Turbo Kit Test TJ

[Space Naught]

I don't go for the "a re-gear will give you all the power you need" sentiment, but you would be wise to re-gear before attempting to add more power through the likes of a turbo. It won't help much if you are lugging around.

The first rig I got had a 32RH with 33s and 3.07 gears. A re-gear and turbo would have made it a fun little monster.

I am currently in a 01 4.0 w/ 32RH. its got 3.07 gears and I am currently running 235/75R15 Michelin Defender LTX M/S. I really want to go with some 31/10.5R15 KM3s or KO2, but dont want to have a bogged down jeep.

Its great right now, but boy I hate how small it is next to even my fathers stock 2017 Silverado. I'll end up doing a 2" lift, control arms (To fix caster and vibes) and a body lift to get 3" over all. then add the 1.5" ish lift from the tires. Really see no need for larger than 31" tires for where I live and what I do with it.

 

[Tater Log]

Has anyone experienced your barometric pressure not moving from 95Kpa after the install? Jeep runs with MAP sensor unplugged, I am truly perplexed at this point.

 

[Juggernaut]

Has anyone experienced your barometric pressure not moving from 95Kpa after the install? Jeep runs with MAP sensor unplugged, I am truly perplexed at this point.

Do you mean not changing from 95kpa day to day? What does it read key on engine off? Is MAP values reporting correctly?

 

[Tater Log]

Do you mean not changing from 95kpa day to day? What does it read key on engine off? Is MAP values reporting correctly?

I’ll caveat, I’m not the tuner, just the end customer searching for some answers, so please excuse if I can’t answer as well as you’d hope haha but I appreciate any input.

Engine off reads 95kpa, engine on 95kpa, baro will not move. Jeep runs and starts both with sensor plugged in and unplugged. Voltage confirmed at 5 for the plug. This is the second MAP sensor, and am going to try a third tomorrow.

Jeep runs better with it unplugged at this point, and only have some stutter going from dead stop to moving.

 

[Tater Log]

I’ll caveat, I’m not the tuner, just the end customer searching for some answers, so please excuse if I can’t answer as well as you’d hope haha but I appreciate any input.

Engine off reads 95kpa, engine on 95kpa, baro will not move. Jeep runs and starts both with sensor plugged in and unplugged. Voltage confirmed at 5 for the plug. This is the second MAP sensor, and am going to try a third tomorrow.

Jeep runs better with it unplugged at this point, and only have some stutter going from dead stop to moving.

Smoke tested for vac leaks, had none. It almost seems like the ECU can’t or won’t allow the MAP sensor to make baro correction.

 

[Rickyd]

I’ll caveat, I’m not the tuner, just the end customer searching for some answers, so please excuse if I can’t answer as well as you’d hope haha but I appreciate any input.

Engine off reads 95kpa, engine on 95kpa, baro will not move. Jeep runs and starts both with sensor plugged in and unplugged. Voltage confirmed at 5 for the plug. This is the second MAP sensor, and am going to try a third tomorrow.

Jeep runs better with it unplugged at this point, and only have some stutter going from dead stop to moving.

You need to add quite a bit more info. We don't even know what you are driving,who did the tuning,or why you aren't talking to the tuner about it.

Codes? Troubleshooting to date?

 

[Tater Log]

My apologies

05 TJ Rubicon 6 speed 4.0L throwing P0129 code after installing RSI kit, and tuning off of RSI base file

I am in correspondence with the tuner who is stumped past installing a stand alone ECU as he believes it is the issue at this point. Also I have an account so I figured I would start here, as I have learned the best advocate for your issues are yourself even if you pay someone to do that for you lol.

As mentioned, checked for vac leak no issue

Checked plug and unplug of MAP, while running and not, no change in kpa, just a better throttle in neutral and from stationary to first gear. Voltage was read as a change with the plug and unplug, but no deviation in pressure.

Replaced the new kit MAP with another new MAP sensor, still showing 95kpa. Will be testing with another new MAP sensor tomorrow.

Verified voltage at the MAP male side, showed correct 5v

Hope this gives a slightly better picture to help me troubleshoot.

Thanks for your interest in my issue, any and all thoughts are helpful.

 

[Rickyd]

My apologies

05 TJ Rubicon 6 speed 4.0L throwing P0129 code after installing RSI kit, and tuning off of RSI base file

I am in correspondence with the tuner who is stumped past installing a stand alone ECU as he believes it is the issue at this point. Also I have an account so I figured I would start here, as I have learned the best advocate for your issues are yourself even if you pay someone to do that for you lol.

As mentioned, checked for vac leak no issue

Checked plug and unplug of MAP, while running and not, no change in kpa, just a better throttle in neutral and from stationary to first gear. Voltage was read as a change with the plug and unplug, but no deviation in pressure.

Replaced the new kit MAP with another new MAP sensor, still showing 95kpa. Will be testing with another new MAP sensor tomorrow.

Verified voltage at the MAP male side, showed correct 5v

Hope this gives a slightly better picture to help me troubleshoot.

Thanks for your interest in my issue, any and all thoughts are helpful.

Does your stock tune read 95kpa? 05-06 computers are unreliable at best. Maybe send it to @Wranglerfix to test?

 

[Tater Log]

Does your stock tune read 95kpa? 05-06 computers are unreliable at best. Maybe send it to @Wranglerfix to test?

Unfortunately stock does read 95kpa, and agreed, I have reached out to wranglerfix tonight via email, might just order a PCM as you mentioned they are notoriously bad.

