Help with soft pull after mods

[Tasigur09]

I have a 2024 z.
Had someone install an ams cold air intake, ams heat exhanger etc.
Car was running fine etc, then slowly felt like being dragged. Found out thay he dodnt put the undershroud back. Had a different shop reinstall the z1 aluminum shroud. Not sure if these guys did it right. Scrapping speed bumps, whistling during deceleration( intermittently) and doesn't pull hard anymore. Its been weeks I thought it might just be adjusting. Did an ecu reset and relearning. Something might have gotten dislodge during undershroud installation? Or something else

 

[toki]

I have a 2024 z.
Had someone install an ams cold air intake, ams heat exhanger etc.

What else is included in that "etc."?

What is the boost gauge reading during a wide open throttle pull?

One possibility is that the charge air coolant system was not properly bled after the installation of the heat exchanger, which could lead to high charge air temperatures, resulting in reduced power. That is just a wild ass guess knowing that improper bleeding after heat exchanger installation is a common issue.

 

[FSUZ33]

I assume you would have mentioned this, if so, but are you getting any warnings/lights?

 

[kevinbonds]

Could be allot of issues. The heat exchanger would not impact anything but your coolant temps, and you would see that in the temp gauge. The intake can be an issue, it's possible you have a large boost leak, I am guessing they did not secure the clamp on the turbo side, or possibly on the airbox for the AMS intake side. You should not be bottoming out or scrapping just from a new undershroud, unless you are also lowered. Look under the car and see if it's hanging down, or not secure right.

 

[Tasigur09]

Yes im lowered in a rake stance, 1.25 front 1 inch rear. Im bringing it to a reputable shop today. Aside from what I wrote, is there anything else I can mention to the mechanic?
Im thinking of having them recheck installation of hear exchanger , cold air intake, and undershroud. Might do some adjustments to thr height if needed. Also the undershroud. I noticed it after the installation of it. Maybe something got loose during the installation?.
Also thanks guys for being responsive!

 

[Xylander]

In short, you just tell the mechanic what the state of the car was before you dropped it off at the other shop, and a complete list of what was done. That will let him troubleshoot better. But, if the car's clearly not building power as it should, it should be throwing codes or there's a major boost leak. Sounds like something simple and stupid like a misfit hose or a loose clamp or something.

 

[toki]

The heat exchanger would not impact anything but your coolant temps, and you would see that in the temp gauge.

The charge air coolant system is separate from the engine coolant system, and there is no factory charge air coolant temperature gauge.

 

[kevinbonds]

The charge air coolant system is separate from the engine coolant system, and there is no factory charge air coolant temperature gauge.

Irrelevant, if the heat exchanger was having issues, the car would overheat, period.

 

[trackratZ]

Don't think the undershroud had anything to do with the cut power. You most likely have boost leak somewhere. Have the tech that did the installs go over everything again, including the HX. Hopefully the OP had it tuned after all those parts installed, weed out any issues, so important esp on turbo cars.

 

[toki]

Irrelevant, if the heat exchanger was having issues, the car would overheat, period.

It's not irrelevant, you just don't know what you're talking about. Explain the mechanism by which high charge air coolant temperature necessarily causes engine overheating. Try not to copy and paste some word salad bullshit from ChapGPT.

Also, you should know that you sound like an idiot when you say "period" to shut down further conversation, as if you are the one who defines what is true or not. Considering you don't even change your own oil, and I actually wrench on this platform, including installing my own heat exchanger, I think the odds are pretty high that you don't have the high ground here.

 

[kevinbonds]

It's not irrelevant, you just don't know what you're talking about. Explain the mechanism by which high charge air coolant temperature necessarily causes engine overheating. I'll wait. Try not to copy and paste some word salad bullshit from ChapGPT.

Also, you should know that you sound like an idiot when you try to say "period" to shut down further conversation, as if you are the one who defines what is true or not. Considering you don't even change your own oil, and I actually wrench on this platform, including installing my own heat exchanger, I think the odds are pretty high that you don't have the high ground here.

If there was an issue with the heat exchanger, the engine would run hot, and the temp gauge would go through the roof. One hard pull with a deficient heat exchanger the car would be close to overheating. So, it's irrelevant that the coolant and the intercooler are sperate systems, if the car is hot, it's hot, and it would register on the coolant temp gauge. I was wrenching on imports probably before you were born, so thanks for the feedback my friend, much appreciated.

 

[Tasigur09]

Yeah I just dropped it off. I told them what I wrote here. They've been pretty good with communication. Will update you guys soon!

 

[toki]

If there was an issue with the heat exchanger, the engine would run hot, and the temp gauge would go through the roof. One hard pull with a deficient heat exchanger the car would be close to overheating. So, it's irrelevant that the coolant and the intercooler are sperate systems, if the car is hot, it's hot, and it would register on the coolant temp gauge. I was wrenching on imports probably before you were born, so thanks for the feedback my friend, much appreciated.

Yeah bud, just sit this one out.

 

[FSUZ33]

Even if the radiator and engine coolant are in perfect working order, coolant issues in an air to water intercooler system on its own can cause engine overheating.

 

[kevinbonds]

Even if the radiator and engine coolant are in perfect working order, coolant issues in an air to water intercooler system on its own can cause engine overheating.

Exactly, persistent HIGH IAT's will lead to heat soak, which will cause the engine to overheat, and that will register on the temp gauge. You are absolutely correct.