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'21 Forte FE 6-Speed
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Water temp can be found with a cheap OBD2 dongle off Amazon and the Torque app on Android. Adding an actual gauge for it is dumb and a total nightmare.

Adding the other two is also kind of a waste of time and money since it’s an economy car but if you really want to you can get a sandwich plate for the oil filter and tap them both into there and run wires/lines. Not as hard, but probably still more work than it’s worth.

You’d also probably have to make your own mounting solution since nobody does this kind of stuff to these, so good luck with that.

Better question is why do you want to know this info? It’s not really necessary on that car unless you take it to the track or something.

If I sound like a pessimist that doesn’t understand why you’d want additional gauges, I added a bunch of auxiliary gauges to one of my other cars since it’s old and is known to have issues with that stuff that causes bigger issues. I’d do it if I tracked it, or boosted it or something that greatly increases the stress on your car. However, you have a non turbo economy sedan. This is mostly just non-necessary info that you won’t need if it’s your daily. If you track it or tow in hot climates or some sort of severe usage, then it’s a different story, but if it’s just your daily, I wouldn’t bother.

Not trying to discourage you, just leaving this here so you can consider your ideas before committing the time and money to do it. If you still want to, go for it! It would be sweet. Take pictures through the whole process.
 

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'21 Forte FE 6-Speed
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^ Glowshift recommendation is on point. Good stuff, if a little expensive.

For water temp, your best bet is to plumb inline on the output coolant hose from the engine. You'll have to find a diagram or figure out how flow is routed through the cooling system and insert a fitting in line with the hose that allows you to screw an NPT temp probe into it.

Here's how I did it on my Land Rover (not my post, but this is what I used to guide me):
Installing a Temp Gauge on a 2003 Disco II | Land Rover and Range Rover Forum (landroversonly.com)
Adapters for water temp: GlowShift | Water Temperature Gauge Sensor Adapters (glowshiftdirect.com)
You'll have to figure out the coolant hose size and which hose flows out from the engine to cut and put that piece in, but otherwise it's pretty similar.

Sandwich adapters for the oil filter for oil pressure/temp: GlowShift | Oil Filter Sandwich Adapters (glowshiftdirect.com)
You'll have to figure out which size to get for your specific thread size and pitch.
 
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Yes, but the computer only has access to limited data that it has sensors for. There is no sensor for oil pressure or oil temp. The light on the dash is a simple old school pressure switch. If you want those functions you’ll still need that adaptor to run the glow shift gauges. But for what the computer can’t show, that’sa nice factory-look solution
 
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I do actually happen to have a Bluetooth OBD2 adapter. I wound up getting a BlueDriver a long time ago - I wasn't sure of the cheap stuff. I have monitored these parameters on there before with no issues (mostly - phone was being finicky sometimes). (I don't use the adapter very often nowadays.)

Yeah, I'm not sure I want to do it or not really. It would look cool, yes, but that's not my main motivation. I thought'd it be a decent idea to have those monitored as well. I guess I could just use my BlueDriver for it...

Also I was curious. I don't think I'll ever take this car to the track. I'll probably get smoked a lot LOL.
I still do have a slight hunch to modify this car in some way though... but I also might not do anything.


That's a nice install! I don't plan on going that intense with it haha.
I mean you could always try autocross - it’s cheap, easy to start out with and not competitive. I plan on doing it at some point with mine. If it’s your only car and you want to have some fun (especially if it’s a manual), I say go for it.
 
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Autocross huh?
Sounds fun! Yeah, it's my only car (for now), and it's a 6 speed auto with the option of manual shifting. Maybe!
I mean hey, everyone starts somewhere!
 
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