Supercharged 3.8 vs. 3.6 - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 30 Old 08-08-2012, 10:45 AM Thread Starter
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Supercharged 3.8 vs. 3.6

Has anyone tested a Supercharged 3.8 vs. the 3.6? I can't seem to find any real world info. I am trying to decide if I want to trade my '11 for a '13 or consider a Supercharger.

Thanks
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post #2 of 30 Old 08-08-2012, 10:49 AM
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i would get the RIPP supercharger .. i think you would be very happy but yeah im sure someone can comment that has compared them. i would think they would be pretty close
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post #3 of 30 Old 08-08-2012, 11:54 AM
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I have an Avenger SC, 5.13s and 37" MTRs on a set of Walkers.

I drove with a friend in his 2012 that was bone stock up I70. It wasnt a rubi so I am guessing 3.73s.

Was it impressive? Compared to what my Rubi used to do up that same road, yes it was very impressive.

With that said, I am extremely confident that my Jeep in its current configuration with the Avenger and bigger tires will completely man handle a stock 2012.

Just my opinion though...
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post #4 of 30 Old 08-08-2012, 02:06 PM
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I would look into all your options if you go supercharger. I installed a ripp on a guys jeep a few months ago and though it did help a good bit it didn't really come on until higher in the rpm range. There are a couple of other options that have come out recently that I think would be worth looking into.
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post #5 of 30 Old 08-08-2012, 03:40 PM
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A super charger generally gives a 40% increase in power.
A 2012 already has 40% more hp and has a warranty.

You never get your money back for mods, and you WILL lose your warranty on your engine and possibly the rest of the drivetrain with the SC.

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post #6 of 30 Old 08-08-2012, 03:45 PM
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Quote:
Originally Posted by Rumbloki View Post
A super charger generally gives a 40% increase in power.
A 2012 already has 40% more hp and has a warranty.

You never get your money back for mods, and you WILL lose your warranty on your engine and possibly the rest of the drivetrain with the SC.
55% increase with the Avenger kit.

Warranty really depends on the dealer. My dealer has been honoring mine thus far.

You are correct in that you dont get your money back in mods but he will also lose money on the trade in. If he already has mods done to his current JK that cant be transfered, well then there is an additional loss.

You would really have to do the math on a case by case basis to see what the best choice is.
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post #7 of 30 Old 08-08-2012, 04:10 PM
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Get the 3.6, save up the $$$ while RIPP is finalizing the SC for the 3.6 and spank anyone without a V8! Just expressing my future plans.... Good luck!
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post #8 of 30 Old 08-08-2012, 04:15 PM
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post #9 of 30 Old 08-08-2012, 04:54 PM
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Quote:
Originally Posted by Rumbloki View Post
A super charger generally gives a 40% increase in power.
A 2012 already has 40% more hp and has a warranty.

You never get your money back for mods, and you WILL lose your warranty on your engine and possibly the rest of the drivetrain with the SC.
warranty... well you just have to find a mod friendly dealership... ive never had any issues with warranty and thats with it supercharged and heavy mods.. just depends where you go.. i would keep what you have and super charge it...
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post #10 of 30 Old 08-08-2012, 05:27 PM
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I'm keeping my 2010. Fuck another payment.

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post #11 of 30 Old 08-08-2012, 05:57 PM
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Quote:
Originally Posted by ALASHA View Post
Warranty really depends on the dealer. My dealer has been honoring mine thus far.
Quote:
Originally Posted by block View Post
warranty... well you just have to find a mod friendly dealership... ive never had any issues with warranty and thats with it supercharged and heavy mods.. just depends where you go.. i would keep what you have and super charge it...
Have you guys had an engine replaced?


Quote:
Originally Posted by ALASHA View Post
You are correct in that you dont get your money back in mods but he will also lose money on the trade in. If he already has mods done to his current JK that cant be transfered, well then there is an additional loss.

You would really have to do the math on a case by case basis to see what the best choice is.
I totally agree.

On edit: The SC 3.8 will also consume more fuel than the 3.6.

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old rig - 2012 Rubicon - RK 2.5", 35" KM2s on 15" MB72s, Engo E9000 on Smittybilt SRC, Bestop Trektop NX

Last edited by Rumbloki; 08-08-2012 at 06:00 PM.
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post #12 of 30 Old 08-08-2012, 06:01 PM
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The 2012 has some growing pains with the engine ticking problems. I'd wait for the 2013. Never buy the A-model of anything.

I have the RIPP SC on my 08 3.8L, and it made a night & day difference. I'm happy with it, and not worried about warranty issues. It's past the 36,000 mile mark, and getting a dealer to honor the Lifetime Warranty...I'll just fix it myself.
As for losing the warranty with the SC, simply remove it (probably take about 2-3 hours) before you take it to the dealer if it is a major maintenance issue.

I have no intention of ever selling my Jeep, so no worries about resale value...Mod away!

