JB4 map 3, misfire now CEL

[KiaStingerNewb]

Until you said diy intake I was saying bullshit Kia dealers were and maybe still are installing k&n intakes stinger haus. Not that it makes a difference but on their end it is not even a manufactured part for the car it's a back yard mod. Hope it all works out for you.

Thanks man.

 

[turboAWD]

The firewall wire is NOT bluetooth - it's OBD2 wire. Without that, no logging, very little control, and less power, IIRC. Bluetooth = wireless, so why would bluetooth need a wire??

 

[KiaStingerNewb]

The firewall wire is NOT bluetooth - it's OBD2 wire. Without that, no logging, very little control, and less power, IIRC. Bluetooth = wireless, so why would bluetooth need a wire??

Ahhhh. My bad. Thanks for clarifying. So basically that step is required and Bluetooth is that piece next to JB4 with blue light I guess.

 

[turboAWD]

Ahhhh. My bad. Thanks for clarifying. So basically that step is required and Bluetooth is that piece next to JB4 with blue light I guess.

I believe so. I have an older bluetooth module, it looks like a small dongle on a short cable sticking out of the main unit.

Without obd, for example, I couldn't get any rpm/boost/etc readings on the app. I think you can still get SOME mapping, but only very basic boost increases and reduced safety.

 

[KiaStingerNewb]

I believe so. I have an older bluetooth module, it looks like a small dongle on a short cable sticking out of the main unit.

Without obd, for example, I couldn't get any rpm/boost/etc readings on the app. I think you can still get SOME mapping, but only very basic boost increases and reduced safety.

What's easiest way to wire OB2? The main part looks easy but gonna need to read up on fuel wires and OB2

 

[runner1]

Just push the cable through the grommet, take off the plastic cover on the drivers side in two seconds and pull the cable up and over to the jb4 ten minutes should be enough start to finish.

 

[turboAWD]

Just push the cable through the grommet, take off the plastic cover on the drivers side in two seconds and pull the cable up and over to the jb4 ten minutes should be enough start to finish.

And keep in mind, these are "internet" times - it took me ~15-20 minutes to get familiar with the grommet, push it out, remove the ECU cover and the cable from one side of the ECU so my hand could fit into the space, get my daughter to push the obd cable through while I held the grommet from the firewall side, then route the cable, then push the grommet back into place. Terry says he can do it in 30 seconds.. I wouldn't want to try doing it in less than 10 minutes just for the grommet. But apparently, I'm DIY challenged

 

[Scott Curry]

And keep in mind, these are "internet" times - it took me ~15-20 minutes to get familiar with the grommet, push it out, remove the ECU cover and the cable from one side of the ECU so my hand could fit into the space, get my daughter to push the obd cable through while I held the grommet from the firewall side, then route the cable, then push the grommet back into place. Terry says he can do it in 30 seconds.. I wouldn't want to try doing it in less than 10 minutes just for the grommet. But apparently, I'm DIY challenged

no you're not it was a bitch I couldn't even feel my thumb by the time I finished doing this. I ended up taking a screwdriver and tearing through the grommet, I gave up trying to push the grommet through let alone the cord that would have been the kinked in between the sharp firewall metal and the very tough gromit, didn't help that it was 20° outside. There's got to be a better way than going through there.

 

[runner1]

Then run it in the door jam in through the fender. There’s a small open area in the fender panel right in the same area. The door seal will secure the cable. Very inconspicuous

 

[runner1]

I’m a big proponent of appropriate applied heat to working surfaces, learned from when wrapping body panels in vinyl. A hair dryer on the grommet would be a huge help.

Heat makes everything better working on a car (appropriate heat)

no you're not it was a bitch I couldn't even feel my thumb by the time I finished doing this. I ended up taking a screwdriver and tearing through the grommet, I gave up trying to push the grommet through let alone the cord that would have been the kinked in between the sharp firewall metal and the very tough gromit, didn't help that it was 20° outside. There's got to be a better way than going through there.

 

[Scott Curry]

I’m a big proponent of appropriate applied heat to working surfaces, learned from when wrapping body panels in vinyl. A hair dryer on the grommet would be a huge help.

Heat makes everything better working on a car (appropriate heat)

Yes very good point didn't think of that and I have a heat gun as well.

 

[runner1]

Those are great on exterior parts, But things can get out of hand quickly with those little buggers so be suuper careful

 

[cncBilly]

no you're not it was a bitch I couldn't even feel my thumb by the time I finished doing this. I ended up taking a screwdriver and tearing through the grommet, I gave up trying to push the grommet through let alone the cord that would have been the kinked in between the sharp firewall metal and the very tough gromit, didn't help that it was 20° outside. There's got to be a better way than going through there.

