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2012 jEEP srt8 Flashed ECU WOW!!

51K views 132 replies 37 participants last post by  hirsch21n 
#1 · (Edited)
I got it from B&G turns off ECO/MDS.Firmer shifts,Raised rev limit,Turns off torque management,No more bog.I ordered an extra ECU for the swap.I posted a video at the bottom ,Any questions??





http://www.youtube.com/watch?v=_IL3a-KTHbY
 
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#37 ·
Besides buying the PCM and tune there is a lot more going on behind the scenes, hence their price. The PCM needs to be setup with other stuff before flashing the b&g tune. At least that's my understanding after reading on challengertalk and talking with Red Baron.


Sent from my iPhone 4S
 
#38 ·
true...but I dont need to pay for a new PCM. That was my only point. So Ill pay $400 for programming and only $115 for pcm


Invite red baron here
 
#41 ·
Chad...I dont think your situation with losing your tranny while tracking your Jeep has anything to do with this situation.
 
#42 ·
Mongoose was concerned with torque management being reduced and losing his trans and I am saying you can destroy your trans being pretty much stock. Whether that is from torque management or other things, who knows but it happened to a relatively stock vehicle.
 
#45 ·
Got it installed and here is my impression.
It is close to 100 degrees today here in Texas. I took the Jeep out prior to ECU swap and did multiple 0-60 launches per EVIC and the best I could get was 5.5. Best ever on this Jeep per EVIC was 4.5 but it was in the 30's then. Anyway after ECU swap I did several more 0-60 pulls and was down to 5.2 seconds. Now this was on the same stretch of road and only a few minutes after running it with stock ECU so there is definitely a performance gain off the bottom. Now I am not getting rubber hitting second but it definitely feels snappier and shifts better. It feels considerably better from 50-90. To me there is more of a difference on the top end but it is really hard to get a great read on the bottom end in this heat.

Is it worth the money? To me it is. I have been waiting since the day I got it modify it. Will post more after further impressions.
 
#46 ·
Delta Victor, Yeah the 3 digit heat will kill the Hemi's performance, you will see more improvments once you put some miles on it, also once the heat drops it will get better also, nice to see the EVIC a/b comparision betweeb the 2 in that heat also shows it is putting down more power..
 
#51 ·
Delta Victor, Yeah the 3 digit heat will kill the Hemi's performance, you will see more improvments once you put some miles on it, also once the heat drops it will get better also, nice to see the EVIC a/b comparision betweeb the 2 in that heat also shows it is putting down more power..



Sorry to wander off the topic, but this is a good time to ask.

When does the WK2 start "loosening" up as far a mileage goes? Many people have said their rig got faster after 3K+ miles....is this right?

Is the computer limiting the engine until so many miles or so many miles under a load?

Heck, I have been stuck in 104-108 degree temps for 2.5 months, so I havent even bothered trying to have some fun.


Thanks
 
#49 · (Edited)
Delta vector, You will also notice the trans shifting will also improve and become even more crips once you put some miles on the vehicle. The pcm is still learning the adaptives along with the TCM relearning based on the Torque output not being restricted by Torque managment. Also your going to love the No MDS/ECO Mode ..
 
#50 ·
Not that you really care but have you done any highway miles to see how much more fuel it burns without MDS?

I Know, it's sacrilege to talk about fuel mileage but I'm wondering just how much gain we really get for all the pain of MDS.
 
#54 ·
Sounds like a worthy investment. I hope everybody's trans lasts though. I guess I will wait it out and see who has issues, if any. I would still like to see some dyno number differences though, just to see. Track numbers should be a lot better too, especially since 0-60 dropped .3 seconds...
 
#58 · (Edited)
Guy's, The calibration works things that are not Performance needed are removed, like MDS/ECO Mode/Torque managment/cooler fan operation/ETC remap/etc/provisions for performance upgrades without check engine lights... Alot of the refinments within the calibration are features that you will not see from 0-60, 1/4 mile and or Dyno, But you will feel a definite difference with driveability. The bottom line is that the calibration makes the vehicle drive and perform better. If you want a ECO/MDS Friendly gas saving grocery getter leave it stock. I would have to say, these guy's that have installed and are seeing improvments on there EVIC doing back to back testing in 100 degree heat, and are seeing good time drops, I would love to see the results when the temps get cooler..How about a Cash Payout for the first 2012 SRT8 Jeep to break the 4.0 - 0-60 mark with the performance tune.
 
