XJSman89
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Post by XJSman89 on Jan 16, 2013 16:37:46 GMT -6
Excellent, thanks! I'll put this up in the stickies for reference, the topic of where to tune something comes up often. Its good to know there's another place where we can get it done. When/if someone sends a PCM over to Alex they should leave a review here in this thread for other ACNAers.
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Post by shelbyracing on Jan 16, 2013 19:16:39 GMT -6
I will probably be using these guys.
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Post by renaldo0613 on Jan 16, 2013 20:55:15 GMT -6
Other than speed limiter, vats removal, what else would u guys suggest getting done to the PCM?? Explain in detail please. Im really curious because im seriously thinking about getting this done in the next couple of weeks. Like the torque management im not sure how that would benifit us.
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Randy T.
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☯ AURORA GXP ☯
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Post by Randy T. on Jan 16, 2013 21:04:01 GMT -6
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Post by renaldo0613 on Jan 16, 2013 21:28:29 GMT -6
I went to the website and read up on some things. My question is if we got the torque management tuned how would that benifit??
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Post by shelbyracing on Jan 16, 2013 21:43:44 GMT -6
I believe if you create a lot of calculated torque to the trans (gear shifts esp) it will reduce the outputted, ensuring a longer life of your transmission internals. I've felt it come on before, mainly coming out of first it made me feel like I was running out of gas. I believe it softens shifts too, but I'm not positive.
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Post by renaldo0613 on Jan 16, 2013 21:55:09 GMT -6
I believe if you create a lot of calculated torque to the trans (gear shifts esp) it will reduce the outputted, ensuring a longer life of your transmission internals. I've felt it come on before, mainly coming out of first it made me feel like I was running out of gas. I believe it softens shifts too, but I'm not positive. Thanks. Im doing some research on it now to help get answers. In lame mans term it seems to be something that reduces engine power as the transmision shifts threw gears. |
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Post by renaldo0613 on Jan 16, 2013 22:23:00 GMT -6
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Post by scottyaurorav8 on Jan 17, 2013 0:29:55 GMT -6
Yea I'd love to get tuning done as well, but i feel like it be a waste of money unless I make an engine modification so that I would actually need a tuned PCM. Alex stated there isnt much gains over what the factory set the Aurora with. I'd love to get some CHRFAB cams installed in the engine and then get a tune so it would run correctly without throwing a engine light. I know the cost of a cam swap must be outrageous on engines like ours, but the extra horses would be nice, in addition to the badass loping sound the cam would make on a sleeper like car. I just wouldnt know which cams would be effective. CHRFAB doesn't help worth a darn because they don't deal with anything except sandrails. Theres gotta be a cam of theirs that would wake up our AURORA engines.!!!
As far as Torque Management, according to that link Renaldo posted, I don't think I'd want that eliminated. Although it robs power, with it removed it seems it would kill the transmission alot sooner...and that would be horrible. This is no cheap car for parts.
Basically your looking at a tune on a stock Aurora to be a fuel/air ratio change which would lean the car out slightly and gain a few horses. The fan settings can be changed to have the engine run cooler I suppose, but this engine is way more complicated than my supercharged grand prix GTP or regal GS were....with those cars they made 180, 170 and 160 Tstats you could simply swap then get the pcm adjusted for the new Tstat. With this Northstar engine, I never heard of any aftermarket Tstats you can swap. Plus I remember hearing how this engine is specifically designed to the "T" for the temperature it shows and any changes would destroy the engine. Any input on that?
As far as changing the shift points, skip shifts etc.... I'd be concerned about the transmission life....the 4T80E isnt really the strongest transmission.....SO I guess the only thing left would be a speed limiter removed.
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Post by shelbyracing on Jan 17, 2013 7:33:53 GMT -6
I've actually only ever heard of solenoid problems with these transmissions, they were rated for a 8,000lb vehicle and it takes quite a bit of torque to move 8k lbs constantly.
Also, I have vin 9 cams in mine and it runs pretty great. I can still feel it building power when it shifts however (tune needed). You can see it getting faster in my vids too the farther the rpm needle sinks. I haven't noticed any hinder of torque at low end.
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Randy T.
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☯ AURORA GXP ☯
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Post by Randy T. on Jan 17, 2013 7:34:33 GMT -6
I would not underestimate our transmissions, I am sure they can handle anything you throw at them, especially if you change the side cover pump filter. The filters in the bottom pan are just screens, the real filters are in the side cover. There are lower temp thermostats you can put in your motor. You can also completely disable the torque management yourself by simply unplugging a sensor, maf or map possibly, I don't recall, some Auroras do not respond very well to the change. aurorah.proboards.com/index.cgi?board=Zoom&action=display&thread=11342 |
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Post by Marc on Jan 17, 2013 9:08:41 GMT -6
I think that if you disconnect the MAP sensor, torque management is disabled. But the check engine light will turn on.
