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SXTH Element Engineering Intake Development

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Discussion starter · #141 ·
CoolCorollaBro said:
What ended up being the problem? And what was the prescribed solution?
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It ultimately comes down to the pressure signal from the PCV tube to the sensor. With increased flow from an intake, the pressure in the tube comes outside sensor range and trips the light under the specified throttle conditions.

For some people, the new PCV tube with relocated sensor port hasn't fully set within sensor range. I have designed a bracket to get the sensor closer to the PCV tube with a shorter vacuum hose connection. this is what he has tried ou

I have been sending these out to anyone that has reached out, so if you do have a CEL pop up even with our new PCV tube I can send this to you to try as well. So far it has worked for the 7-8 people I have worked with so far.
 
#142 · (Edited)
Lol just noticed SXTH beat me to the reply. Keeping my up anyway below:

CoolCorollaBro said:
What ended up being the problem? And what was the prescribed solution?
Click to expand...
The signal loss from the length of the hose to the vacuum sensor can be an issue. It seems to affect some more then others. Shortening the hose as I've highlighted above can help or resolve the problem. They can also provide a relocation bracket that moves the sensor considerably closer to the PCV barb so the hose is only about 3 inches long which is ultimately what I needed. Took about 5 minutes to install.

I seem to be in the outlier group, be it my driving style or climate / elevation. All but one of the times I had the CEL trip was during some type of sudden or inconsistent throttle input which I assume effects the vacuum and thus the signal picked up by the sensor. Seems most who have had this issue are in colder climates as well.
 
#143 ·
I just got mine installed a few days ago and haven't had any codes pop up. I did make one minor change in the hardware on the clear cover. I used some bonded sealing washers (home depot) to preventing the cover to crack due to over tightening:
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@SXTH Element Engineering is it safe cap off the 2 ports on the switching valve on the side of the air box?
 
Discussion starter · #144 ·
Zenki_GR_Corolla said:
I just got mine installed a few days ago and haven't had any codes pop up. I did make one minor change in the hardware on the clear cover. I used some bonded sealing washers (home depot) to preventing the cover to crack due to over tightening:
View attachment 27642

View attachment 27645

View attachment 27644

View attachment 27641

View attachment 27643

@SXTH Element Engineering is it safe cap off the 2 ports on the switching valve on the side of the air box?
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Yea that's fine :)
 
#145 · (Edited)
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Got mine a week ago and finally installed it! Ignore the dusty engine bay, it needs a detail, I just got back from my first road trip with the car!
Installation was a breeze, but i have a question for SXTH, or anyone who has installed it, does the PCV fix vacuum tube (the one that connects to the sensor) fit the sensor snug? The ID of mine seems to be a hair too big, it fits and seems to mostly seal with the angle the tube is, but is pretty loose. So far after 20 miles no CEL, but should I be concerned? Would it be bad for me to zip tie it just for some peace of mind that it wont slip off? Or is this by design?

Edit: I missed that post above talking about the same thing haha, I’ll just zip tie it for now and I can always cut it off if it becomes a problem.
 
#146 ·
TheBeta100 said:
View attachment 27739 Got mine a week ago and finally installed it! Ignore the dusty engine bay, it needs a detail, I just got back from my first road trip with the car!
Installation was a breeze, but i have a question for SXTH, or anyone who has installed it, does the PCV fix vacuum tube (the one that connects to the sensor) fit the sensor snug? The ID of mine seems to be a hair too big, it fits and seems to mostly seal with the angle the tube is, but is pretty loose. So far after 20 miles no CEL, but should I be concerned? Would it be bad for me to zip tie it just for some peace of mind that it wont slip off? Or is this by design?
Click to expand...
The PVC fix vaccum hose goes to the sensor, while the port on the valve cover gets capped off.
 
#149 ·
Rustler said:
Sxth Intake users and/or @SXTH Element Engineering : Any further CEL issues?

Is there any correlation between the CELs and low outside air temps? I would want to run this through Montana winters, so anything sensitive to cold is a hard no.
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No CELs for me since my lasts posts in this thread. My install may have been an anomaly but after a couple support messages and fiddling I've been good ever since. Car has seen ambient temps as high as 95 and as low as 32 since then with no further CEL.
 
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#150 ·
Rustler said:
Sxth Intake users and/or @SXTH Element Engineering : Any further CEL issues?

Is there any correlation between the CELs and low outside air temps? I would want to run this through Montana winters, so anything sensitive to cold is a hard no.
Click to expand...
I was getting P2C90 on and off for a few weeks. The clamp for the crankcase side of the PCV fix hose had come loose so I swapped it for 2 worm style clamps. I also had the dealer perform TSB-0063-24 to help the ECU tolerate slightly out of spec crankcase pressure values and so far so good🤞

So far I've been driving the car at -4*C (20*F) ambient, temperature seems to be a minor factor as I was tripping the code consistently at almost full boost at ~3500rpm. The price we pay for good boost weather in Canada 🤷‍♂️
 
#151 ·
First day with my intake. 200 miles on the car. First hard pull and my dashboard lit up. All sensors and maintenence alert. No visible vacuum leaks. In south Florida and just dropped below 60°. Can't be the cold temps I'm hearing affect it. Pulled the engine cover and nothing loose. Do we have to plug the vacuum tubes on the sensor that is bolted to the side of the air box? I can't think of anything else.
 
#152 ·
ThaLilGRC said:
First day with my intake. 200 miles on the car. First hard pull and my dashboard lit up. All sensors and maintenence alert. No visible vacuum leaks. In south Florida and just dropped below 60°. Can't be the cold temps I'm hearing affect it. Pulled the engine cover and nothing loose. Do we have to plug the vacuum tubes on the sensor that is bolted to the side of the air box? I can't think of anything else.
Click to expand...
I haven't had any issues with mine, I had installed over the summer and any CEL codes, since then. It doesn't say to plug the switching valve, but I plugged mine just in case. Here's the set I purchased: Amazon.com
 
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