2008 JK Rubi on big tires and stuff, RIPP supercharger.
Various dents and scratches.

Last edited by Acey; 08-08-2012 at 06:04 PM.
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post #13 of 30 Old 08-08-2012, 06:26 PM
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I 'raced' a two door 2012 (i run avenger supercharger on my rubicon unlimited).
We were about even off the line and he was faster to 60 mph. Haven't had an opportunity to check out a 2012 with 37's and armour.
It wasn't a true balls out race, the guy just wanted to see if his was faster.

I am a troll. Do not take my advice. It isn't going to help.
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post #14 of 30 Old 08-08-2012, 06:47 PM
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There is alot of potential out there in V6 world and the 3.6 Pentastar is NOT it, sorry. You want to feel what V6 potential is, I hate to admit it but try out a f150 3.5L EcoBoost. My Jeep has been in the shop for collision repair and insurance rented me a 5,600lb Ford F150 EcoBoost. I have had this Ford for 3 weeks and I gotta tell you this little V6 will give the Hemi a run for its money. Twin turbo V6 putting out 385hp and 400+ftlbs of torque in a truck with a 0-60 of 6 seconds and a towing capacity of 11,000lbs. That is the kind of V6 we need in the Jeep..
Yes I have driven the 2012 3.6 a few times and I still say my programed 3.8L on premium fuel is every bit as fast and responsive as the 3.6 and still gets average 17-18 mpg on 35s.. The biggest + to the 12 is not the 3.6 but rather that 5 spd auto..
I say Supercharge the 3.8, it will probably last longer and you will be happier in the long..

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post #15 of 30 Old 08-09-2012, 06:35 AM
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Quote:
Originally Posted by Rumbloki View Post
Have you guys had an engine replaced?
Nope. Had the stupid trans line replaced at least 3 times though...
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post #16 of 30 Old 08-09-2012, 08:02 AM
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Quote:
Originally Posted by jtphoto JK View Post
There is alot of potential out there in V6 world and the 3.6 Pentastar is NOT it, sorry. You want to feel what V6 potential is, I hate to admit it but try out a f150 3.5L EcoBoost. My Jeep has been in the shop for collision repair and insurance rented me a 5,600lb Ford F150 EcoBoost. I have had this Ford for 3 weeks and I gotta tell you this little V6 will give the Hemi a run for its money. Twin turbo V6 putting out 385hp and 400+ftlbs of torque in a truck with a 0-60 of 6 seconds and a towing capacity of 11,000lbs. That is the kind of V6 we need in the Jeep..
Yes I have driven the 2012 3.6 a few times and I still say my programed 3.8L on premium fuel is every bit as fast and responsive as the 3.6 and still gets average 17-18 mpg on 35s.. The biggest + to the 12 is not the 3.6 but rather that 5 spd auto..
I say Supercharge the 3.8, it will probably last longer and you will be happier in the long..
Just a chip on your 3.8? Keeping up with the 3.6 isnt gonna happen, sorry to tell you but a chip isnt gonna net you enough power to come close. Premium fuel or not, a chip isnt a realistic major horsepower mod on a stock or relativley stock n/a motor.

Im sure if you twin turboed the 3.8 or 3.6, like the ecoboost, it would make serious power.
While the ecoboost is a good motor, it isnt anything new or ground breaking. If you were build up one of the jeep motors like the ecoboost what would be the difference?
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post #17 of 30 Old 08-09-2012, 08:23 AM
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Not the perfect comparison but---

'07 Unlimited, Ripp gen 1, Auto, 5.13's and 38's on AEV Pintler locks.

'12 2 Door, Manual, 3.73's and 37's on TWF.

The 12 completely blows my 07 away flat out up to about 4500- 5000 RPM's. Despite haveing a heavier wheel and tire setup and taller gears. In the 07's defense the slushbox sucked and the sedan is naturally heavier.

Plus, my milage went from 8/14 on the 07 to 16/22 now.


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post #18 of 30 Old 08-09-2012, 08:28 AM Thread Starter
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Not the perfect comparison but---

'07 Unlimited, Ripp gen 1, Auto, 5.13's and 38's on AEV Pintler locks.

'12 2 Door, Manual, 3.73's and 37's on TWF.

The 12 completely blows my 07 away flat out up to about 4500- 5000 RPM's. Despite haveing a heavier wheel and tire setup and taller gears. In the 07's defense the slushbox sucked and the sedan is naturally heavier.

Plus, my milage went from 8/14 on the 07 to 16/22 now.
Thanks for the info - that is what I am looking to see. Just to confirm, are you saying your mileage went from 8/14 to 16/22 after you installed the RIPP? I expected a bump, but that is pretty incredible.
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post #19 of 30 Old 08-09-2012, 08:33 AM
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Thanks for the info - that is what I am looking to see. Just to confirm, are you saying your mileage went from 8/14 to 16/22 after you installed the RIPP? I expected a bump, but that is pretty incredible.

HA HA HA ha haaaa NO!

My milage went from 10/13 to 8/14 after the Ripp. It jumped to 22.3 at 75 by going to a Pentastar.


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post #20 of 30 Old 08-09-2012, 08:35 AM
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one thing to mention is that the gen II ripp with innercooler is a lot better than the gen I
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post #21 of 30 Old 08-09-2012, 08:41 AM Thread Starter
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HA HA HA ha haaaa NO!

