JKOwners Forum banner
1 - 8 of 8 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter · #1 ·
Hey all!

I'm diving head first into the offroading/rock crawling scene here in Utah. Picked up my first rig in January, and have just been fixing up issues getting it ready to roll.

I'm currently looking for the stock Magnuson TVS1320 tune for this thing. It has a custom tune from the previous owner that shuts off a bunch of emissions monitors so I cannot get it ready for emissions :( If anyone know where to get the Magnuson tune for this let me know. Magnuson gave me the middle finger because I didn't buy it from them, so i'll never buy from them in the future based on my interactions with them.

Thanks for looking!

Wheel Tire Vehicle Car Grille


Tire Wheel Vehicle Car Automotive tire


  • Currie 70 front and rear axles
  • RCV Axle Joints
  • King 2.5 front and rear coilovers
  • Magnuson Supercharger

Looking forward to making lots of memories fixing all the crap that has or will break on this thing :)
 

·
Registered
Joined
·
2,024 Posts
Hey all!

I'm diving head first into the offroading/rock crawling scene here in Utah. Picked up my first rig in January, and have just been fixing up issues getting it ready to roll.

I'm currently looking for the stock Magnuson TVS1320 tune for this thing. It has a custom tune from the previous owner that shuts off a bunch of emissions monitors so I cannot get it ready for emissions :( If anyone know where to get the Magnuson tune for this let me know. Magnuson gave me the middle finger because I didn't buy it from them, so i'll never buy from them in the future based on my interactions with them.

Thanks for looking!

View attachment 366565

View attachment 366566

  • Currie 70 front and rear axles
  • RCV Axle Joints
  • King 2.5 front and rear coilovers
  • Magnuson Supercharger

Looking forward to making lots of memories fixing all the crap that has or will break on this thing :)
That sucks. Copy Pasta into modified as a question. Alasha might know.
 

·
Registered
Joined
·
3,093 Posts
Mine runs a lot better now that I've removed the (Edelbrock) TVS1320. You're only going to get the stock tune from whoever supplied the supercharger. And if you're in a state that requires it like California, then youll need the EO number and probably the sticker too. Anyway, They'll need to start with your original stock NA tune and then modify that and send it back to you. Pretty sure all of the supercharger suppliers work that way. You cant just download a tune from someone - they are tied to the PCM.

I'm surprised that Magnusson won't supply you the tune and a sticker for a nominal fee. You would still need athe stock NA tune from your PCM.

What monitors are still active? It might not be the tune.

I've been working with Diabltoona for my tunes since I was NA before the supercharger. I used his tunes when I was supercharged and then had a new one cut after I went back to NA. I am currently running a 91 octane NA tune and its fine. You'll need a Diablosport tuner to work with him. I don't think he uses HPTuners or SCT.

Will at Overkill Motorsports is another option. I think he uses Diablosport and HPTuners.

You failed to mention what year your rig is.
 

·
Registered
Joined
·
3 Posts
Discussion Starter · #4 ·
Mine runs a lot better now that I've removed the (Edelbrock) TVS1320. You're only going to get the stock tune from whoever supplied the supercharger. And if you're in a state that requires it like California, then youll need the EO number and probably the sticker too. Anyway, They'll need to start with your original stock NA tune and then modify that and send it back to you. Pretty sure all of the supercharger suppliers work that way. You cant just download a tune from someone - they are tied to the PCM.

I'm surprised that Magnusson won't supply you the tune and a sticker for a nominal fee. You would still need athe stock NA tune from your PCM.

What monitors are still active? It might not be the tune.

I've been working with Diabltoona for my tunes since I was NA before the supercharger. I used his tunes when I was supercharged and then had a new one cut after I went back to NA. I am currently running a 91 octane NA tune and its fine. You'll need a Diablosport tuner to work with him. I don't think he uses HPTuners or SCT.

Will at Overkill Motorsports is another option. I think he uses Diablosport and HPTuners.

You failed to mention what year your rig is.
Thanks for the info. Much of what you said is foreign to me. If my reply sounds like I don't know what i'm talking about, thats probably accurate :)

What is the "Edelbrock"? You removed your entire supercharger? Or is Edelbrock something else?

