Real IAT Mod Kia stinger gt 3.3t

I’ll have a batch of 10 harness ready by the end of this month
I'm assuming there's value here even for an untuned machine considering the stock ECU still benefits from reading more accurate data. You can count me in on this if your looking for another customer.
 
I'm assuming there's value here even for an untuned machine considering the stock ECU still benefits from reading more accurate data. You can count me in on this if your looking for another customer.
Yes a stock vehicle will benefit. Better timing = better fuel economy, more low end torque, better knock control and more power across the whole power-band

Essentially all the benefits come from better timing due to the ECU reading actual real world intake temps
 
I Nominate 7thSonEngineering for "Kia Stinger Mod of the Year"

OH WOW—where do I even start? First impressions are absolutely incredible! Before this mod, my IAT readings were typically around +15°F over ambient. But thanks to the genius behind the "Real IAT" wiring, my readings are now almost identical to ambient temps.

The performance? Oh, it’s definitely there. The power increase is not just noticeable; it’s transformative. The car feels alive, more responsive, and way more fun to drive.

And the best part? It’s a super easy plug-and-play install! No complicated setup, no hassle—just instant results.

Hats off to 7thSonEngineering for pushing the boundaries of what the Stinger can do. This mod is an absolute must-have for any enthusiast. Highly recommended!
 
______________________________
I Nominate 7thSonEngineering for "Kia Stinger Mod of the Year"

OH WOW—where do I even start? First impressions are absolutely incredible! Before this mod, my IAT readings were typically around +15°F over ambient. But thanks to the genius behind the "Real IAT" wiring, my readings are now almost identical to ambient temps.

The performance? Oh, it’s definitely there. The power increase is not just noticeable; it’s transformative. The car feels alive, more responsive, and way more fun to drive.

And the best part? It’s a super easy plug-and-play install! No complicated setup, no hassle—just instant results.

Hats off to 7thSonEngineering for pushing the boundaries of what the Stinger can do. This mod is an absolute must-have for any enthusiast. Highly recommended!
Did you disconnect your battery too or just the IAT mod and then drive tf out of it?
 
Seriously considering doing this! Just gonna have to separate the JB4 harness and re-loom it. I’m guessing 20 min of my time and about $10-20 worth of supplies.
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Did you disconnect your battery too or just the IAT mod and then drive tf out of it?
When I installed mine I just kept the vehicle off did the mod and then drove off
 
Seriously considering doing this! Just gonna have to separate the JB4 harness and re-loom it. I’m guessing 20 min of my time and about $10-20 worth of supplies.
My price for the mod is 100$ (if you live in the United States)

Around 120$ for those outside the United States due to shipping prices
 
Last edited:
5x Real IAT sensor relocation harnesses ready to ship!! Dm me if interested. First come first serve.

100$ shipped in continental US
120$ shipped outside of the US


My draggy results from this mod + BMS BEF, BMS trans tune, Intakes and secondary cat deletes. 0-60 in the low 4s on 12.3psi (factory boost)
 

Attachments

  • IMG_5728.webp
    IMG_5728.webp
    131 KB · Views: 25
  • IMG_5729.webp
    IMG_5729.webp
    115.4 KB · Views: 23
  • IMG_5730.webp
    IMG_5730.webp
    136.7 KB · Views: 21
  • IMG_5668.webp
    IMG_5668.webp
    44.4 KB · Views: 26
Last edited:
______________________________
From interior to exterior to high performance - everything you need for your Stinger awaits you...
5x Real IAT sensor relocation harnesses ready to ship!! Dm me if interested. First come first serve.

100$ shipped in continental US
120$ shipped outside of the US


My draggy results from this mod + BMS BEF, BMS trans tune, Intakes and secondary cat deletes. 0-60 in the low 4s on 12.3psi of boost.
Trying to reach out direct but not seeing the option to. I must be too low on post count or something.
 
5x Real IAT sensor relocation harnesses ready to ship!! Dm me if interested. First come first serve.