#61 ·
Guy's, The calibration works things that are not Performance needed are removed, like MDS/ECO Mode/Torque managment/cooler fan operation/ETC remap/etc/provisions for performance upgrades without check engine lights... Alot of the refinments within the calibration are features that you will not see from 0-60, 1/4 mile and or Dyno, But you will feel a definite difference with driveability. The bottom line is that the calibration makes the vehicle drive and perform better. If you want a ECO/MDS Friendly gas saving grocery getter leave it stock. I would have to say, these guy's that have installed and are seeing improvments on there EVIC doing back to back testing in 100 degree heat, and are seeing good time drops, I would love to see the results when the temps get cooler..How about a Cash Payout for the first 2012 SRT8 Jeep to break the 4.0 - 0-60 mark with the performance tune.
While I agree completely with the intent of the programming but to dismiss wanting to know the effect on fuel economy as desiring a fuel friendly grocery getter is a bit of an insult. No one here bought their SRT8 expecting stellar fuel economy but it's perfectly understandable that someone would want to know the ENTIRE effect the programming has. It doesn't make me less of an enthusiast to what to know what I can expect for fuel economy.

People may be pleasantly surprised, I've had performance tunes improve MPG for steady state cruising and it would be a great selling point to be able to point to that.
 
#59 ·
Do u guys think a similar setup can be done.on the 2011+ nonSRT grand cherokee/durangos. Dave....if your watching this...can you do 3.6 and 5.7's?
 
#62 · (Edited)
Sorry did not mean to insult anyone, just get frustrated sometimes when everyone only cares about a Dyno Queen, coming from the calibration world within Chrysler, if all I did was worry about a WOT run, it wouldn't take months/hundreds of hours and let alone the man power to complete a single calibration. Most people have no idea about the benifits of a modified calibration and the driveabilty improvments.. And yes Mileage should be better because of the fuel curve being leaned out for better A/F at WOT, so with MDS/ECO mode being turned off and the improvemnt in A/F mileage should not be greatly effected..
 
#63 ·
+1

I understand your frustration, the fixation on Dyno's is almost comical and I can see how that frustration bleeds over to concerns over MPG. I'm not concerned, just interested. Performance is about making the motor as efficient as possible. Done right, a performance calibration should improve performance, driveability AND efficiency :thumbsup:
 
#64 · (Edited)
MJW930, Back on the mileage, with the remap of the ecu fuel/timing/etc,, You will not be in the throttle as hard as you would prevoius the tune, which again will help with MPG, Also the cold start fuel curve is leaned out which will also help..But again maybe one of the current fourm members running the tuned PCM can do a mileage check to verify +/- numbers over stock..
 
#65 ·
Id also like to know what sort of effect the tune has on MPG. Im used to around 14MPG city and 18MPG highway... Try and let us know if possible. Im just curious if its making that much of a difference.
 
#70 ·
Here's another 5.7 WK2 owner interested in a tune. A dedicated thread should be started in our forum - interest will be high.
 
#71 · (Edited)
To echo the sentiments of 2006Snake, I can tell you from playing around with a few older Hemis (especially the 6.1) that most of the improvements from stock to a flashed PCM come not from adding timing, etc etc, but rather turning off various TM bits,OL delays, MDS/EGR etc etc etc. There is only so much fuel and timing you can add to a calibration.

Those who insist on "dyno proof" are likely going to be disappointed, regardless of who the calibrator is or what they are calibrating with. In the war for more HP out of the box, the engineers from the factories for various manufacturers are leaving less and less on the table as far as fuel and spark, but more in the area of TM/emissions-related features.

I'm very interested in the results of this thread, alot of my customers with ported TBs have been looking for tunes in a bad way.
 
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