Here are the monitors that my scan tool tells me about which aren't "ready":
Fuel System
Catalyst
Evap System
Oxygen Sensor
EGR System

Unfortunately I got some work done on it recently which required the battery to be disconnected. After driving a few hundred miles I was able to get 2 of the 5 listed above ready. I know one of them was the oxygen sensor, but I can't for the life of me remember the other one that readied. I went a total of 450-500 miles trying to get the rest of the monitors ready, and nothing.

I have a Diablo T1000 that came with the Jeep from the seller. I'm pretty sure this is what held the initial tune from magnuson, but i'm not sure. I do know that he got an offroad tune done, and I'm currently seeing a custom file on the tuner, but I have no clue how to use this thing. I'm scared to hit the wrong button and bork my pcm, or lose this offroad tune that I may want later, etc.

Anyways, i'm ok with a standard tune that will run with my supercharger, and still let me pass emissions. I'm not really interested in squeezing every last HP out of the engine, I just want it to run decent. Do you think a custom tuner will be able to create something from scratch for me? Is that my only option at this point?
 

·
Registered
Joined
·
3,093 Posts
Two comapnies make a TVS1320 supercharger kit for the 3.6 JK. Magnusson was the first and then Edelbrock came oiut with one after that. Very similar kits but I always thought the Edelbrock was better. One reason is that it came with the smaller pulley as standard and you didnt have to pay to upgrade the pulley, belt and tune for a "high altitude" kit which was not smog legal. The Edelbrock kit was smog legal out of the box and had the smallest pulley possible with no upgrades.

Yup. I completely removed the supercharger kit and put it back to stock. I even ran water methanol injection for a while. It runs a lot better on the road and on the trail without the blower. Anyway, I did a fair amount of data logging on the trail and you don't see much boost on the trail and I never expended very much water/methanol either. Most of the ontrail logs showed less than 2-3psi of boost. You need to crank up the RPMs close to redline to see all the available boost. The jeep is also a lot easier to work on without the blower, not to mention that it weighs ~100 pounds less.

If you ever pull the blower, you'll see that the intercooler acts like a large oil catch can and it will build up oil in the manifolds and on the intercooler fins. Theres a lot of surface area there. You could remidy that by adding a catch can to trap the oil before it goes back into the supercharger, intercooler and engine.



Even an offroad tune should not be preventing those monitors from clearing. Either you have genuine problems or you cleared your OBD-II codes recently, which will also reset the monitors. You'll have to drive the hell out of the jeep to clear the monitors. In addition to putting a bunch of miles on it, you will need to have a full tank of gas and then burn it down to below half a tank or so to clear the evap monitor. You'll also need to go through several full warm up and cool down cycles, so it will take a few days in addition to the mileage tank of gas. Not sure what year yours is but it may not have EGR. My 2013 3.6 does not.

Did you have any engine codes becore it was cleared?

I would work with Johan (Diablotoona) or Will at Overkill on a new tune if you don't know who did the current tune. Not sure if the smog station can tell which tune you're running. I would just get a tune that makes it run better. The canned tunes form Magnusson or Edelbrock are just okay. Mine ran and performed a lot better with the Diablotoona tune. We had to go through several iterations of the tune and logging sessions before getting it right. You can do that via email. I had a tune for 100 octane fuel as well, since I have a local source for that.

Not sure what state you are in but even here in California, they do not do a tailpipe sniffer test.They just plug into the OBD-II port and look for cleared monitors and no OBD-II codes. If it's running right then it wont throw a code.
 

·
Registered
Joined
·
3 Posts
Discussion Starter · #6 ·
@White13JKUR

Thanks for all the info.

I know exactly what you are talking about with the intercooler. I did in fact pull the whole blower off and sent it into superchargeronline to get it rebuilt. it was filthy dirty, and had a bad coupler that needed to be replaced. I was thinking i'd put a catch can on at some point.

Mine is a 2014. I am in Utah, but I bought it out of California. His registration had lapsed last year, i'm not sure how he had it registered. He is either playing dumb with me about the readiness monitors, or there really isn't a problem.

My state doesn't do the tailpipe thing anymore, they haven't for a very long time. They just plug in as you described and look for the monitors to give them data. If the monitors aren't "ready", they fail the test. This requires them to complete certain drive cycles etc to ensure nobody is trying to cheat the system.