It literally took me 2 minutes, thought it was very easy. Mind you I could reach my hand down beside the ECU and grab the wire and lightly pull. No problems! You guys that are having trouble here must be over thinking it or something because it really isn’t that difficult. Take a deep breathe and try try again.

 

[turboAWD]

It literally took me 2 minutes, thought it was very easy. Mind you I could reach my hand down beside the ECU and grab the wire and lightly pull. No problems! You guys that are having trouble here must be over thinking it or something because it really isn’t that difficult. Take a deep breathe and try try again.

Once it was through, sure. I couldn't easily push the obd cable through, even with the grommet loose - it only moved 1/4 inch into the firewall, just enough that with pressure from my hand there was a gap - without that, no gap to push the jb4 cable through.

When I was pushing/pulling on it, there was enough space, but then I couldn't find a way to push the cable through. I didn't want to push "connector first" to force the grommet.. With my hand in the firewall, obviously no way to get the cable through from the dash side, hence help from the daughter.

Second time, sure, it will be much easier, but would probably still need 2 people. Maybe I'm just too afraid of breaking things. Probably comes from breaking too many (*&@#$ VAG plastic clips on my MK1/MK2 GLI/GTI..

Edit: maybe GTs have less wiring going through the firewall, allowing the grommet to move further? If it had moved even half an inch further into the firewall, it would have been MUCH easier. That seems to be the story of this car - everything is just 1/4 to 1/2 an inch away from being DIY friendly. See my complaints about coil pack bolts!

 

[cncBilly]

Once it was through, sure. I couldn't easily push the obd cable through, even with the grommet loose - it only moved 1/4 inch into the firewall, just enough that with pressure from my hand there was a gap - without that, no gap to push the jb4 cable through.

When I was pushing/pulling on it, there was enough space, but then I couldn't find a way to push the cable through. I didn't want to push "connector first" to force the grommet.. With my hand in the firewall, obviously no way to get the cable through from the dash side, hence help from the daughter.

Second time, sure, it will be much easier, but would probably still need 2 people. Maybe I'm just too afraid of breaking things. Probably comes from breaking too many (*&@#$ VAG plastic clips on my MK1/MK2 GLI/GTI..

Edit: maybe GTs have less wiring going through the firewall, allowing the grommet to move further? If it had moved even half an inch further into the firewall, it would have been MUCH easier. That seems to be the story of this car - everything is just 1/4 to 1/2 an inch away from being DIY friendly. See my complaints about coil pack bolts!

Sorry I’m confused, are you feeding it from the engine bay side to inside the car. Or are you feeding it from drivers side through then pulling it into the engine bay from beside the ECU?

 

[Lord3Putt]

Does the JB4 void the manufacturers warranty?

I use this method and can get it done in under a minute. I just tape the end of the cable to a coat hanger. The hardest part about this for me was actually finding a metal coat hanger.

 

[cncBilly]

Does the JB4 void the manufacturers warranty?

I use this method and can get it done in under a minute. I just tape the end of the cable to a coat hanger. The hardest part about this for me was actually finding a metal coat hanger.

Exactly! I didn’t even need a coat hanger, just pushed it through a couples inches then reached down and grabbed it from the other side.

 

[turboAWD]

Sorry I’m confused, are you feeding it from the engine bay side to inside the car. Or are you feeding it from drivers side through then pulling it into the engine bay from beside the ECU?

From driver's footwell to the engine bay beside the ECU. I couldn't get the grommet to move far enough to get the cable through without really pushing hard on the cable connector, and I didn't want to bend/break anything at the connector/wire from pushing too hard.

I ended up pulling the grommet from the engine bay side so that my daughter could push the connector through without issue. I prefer to take things slow and not damage things by forcing them..

 

[runner1]

The grommet is soft rubber, did you have the right grommet?

 

[turboAWD]

The grommet is soft rubber, did you have the right grommet?

It's SOMEWHAT soft rubber. It looks correct based on pictures, is in the right location from what I gathered (about 3-4" diameter, behind the fuse box), pushed out about 1 cm (I was expecting it would push out at least an inch based on other's description), opened into the engine bay where it was described, and still had enough pressure on the firewall hole to keep the hole closed when I wasn't actively pushing on the grommet. I WAS able to push against it to open up a temporary opening, but then there was no way to get my other hand through with the obd cable.. At least, it didn't seem likely.

Maybe the wire loom on the engine bay side in my car is angled just a bit more than normal, making movement harder than for most? It didn't want to move any further into the engine bay than just enough to push the lips (whatever they are called) JUST to the other side of the metal - maybe 1/4" - 1/2" inch total movement of the grommet and it was under pressure from the engine bay, holding the opening closed.