100$ shipped in continental US
120$ shipped outside of the US


My draggy results from this mod + BMS BEF, BMS trans tune, Intakes and secondary cat deletes. 0-60 in the low 4s on 12.3psi of boost.
Count me in! I want one but I can’t dm you
 
Installation instructions for those who ordered harnesses.
 

Attachments

Probably should have checked this before I made the purchase.

Has anyone check their JB4 logs after doing the mod?
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Probably should have checked this before I made the purchase.

Has anyone check their JB4 logs after doing the mod?
Probably should have checked this before I made the purchase.

Has anyone check their JB4 logs after doing the mod?
Only 2 people are running this mod so far. Me and Djerickd. We both have ECU tunes not JB4s.

Log with your Jb4 after installing. The gains from this mod are all timing based. Essentially the car is just seeing near ambient temps every pull. Unless the JB4 doesn’t run well with ambient temps you will be fine (that would be absurd)

If they don’t work together I will refund and pay for return shipping.
 
______________________________
Just received mine, great turn around from purchase to shipping and a solid product to boot. Install was very straightforward, wasn’t quite expecting the new connectors to be so stiff clicking into place on the sensors but they did eventually seat in. My advice to anyone doing this is to put your two index fingers on the wings of the sensor and your thumbs on the base of the connector. This should ensure even pressure and provide enough force to seat into place without damaging anything.

All that said, I have not done any testing/driving yet. Too late/cold in the evening now. Will share my thoughts tomorrow when I can.
 
Seriously considering doing this! Just gonna have to separate the JB4 harness and re-loom it. I’m guessing 20 min of my time and about $10-20 worth of supplies.

Do you think it will be possible for Terry to just reprogram the JB4 via update to use the other sensor rather than relooming?
 
Took a short drive today to see if I noticed any changes from my ultra exclusive patent pending butt-dyno. :p
The good news is the car is running just fine, no check engine lights or other issues to speak of. Acceleration and engine response is still silky smooth. I didn't have any doubts about this but for the paranoid among us, fear not, an untuned Stinger will be just fine.

What about the power then? Well, it's been cold as hell here for the last couple of weeks (like so many other places in the US currently), so with that in mind I am happy to report there's definitely a noticeable bump in torque off the line compared to before. The punch my car has now has me thinking a diff brace is probably on my short list before any tuning happens. Power through the mid-upper range of the tach feels about the same if not slightly better; this makes sense based on the est. data that 7thSonEngineering collected prior to offering these to the rest of us. Every pull I did 'felt' identical to the last consecutively so the temperature readings are definitely more accurate as opposed to before when the sensor would start baking in the manifold. Since the MAP doesn't read temperature and instead reads manifold absolute pressure, having it sit in place of the TMap makes perfect sense (this is for those that still don't understand what exactly this is).

Without having any raw data to consult of before and after, the best I can really do here is tell the rest of you that this is really how these sensors SHOULD have been setup from factory. Why Kia put the TMap sensor in the manifold essentially directly above the intake valves where it can cook is beyond me. :rolleyes:

In the past on my previous turbo vehicles, the MAP sensor always resided after the throttle body on the manifold since it reads to 0psi or 'absolute' (atmospheric pressure) and is subjected to a constant vacuum when the throttle is closed. The TMap always had a home somewhere forward of the throttle body in the main charge pipe so it could not only read accurate IAT's post intercooler but boost pre-throttle body to prevent too much pressure from reaching the manifold. It's a hell of a lot more accurate way for the ECU to not only fuel the engine but control boost being fed into the cylinders. That's the short version on why this mod is so worth while for even an untuned Stinger. Your ECU is now essentially reading the way damn near all other turbocharged performance cars do and can more accurately control fuel and boost introduced into the engine. Timing should be significantly more stable as a result producing more power consistently.

TL;DR version; BUY IT. Seriously. Your car will thank you later.
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Back
Top