I have not cleared any OBD-II codes, nor have any appeared the entire time I've owned it. I have had the battery disconnected a few times, which I know resets stuff and caused me to need to complete drive cycles again. The problem is i've gone probably 500 miles in between having it unplugged trying to get them to ready. I've followed drive cycles that I've found online, I've done lots of freeway speed, slow speed, coasting, accelerating, etc etc. I've started with full tanks, i've started with 80% full tanks because i've seen that suggested as well. I simply don't understand how something would require more than 500 miles of driving to complete drive cycles. I saw 1 monitor ready pretty quickly, a second monitor took about 100 miles, and the other 3 just never readied. My scan tool tells me that those ARE available tests, that just aren't ready. I had a tuner over the phone tell me that he thinks the monitors got bypassed on the tune, and an engine shop that specializes in offroad stuff tell me the same thing. I have a 3rd source from another offroad shop tell me it could be the tune as well.

I will try to reach out to those 2 places you suggested. I'm curious how something gets tuned NOT on a dyno though? do they just take a stab at it based on experience, and I load it and try it out for a bit?

Thanks!
 

·
Registered
Joined
·
3,093 Posts
Yeah, do the catch can. I never got around to doing it on mine. Even the tuning guys will tell you that. You'll get a more accurate tune because the crankcase fumes will throw it off.

Yeah, even California hasn't been doing tailpipe tests since cars went to OBD-II. When I used to have a (BAR90) smog license, they were all tailpipe tests. Getting some of those to pass was pain.

A dyno tune will defintly be your best bet. You can come pretty close with tuning-by-email if you install WBO2 (Wide Band O2) and work with a good tuner (person). What you have to do is do a lot of data logging under different driving conditions. Johan has a whole script that he has you run trough and you log the results (idling, city sstop and go, steady highway at different speeds and WOT runs), . There are a number of PIDs that they'll have you log. Thre of the most important PIDs that they have you monitor are the long term and short term knock retard as well as the AFR. You can do all of that with the Trinity (T1000). That's what I have. The Trinity has an aux input (2.5mm stereo headphone jack IIRC) and allows for two auxiliary signal inputs. On mine, I used that for the WB02 for the AFR (Air Fuel Ratio) signal plus I had a good water methanol injeciton system that I could pull a signal from as well. You only need one WBO2 sensor mounted just after the Y-pipe collector. Some people put one on each bank and you could do that. Not sure you'll gain much. My WBO2 system supports two oxygen sensors and will provide two discrete AFR signals but I just used one. Once you do your logging, just connect the Trinity to a PC and download the logs so you can send them to Johan. Your original stock Mopar tune might be (should be?) stored in the trinity as a backup and he should also be able to guide you through pulling it out so you can send it to him as a basis for the new tune. He's probably a better bet than Will since you have a Trinity. He used to work at Diablosport and is the one who wrote the original crawler tune that comes with the Trinity. Ive never worked with Will but know that he's done a lot of Pentastar work.

I don't remember what brand of WBO2 that I have but I can go dig it out later. Its a good one. I don't leave it plugged in full time, only when I'm tuning. You need to have a bung welded to your exhaust for the sensor. I ordered the bung with a plug so I could also remove the sensor and plug it off when I'm not tuning. I don't drive around with the Trinity, though I did for a while when I was running methanol. I was watching the short term and long term knock retard like a hawk because I had the ignition timing cranked way up and didn't want detonation.

You may indeed have a tune issue if multiple tuners are telling you that. The reason I now suspect that as well is becauase you said you have a 2014 and I'm pretty sure that the Jeep Wrangler 3.6 did not get EGR until the Pentastar update that the Wrangler first got with the JL. Without looking at mine, I am pretty sure that you shouldn't be showing an EGR monitor at all - maybe it should be listed as N/A. The older 3.8 JKs had EGR but I thikn that was the only JK. Johan may be able to tell if you have a bunk tune if you send him the tune file.

I still run a custom tune from Johan today. It is a 91 octane tune and works well. I swapped out my lower manifold to the JL manifold and have a K&N intake. I also took the time to index my spark plugs. I also replaced the ignition coils with MSD coils.
 

Attachments

1 - 8 of 8 Posts
Top