 

[Juggernaut]

Before you spend a lot of money on a PCM and new license, do the MAP values change as you drive? Baro and Map are related and read by the same sensor but have different purposes in the tune. If the Map varies ( which it should), the sensor could be ok but the scaling or calibration values for the sensor are off in the tune.

 

[Tater Log]

Does your stock tune read 95kpa? 05-06 computers are unreliable at best. Maybe send it to @Wranglerfix to test?

Well, I guess I’m now seeing the wranglerfix does not support tunes

Before you spend a lot of money on a PCM and new license, do the MAP values change as you drive? Baro and Map are related and read by the same sensor but have different purposes in the tune. If the Map varies ( which it should), the sensor could be ok but the scaling or calibration values for the sensor are off in the tune.

MAP does change, I’ll offer this to the party that did the tune.

Should the tuner be able to calibrate the sensor itself? I watched him work with scaling tables, but no matter what the baro wouldn’t change, and there was not the normal options he is used to for adjusting baro.

 

[Rickyd]

Well, I guess I’m now seeing the wranglerfix does not support tunes

I know. You send him a pcm with the stock tune to check if the pcm functions. Same goes for juggernaut tune idea. Put in a stock tune to double check. Have you traced each wire in the loom associated with map and check continuity,leak to ground etc?

 

[Juggernaut]

Before you spend a lot of money on a PCM and new license, do the MAP values change as you drive? Baro and Map are related and read by the same sensor but have different purposes in the tune. If the Map varies ( which it should), the sensor could be ok but the scaling or calibration values for the sensor are off in the tune.

Couple other questions are you back probing the electrical connector of the Map sensor and reading the signal Are you tuning via HPT?

Well, I guess I’m now seeing the wranglerfix does not support tunes


MAP does change, I’ll offer this to the party that did the tune.

Should the tuner be able to calibrate the sensor itself? I watched him work with scaling tables, but no matter what the baro wouldn’t change, and there was not the normal options he is used to for adjusting baro.

Ok big difference in info. That’s good that the Map sensor is reporting varying values. If you back probed the map sensor connector you should see varying voltage in the middle wire as the load on the engine changes. The PCM is most like ok if it is seeing these changing values. As far as the baro, the sensor needs to be calibrated in the tune to read correctly as a 2 bar sensor vs. your stock 1 bar. What is the correct Baro for your area? 100kpa?

 

[Wranglerfix]

@Tater Log our PCMs do support tunes.

 

[Tater Log]

I know. You send him a pcm with the stock tune to check if the pcm functions. Same goes for juggernaut tune idea. Put in a stock tune to double check. Have you traced each wire in the loom associated with map and check continuity,leak to ground etc?

I have not checked for continuity or leak, that was my next step tomorrow following a change in sensor test. I will update accordingly, thanks again for everyone’s brains on this.

 

[Tater Log]

Couple other questions are you back probing the electrical connector of the Map sensor and reading the signal Are you tuning via HPT?


Ok big difference in info. That’s good that the Map sensor is reporting varying values. If you back probed the map sensor connector you should see varying voltage in the middle wire as the load on the engine changes. The PCM is most like ok if it is seeing these changing values. As far as the baro, the sensor needs to be calibrated in the tune to read correctly as a 2 bar sensor vs. your stock 1 bar. What is the correct Baro for your area? 100kpa?

Our most significant issue is, there is no option to adjust barometric in the 05-06 computer.

 

[Juggernaut]

Our most significant issue is, there is no option to adjust barometric in the 05-06

Should start your own thread as not to derail Jezza's. Not trying to step on your tuners toes and I haven't seen your tune so I don't know what values are being inputted to match the MAP sensor you're trying to use, but MAP linear, Map Offset values are there as well as MAP and Baro under the engine dia. airflow tab. These will need to be set when using a 2 or 2.5bar sensor.

 

[Jezza]

Hello all. I thought it was important that I came on here and updated everyone on the current status of the turbo kits. From the beginning the kits were being fabricated, assembled and sold through Racing Solutions. I helped design the kits and we used my Jeep to make the first one. I don’t sell the kits and I don’t profit from them in any way. I have been contacted by one of their customers that is having difficulty getting his kit. I am trying to assist in the situation, but I have no control over their business. I just wanted everyone to be aware of this issue as it has been brought to my attention. Kinda sucks to end a thread this way. Perhaps in the future I will be in a position to offer the kits myself, but that is not the case currently. Thanks.

 

[Negreac]

Hello all. I thought it was important that I came on here and updated everyone on the current status of the turbo kits. From the beginning the kits were being fabricated, assembled and sold through Racing Solutions. I helped design the kits and we used my Jeep to make the first one. I don’t sell the kits and I don’t profit from them in any way. I have been contacted by one of their customers that is having difficulty getting his kit. I am trying to assist in the situation, but I have no control over their business. I just wanted everyone to be aware of this issue as it has been brought to my attention. Kinda sucks to end a thread this way. Perhaps in the future I will be in a position to offer the kits myself, but that is not the case currently. Thanks.

Thanks for the update. Have been considering this kit but now have my concerns if Racing Solutions cannot be trusted as a vendor. Hopefully we will hear back from those that have been able to purchase from them successfully or unsuccessfully.

 

[macleanflood]

Here's why we need decent TJ turbo kits on the market...this guy struggled to install an eBay special and ended up highly modifying the install.

I pointed him to Texas Jeep Products and the forums...that explains why the kit isn't on your website anymore.

Still dreaming of making something special for my 97. I want to tig up a custom exhaust manifold and intake that incorporates the turbo right there on the driver's side... minimum pipe lengths to minimize lag. Factory location for the downpipe.

-Mac