Hello all. I am having a strange issue after installing an HPS intake on my type S. The check engine light is on and its saying I have an emissions issue. Now I have put putting intakes on nearly every car I owned, never once had an issue like this. It's just a pipe, MAF transfer and different filter. It was a gigantic pain to get the OEM box out and I am not really looking to swapping everything back to stock. Anyone have any issues like this? The only thing I can thing of is the instructions stated to disconnect the battery prior to install. I did not. I figured for the most remedial of upgrades, I should be fine. The battery is currently disconnected and crossing my fingers that a little ecu reset will fix the problem.

Any input would be greatly appreciated.

Thanks all!

 

What does the code say?

 

If the battery disconnect doesnt work (i bet it will) then take out the maf sensor and spray if with some sensor cleaner and put it back in. Theres only so many things that could go wrong.

when youve got it straight let us know how it is, not many write ups on here about that intake, ive managed to avoid buying to so far.

 

I've noticed if the car was still warm from driving, it will freak out when you u plug the maf. I've never had anything weird happen when the car was cold, or at least not driven for a few hours.
When disconnecting the battery doesn't fix it, just try to drive it around the block. I let mine idle for like 15 mins and codes didn't go away. As soon as I reversed about 5 feet everything reset, codes went away, and it drove normal.
The only other way to screw it up would be to not put in that black plastic circle thing at the end of the pipe closest to the maf.

 

Ok, I neglected to reply back to this yesterday. I disconnected the battery for 30 minutes and all is well. It seems these new cars are rather finicky!

 

Nowadays the closed-loop computerized fuel injection system for automobiles is very precise but complex. It cannot tolerate any messing around with its delicate sensors and components.

 

Hey all,

Just wanted to give a final response to the issue. The car completely lost its mind about a week later and basically every system in the car lit up a fault code. ABS, AWD, Traction, Stability, Collision Avoidance, Active Cruise, you name it. I took it to the dealership to which they troubleshooted for 2 days to no avail. They then offered to swap the factory airbox in for no charge and the car was fine and has been so for over a week. Here is the kicker. Upon my install, I had a leftover little plastic tube that was down inside the air filter when unboxing and I assumed it was simply an insert to keeping the filter from deforming during shipping only because I completely missed the step in the instructions that it is supposed to slide into and around the MAF sensor to what I can only imagine to be as keeping the car from losing its mind like mine did. I will be swapping it back out before long and will report back. Such an embarrassing oversight. I've been doing motor swaps since I was in high school so messing up an intake is almost comical.

 

 

Oh this keeps getting better. Upon rereading the install instructions, I missed a step. There is a little plastic insert that goes into the tube with the MAF sensor that performs some sort of voodoo as not to anger the sensor from a non stock configuration. I saw the piece in the box, assumed it was just some sort of thing to keep the filter from getting smashed during shipment and the icing on the cake was I completely missed the sentence in the instructions about inserting it into the tube. Long story short, I swapped it all back over... again and it works perfectly. Now I get my sweet awesome turbski noises. Being a guys that has been going engine swaps since high school, I was a little dismayed that I could screw up something as simple as an intake haha.

 

yeah I was going to ask if you forgot to install that piece. Basically the MAF sensors are calibrated to a very specific pipe size. That insert keeps the same size as the stock intake at the sensor location.

 

I'm a little late to the party but I just went through the exact same thing. I have a 2023 Acura TLX Type-S. Was just installing my HPS intake. And when I plugged everything back up and started the car everything went bonkers. All the lights lit up. I disconnected and reconnected the battery again and they turn off. But after reading this post I looked back inside the box and found that little plastic insert you was talking about. I will reinstall it in the morning and see. Definitely was a miss step but this thing did not come with no instructions unfortunately.

 

I'm so glad I read this post before installing mine. I made sure to put on that weird MAF sleeve and disconnect my battery before doing any work. I got some error codes upon first start, but after driving for a bit it all went away, even after starting the car up again a little later.

 

Yes after installed that plastic insert and re installed everything. All the Lights went off and everything work like a charm afterwards.

 

enjoy your hot air intake guys

 

I don't get it...the TLX comes with a factory CAI.

Why are people wasting their money to add a HAI?

 

We know, but we like the fact that it sounds better with HPS intake. Everything doesn't always have to be performing base. My car is not a race car. It is my daily driver. I'm not trying to make it faster or race world. I'm trying to make it more of a enjoyable driving experience for myself.

 

Oh we are. Don't you worry.

 

I do not know what to think after reading this thread. Purchased a 2024 TLX type-S in March of 2024 with 5 miles on it. As soon as I got it home I already had an HPS intake ready to install, as I ordered it weeks prior to the purchase in anticipation of the new vehicle. I am now just shy of 10,000 miles and 4 days ago, while in cruise going roughly 55 mph, my dash lights up with all of the errors you all speak of in this thread. The RPMs couldn't have been higher than a little more than 2000.

I take it to the dealership because I figured there is an issue with a sensor, or even a recall. They end up telling me that it is my HPS intake causing the faults and 1 of the 4 clamps wasn't tight enough causing more air to enter. They charge me $203, which I pay with no argument, because if indeed the loose clamp on intake caused the problem, it is aftermarket and not covered under warranty. I drive the car off the lot for about 20 miles and as I was backing into my driveway, my dash lights up with the same faults.

I would like to hear what you all think. Do you think this has anything to do with the HPS intake, while taking into account it has been installed since day one for 10k miles with no issue? Or do you all think it is something else.

At think at this point I have no choice but to put the old box back in and see what happens.

 

Can't really say man without being there. Did you check all you hoses and pipes to make sure there are no cracks there. How about the battery connections? Are they tight and not loose. I'm at 7800 miles on my car. My lights haven't come back on since installing the small plastic insert that goes in the MAF. Sorry which I could help more.

 

Just checking back in after a year or so away from the site. I have had mine on for a good 10k miles or so and zero issues. Regarding the hot air intake, iirc, the HPC box uses the factory 'cold air' snorkel and the box seals up against the hood. After all this time, I still love all the noises it makes and don't regret a thing.