.
Also, I'm not a genius.
Thanks for the ego boost, but Mensa hasnt come drooling over my experience in intake design.
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