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Post by wireless on Jan 17, 2013 10:51:52 GMT -6
Get a tune, you can always have it changed later, lol.
Also, 4T80E transmissions are very strong.
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Post by sall on Jan 17, 2013 10:54:05 GMT -6
Have what changed?
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Post by wireless on Jan 17, 2013 11:42:25 GMT -6
the tune lol
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Post by sall on Jan 17, 2013 13:02:31 GMT -6
Not after 60 guys from these guys. That is why mail order only tunes only suck. Maybe in another ten years someone will give up the secret to VDF and calibration. I would rather be able to it myself lol.
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XJSman89
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Posts: 6,309
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Post by XJSman89 on Jan 17, 2013 14:20:15 GMT -6
If someone gave up the secret they couldn't make money on it! ;D
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Post by wireless on Jan 17, 2013 15:22:59 GMT -6
If someone gave up the secret they couldn't make money on it! ;D Nonsense!  How do you think dyno tunes are done? Someone has to do the initial digging - then they sell the info. off so it can be tuned, etc. Meh. This is what should be expected for a car like this anyways.  |
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Post by scottyaurorav8 on Jan 18, 2013 1:37:02 GMT -6
Randy- I read your link to your posting. So basically you just went to autozone and purchased a 180 Tstat and put it in? Obviously no tuning has been done, so your computer isnt really coordinating with the different Tstat right? And according to your post, your car runs excellent, your seeing lower temps and your gas mileage has been normal?
Im thinking if I go with this tune, I'd get the 195 Tstat and have him change the fan settings for that....and there be no downside to this right?
How come the Aurora owner who changed his stock cams to the VIN 9 cams sees much less power off the line? Shelbyracing has VIN 9 cams in his engine and says it runs great and thats without a tune. Is there something else in that shelby motor thats not affecting it like the other guy. I mean my plan was considering changing my cams to VIN 9's and popping in the tuned PCM......My 01' Aurora comes with the same gearing as the Autobahn gearing correct....so maybe that's why i'd be fine with those cams. Did this other member who did the cam swap have different gearing....I think Shelbyracing has Autobahn gearing too right?
So basically the general concensus is to disable Torque Management as part of the tune for the PCM???
What else would be a good change....Should there even be playing around with shift changes etc...I kinda like the factory settings the way they are.....But what about skip shifts....On my supercharged regal skip shifts really woke the car up, Im guessing it be the same for the Aurora then?
So anyone considering getting a PCM tune now? I def. am. but it wont be using my stock PCM, i will buy another for it so I could always switch back.....I guess i'd be the only gineau pig for you guys? LOL
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Post by shelbyracing on Jan 18, 2013 8:05:35 GMT -6
The cams are tuned for higher hp at higher rpms. I'd read the form before I swapped motors and if he did do it he must've had standard gear ratio. I've even pulled a trailer (3k lbs(also have air springs in coil springs T'd to air shocks)) with mine up a hill and had no problems. Mine is Autobahn (3.71).
I'll be removing torque management from mine, don't believe it'll hurt too much.
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Post by Marc on Jan 18, 2013 8:53:32 GMT -6
Shelbyracing......When you were towing, did you have an external trans cooler?
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Post by scottyaurorav8 on Jan 18, 2013 10:11:30 GMT -6
yea I believe the 2G Auroras 4.0s all come with the 3.71 gearing, so I should be good then. Do you find that the shelby engine lopes more than the stock engine?
Now I just needa see the cost of a job like this...
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Post by shelbyracing on Jan 18, 2013 10:31:47 GMT -6
Marc- I don't have external trans cooler. I did think about it but car stayed at 200-220 towing. I have the low speed fan relay activated by fuel pump and high speed by low speed control.
Scotty- yes I noticed a different lope and it sings a different tune as well.
Sent from my HTC One X using proboards
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Post by devwille on Jan 7, 2017 16:36:58 GMT -6
I see this is an old subject, but it is the only discussion I have found. Has anyone completed the reprograming with PCMPerformance? I have the 2000 Northstar 4.6 and 4t80e in my project without traction control hardware or any other modules. I am looking to get this traction control removed due to severe power drops and loss of first gear launches. I am also looking for stiffer shifting. I used Madtuner for initial programing but he no longer tunes. I need to go faster!!  |
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Post by sall on Jan 7, 2017 16:54:58 GMT -6
I see this is an old subject, but it is the only discussion I have found. Has anyone completed the reprograming with PCMPerformance? I have the 2000 Northstar 4.6 and 4t80e in my project without traction control hardware or any other modules. I am looking to get this traction control removed due to severe power drops and loss of first gear launches. I am also looking for stiffer shifting. I used Madtuner for initial programing but he no longer tunes. I need to go faster!! Have a chat with Jake from Northstar Performance. He is tuning PCMs now and is very knowledgeable about the platform. |
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How do you think dyno tunes are done? Someone has to do the initial digging - then they sell the info. off so it can be tuned, etc.