My milage went from 10/13 to 8/14 after the Ripp. It jumped to 22.3 at 75 by going to a Pentastar.
Thanks for the clarification - I did not want to call you out on those numbers and a turn this thread into a MPG war thread. hahaha
Do you think the city MPG dropped because your foot got heavier after the SC install?
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post #22 of 30 Old 08-09-2012, 08:44 AM
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Thanks for the clarification - I did not want to call you out on those numbers and a turn this thread into a MPG war thread. hahaha
Do you think the city MPG dropped because your foot got heavier after the SC install?
No just typical of the slow and go of in town driving. More accelerating lower fuel economy.


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post #23 of 30 Old 08-09-2012, 09:05 AM
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I will reluctantly wait for a diesel jk.I got rid of my 08 and won't buy another until we can get it with a factory diesel.Tons of power,and no warranty issues with aftermarket blowers etc.I am jonesin' bad for another jk too but I will wait.My next one will be my last one.

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post #24 of 30 Old 08-09-2012, 05:10 PM
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Just a chip on your 3.8? Keeping up with the 3.6 isnt gonna happen, sorry to tell you but a chip isnt gonna net you enough power to come close. Premium fuel or not, a chip isnt a realistic major horsepower mod on a stock or relativley stock n/a motor.

Im sure if you twin turboed the 3.8 or 3.6, like the ecoboost, it would make serious power.
While the ecoboost is a good motor, it isnt anything new or ground breaking. If you were build up one of the jeep motors like the ecoboost what would be the difference?
Check again Superchips is a computer reprogram not a chip. On premium fuel it makes more torque then the 3.6. Still shy on the Hp. Funny you should say keeping up with the 3.6, without a reprogram the computer on the 3.6 will start shutting the fuel down at around 75 mph . Unless you have driven a properly reprogrammed and geared 3.8 you'll never know.

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post #25 of 30 Old 08-09-2012, 06:40 PM
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Check again Superchips is a computer reprogram not a chip. On premium fuel it makes more torque then the 3.6. Still shy on the Hp. Funny you should say keeping up with the 3.6, without a reprogram the computer on the 3.6 will start shutting the fuel down at around 75 mph . Unless you have driven a properly reprogrammed and geared 3.8 you'll never know.
chip or reprogram,piggyback, stand alone.... they all do the same thing.
what you have is an OTS map (going off of your info)... nothing special. i HAD an 07 jk 6spd w/4.10's with an mbrp exhaust, ripp long tube headers and a CUSTOM (as custom as you get with the jk ecu) tune and my 2012 blows it away hands down. funny you say the 2012 hits fuel cut at 75mph when i just hit 90mph (yes i was speeding and no its not safe). when i recently drove to west texas where the speeds are 80mph the 3.6 had no problem doing 90+ for long periods of time. furthermore, my 2012 trapped in the upper 80's at the track and my 07 trapped upper 70's, very low 80's with the aforementioned mods. huge difference! you can compare dyno numbers all day long but a true test in a vehicles acceleration ability is at the drag strip. actual real world performance numbers dont lie....all you need to look at is the trap speed of a given vehicle, it will tell you how much power a vehicle is making.
your superchip flashpaq (assuming this is what you have) has been to tested to bring the jeep to 60 mph from a standstill about 1 second faster. taking into account that a stock 07-11 jk, depending on gearing, does 0-60mph from 9ish to 10+ seconds to 60mph. now,a bone stock 2012 has 0-60mph ranges from low 6's to mid 7's seconds. (my 1/4 mile times back that up)
are you telling me thats not a significant difference?

the reason how i can be so sure is that my very good friend has a 2010 jk with superchips flashpaq and borla exhaust and stock tires, no lift and 4.10's and he cant even keep up. from a stoplight, from a 60mph punch....it doesnt matter,he is nowhere to be found. we even switched vehicles and the results were the same.

If you think the superchips gave you 30wtq peak gain.....well, i have a bridge for sale. the 3.6 makes significantly more torque just off idle than then 3.8. however, if it really does give the 30tq gain like you said and they say, you are not comparing to the 3.6 tq numbers at the same rpm, youre comparing it to peak numbers which is wrong. you cant compare a peak number from one motor to a specific number under the curve from a completely different motor.

Of all the dynos ive seen of the superchip flashpaq, the biggest peak gain ive seen is 10-15tq and less for hp. I have yet to see a publicly posted dyno graph directly from superchips, comparing stock to stock plus flashpaq. Not saying its not out there but i havent seen it and they dont have it on their site. they just list a 21hp gain and a 30tq gain, with nothing supporting those claims. if i remember correctly ripp mods had a 20whp and 20-30wtq gain with a diablo tuner and ripps own longtube headers....which only proves that an ecu reflash alone isnt getting you what you think it is. playing dyno wars of course.

i have a almost 400whp subaru now and it barely gained a peak 30wtq with just a reflash from programer and its force fed. now when i threw on a bigger turbo and other mods and added an e85 custom map is when i saw my biggest gains but you can thank the corn fuel for that.

Last edited by awdspider; 08-09-2012 at 09:44 PM.
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