Decided to supercharge over a swappina to a Hemi

[Flyin6]

HP Tuners, most likely. Then just set all the tables so the engine doesn't kill itself.

Exactly!

Process is:
Send the ECM to HP tuners
Get an unlocked ECM back from the postman
Reinstall and use the supplied communicator (for lack of a better descriptor) to download the RIPP tune.
Install the supercharger
Drive it or
Get it dyno-tuned.
Luckily, I have a good tuner with a dyno nearby. He will get the thing running as well as it could.

He tuned my supercharged Suburban in the past, and it never grenaded, pushing 12 psi into an 11.5 compression ratio motor.

He tunes to keep the motors safe and only goes for max power for the racers.

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[Vtur]

Man. Sounds like the diesel would've meets your requirements without going through the hassles.

 

[Flyin6]

Man. Sounds like the diesel would've meets your requirements without going through the hassles.

It absolutely would have.
But that was then and not now...

 

[ChrisNLA]

Exactly!

Process is:
Send the ECM to HP tuners
Get an unlocked ECM back from the postman
Reinstall and use the supplied communicator (for lack of a better descriptor) to download the RIPP tune.
Install the supercharger
Drive it or
Get it dyno-tuned.
Luckily, I have a good tuner with a dyno nearby. He will get the thing running as well as it could.

He tuned my supercharged Suburban in the past, and it never grenaded, pushing 12 psi into an 11.5 compression ratio motor.

He tunes to keep the motors safe and only goes for max power for the racers.

We have a guy an hour away that does all of our performance tuning. Usually turbo'd V8s for my friends. I do have an HP Tuners MPVI3 dongle though, so I can load tunes remotely and I also use it myself on my Camaro and my LS swapped truck when I need to do my own adjustments to things.

 

[NC_Overland]

I can’t imagine supercharging a 3.6l. I worry about mine staying together in stock form. Good luck. I mean it.

 

[Hootbro]

Just my 2 cents, but I think the AMW option is the more mature of the two. While not scientific or data reproduceable by any means, just appears in my perception that AMW conversion owners are more satisfied than I have seen of those that went to some forced induction option with the current 3.6L Pentastar. Latter just seems like a more fiddly setup with a few just giving up, removing and selling off the parts.

 

[JTdiRtyD]

Just my 2 cents, but I think the AMW option is the more mature of the two. While not scientific or data reproduceable by any means, just appears in my perception that AMW conversion owners are more satisfied than I have seen of those that went to some forced induction option with the current 3.6L Pentastar. Latter just seems like a more fiddly setup with a few just giving up, removing and selling off the parts.

I must agree here. Adding F/I to a N/A platform usually ends up with them being bit finicky and prone to issues when anything gets close to those tuning left and right limits. I remember my G35 ran like utter shit unless I ran pump 93 or a really good quality 91. That became difficult in a lot of rural areas. A 5.7 swap is still going to take tuning, but it has far more tolerance.

I know AMW has a waiting period, but from everything I've seen and heard it's well worth the wait. While I don't think the SC route is bad, I do think it's going to require a lot of tinkering and re-addressing things along the way. Plus boost generates heat, and the cooling systems in these are already inadequate and difficult to improve. A 5.7 swap is far more likely to be a "set it and forget it" solution, and I think the power you will get will be smoother, more usable and more efficient.

 

[ShadowsPapa]

I must agree here. Adding F/I to a N/A platform usually ends up with them being bit finicky and prone to issues when anything gets close to those tuning left and right limits. I remember my G35 ran like utter shit unless I ran pump 93 or a really good quality 91. That became difficult in a lot of rural areas. A 5.7 swap is still going to take tuning, but it has far more tolerance.

I know AMW has a waiting period, but from everything I've seen and heard it's well worth the wait. While I don't think the SC route is bad, I do think it's going to require a lot of tinkering and re-addressing things along the way. Plus boost generates heat, and the cooling systems in these are already inadequate and difficult to improve. A 5.7 swap is far more likely to be a "set it and forget it" solution, and I think the power you will get will be smoother, more usable and more efficient.

The V8 generates more heat than the 3.6 as well.
So if you really use that HP and load it up, even that can be an issue.
Look at the towing limits in the JLU for example.

Interesting how a "I am doing this" thread turns into a pick it apart thing.

 

[AbyssOffroad]

Regardless of anyone else's opinions - hope it does what you are looking for! Please post videos of supercharger noises once installed.

 

[ChrisNLA]

Just my 2 cents, but I think the AMW option is the more mature of the two. While not scientific or data reproduceable by any means, just appears in my perception that AMW conversion owners are more satisfied than I have seen of those that went to some forced induction option with the current 3.6L Pentastar. Latter just seems like a more fiddly setup with a few just giving up, removing and selling off the parts.

Purely anecdotal, but some friends of mine took a trip to Moab a couple years ago, and one rig with them was a JK with a supercharger (a relatively well built rig) that ended up being problematic and sitting out some days of the trip. The fuel consumption posed an issue on some trails, and they had other odd and end issues like blown cold side couplings and then at one point trying to find a replacement serpentine belt that would work.

I do not think superchargers are inherently unreliable - but I do think in this particular application I would spend a lot of time vetting the install after completion to make sure its solid, and being intimately familiar with all of the additional failure points that have been introduced - and then keeping a spare serpentine belt or two on hand in the truck (for example).

 

[JTdiRtyD]

The V8 generates more heat than the 3.6 as well.
So if you really use that HP and load it up, even that can be an issue.
Look at the towing limits in the JLU for example.

Interesting how a "I am doing this" thread turns into a pick it apart thing.

I haven't been picking it apart, I was actually defending it earlier in this thread, I was simply stating overall I feel the 5.7 would be a more reliable option with less to go wrong.

 

[Sandman 4x4]

I think this is more the product of the 8-speed transmission, so many overdrive gears, and a vehicle shaped like a brick. Like, it's not hunting gears because it can't maintain speed in a gear but because it can't maintain speed as optimally as it could in the lower gear (thinking fuel economy). It's not like a 90's 4-speed that's shifting off vacuum (though I'd imagine that's in the calculation somewhere?). I'd be curious what a remap of the shift points and/or programming of the TCM would do.

Supercharger will get you up to speed, but at cruise I doubt the difference would be that great?

Could be wrong.

You bring up a valid point, but there’s a very easy, factory designed an engineered work around that works fine for me in my stock Gladiator. That’s to use the manual side of the shift, that will prevent constant downshifting. I can only imagine how that would work with a supercharger adding power at lower rpm’s. Not to the point of lugging at deep throttle positions no, because any more than 2/3rds to 3/4 throttle the computer will downshift as many gears as it’s told. That when stock really brings up the rpm’s! Can’t imagine what that would do with a supercharger adding pressure. But adding an extra 100 rwhp at half throttle would be a game changer. While not demanding too much.

 

[tom.mary.glad]

"valve train not made of cheese....." LMAO!

 

[ShadowsPapa]

I haven't been picking it apart, I was actually defending it earlier in this thread, I was simply stating overall I feel the 5.7 would be a more reliable option with less to go wrong.

That much is true. Me, I generally choose the road less traveled and those successes are far better than what everyone else is doing. If his goal is just a mild gain, I'd bet on his success.

 

[Jrgunn5150]

I, personally, just don't want to put premium in anything.

Not only is it expensive AF, it limits where I can go around the UP when there's only 1 station in a 40 mile radius and it only sells rec fuel and 87.

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