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Post by shelbyracing on Jan 10, 2012 8:30:46 GMT -6
So I've been wanting mine tuned for a long time now. I have a Shelby Engine with the cams, true dual 2.5" exhaust, CAI (Tested with sensor scanner), I've got it running through factory oil cooler, and friction modifying oil (better than Royal Purple in friction test comparison.
Molybdenum disulfide chemically adheres to metallic structures with heat so it's like armor for your engine. Penetro is another friction modifier in the oil I use. Mainly to prevent spinning a bearing after seeing what happened to the old engine I'm a cautious man.
Anyway I believe I have the flow to allow 7,500 rpm's. Springs should hold up fine. I'm not rich, I'm actually pretty poor and laid off now, so I'm hoping to be able to tune this for a affordable price. Rpm limit, and tune for the cams. As well as change speed limiter to.. 155 or so. Hitting 135 is not that difficult.
Also can you control what the power button on the shifter does? It would be nice if that was able to revert the rpm limit to 5k or so turned off. People get over excited driving my car. So I don't allow it often.
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Post by shelbyracing on Jan 10, 2012 8:39:49 GMT -6
Mine is a 97, and I live in KY, not too far from SC. I would rather not have to mail it if at all possible. I need my car.
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Post by caleditor on Jan 10, 2012 12:22:28 GMT -6
The performance button on this PCM just works the trans
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Post by shelbyracing on Jan 10, 2012 12:35:23 GMT -6
Yes, I am wondering if you can make the button change the shift points, as now it appears to have no effect.
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Post by caleditor on Jan 10, 2012 15:01:12 GMT -6
What kind of cams?
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Post by shelbyracing on Jan 10, 2012 19:07:05 GMT -6
Vin 9
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Post by shelbyracing on Jan 10, 2012 19:13:01 GMT -6
I was at first disappointed to see socket marks on the water pump belt housing. It looked like w light duty impact was on them. Then I found out that Shelby's workers changed the cams and felt relieved.
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Post by caleditor on Jan 10, 2012 19:16:24 GMT -6
out of all of the engine that I have had any part of less than 5 have had the cams installed. The rest still had the original cams. I have been told that they were swapping them in as needed. All of the closed up crate have been the 4.0L cams. I have seen/ heard of 2 engines that were used engines from the auction with the 9 cams and I have seen/heard of 2 others that were new with the cams and the rest have --- Well I have been the bubble burster
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Post by caleditor on Jan 10, 2012 19:17:25 GMT -6
Did you pull the valve cover and check?
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Post by shelbyracing on Jan 10, 2012 20:23:22 GMT -6
I thought about it just to see the numbers, but having the same set up as before I swapped engines, I could here a longer lobe. And it feels like a rocket in comparison in higher rpm's. It takes off differently. I really don't want to pull the cam pulley unnecessarily either. It's like encouraging something to go wrong when everything is great.
A little fyi, I've never heard anyone else mention is upon swapping motors I had to change the cam position sensor because it was totally different.
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Post by shelbyracing on Jan 10, 2012 20:27:26 GMT -6
Mine had to be crated by the seller, he didn't do a very professional job, but it worked. Would you think it necessary to pull the cover? I smoked my buddies stock Aurora who had 24k miles.
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Post by caleditor on Jan 10, 2012 20:54:19 GMT -6
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Post by caleditor on Jan 10, 2012 20:55:28 GMT -6
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Post by shelbyracing on Jan 10, 2012 22:09:49 GMT -6
The brass bearing for Tue manual trans was installed in my crank, but it had no fly wheel. It's possible to pull rear with engine installed?
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Randy T.
Administrator 
☯ AURORA GXP ☯
Posts: 3,758
Staff Member
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Post by Randy T. on Jan 11, 2012 7:42:15 GMT -6
The front cover is easy to pull, takes a $15 tool from harbor freight, you can also rent it at most part stores. $500 Mac pulley kit won't do it, lol.
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Post by shelbyracing on Jan 11, 2012 9:06:30 GMT -6
I have a puller, I just didn't want to pull the pulley. I might though when weather is a little better. It's pretty cold here the next several days.
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Post by andy2003si on Jan 22, 2012 16:01:14 GMT -6
Do you have autobahn gears, if so you can put in a (guessing you're 96+/obd2 because obd1's I hear are fairly easy to tune) grab a 96+ Cadillac Seville STS PCM (STS only not SLS) or 96+ Cadillac Eldorado ETC (ETC ONLY, not base) not sure if you need the TCM too. (However i'm not sure about a 98+ Seville STS PCM/TCM as I know their tranny is performance algorithm and don't know if that feature comes from just the change in the modules , but I believe there is also a few sensors in the car that regulate the perf. algorithm shifts? And also with the autobahn gears of course you gain more acceleration and especially with your shelby motor and the new PCM won't drop your RPM's as much between shifts and further out of the powerband (especially with the shelby that has a higher peak rpm).
I know you'd like it tuned but for now I think the STS/ETC provides a bit longer injector pulse width/more fuel, but most of all I remember you complaining in a previous post that your shifting at highest 6000 which the shelby peaks at about 1000 RPM more then that so the STS/ETC PCM will definately give you a giant increase in speed; for example if you dyno'd your shelby on the dyno graph at 6000 your probably making 20-50 horsepower less then at 6600 RPM, so it'll actually feel when your in those rpms as if you gained horsepower but truth is your just actually taking advantage of the engines true PEAK power. And it must be important with the different cams, the same the 300 HP Northstar uses which after all they made the STS/ETC PCM raise it's shiftpoints, which means if it didn't have an advantage why would they of done it and in the shelby which even peaks even higher making it even MORE important.
However if you don't have the autobahn gears/3.77 gears I suggest swapping them in just for the fact of you'll be able to put the 300 HP n* PCM/ECU in your car, switch redlines at I believe 6700 (vs I think 6300), and shifts at around 6500 RPM at WOT (vs the standard auroras WOT shifts at around 6100 max in performance mode)
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Post by shelbyracing on Jan 22, 2012 19:04:29 GMT -6
I started a thread on that topic before but still wasn't sure. I think I will do that for now. I completely agree, and yes mine is autobahn.
So a few questions before I do this.
What years would be compatible? Mine's 97.
What is STS top speed?
And I know it's a stupid question but I'd rather be sure. What digit in the vin determines the cams?
Also, is it the computer over the driver side tire?
If 2 people have the same idea, it might be a good idea, lol. I'm going to try this in the next few weeks.
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Post by shelbyracing on Jan 22, 2012 19:06:36 GMT -6
Maybe after I get my house finished I'll get it dyno-tuned.
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Post by caleditor on Jan 23, 2012 8:44:09 GMT -6
Do you have autobahn gears, if so you can put in a (guessing you're 96+/obd2 because obd1's I hear are fairly easy to tune) grab a 96+ Cadillac Seville STS PCM (STS only not SLS) or 96+ Cadillac Eldorado ETC (ETC ONLY, not base) not sure if you need the TCM too. (However i'm not sure about a 98+ Seville STS PCM/TCM as I know their tranny is performance algorithm and don't know if that feature comes from just the change in the modules , but I believe there is also a few sensors in the car that regulate the perf. algorithm shifts? And also with the autobahn gears of course you gain more acceleration and especially with your shelby motor and the new PCM won't drop your RPM's as much between shifts and further out of the powerband (especially with the shelby that has a higher peak rpm). I know you'd like it tuned but for now I think the STS/ETC provides a bit longer injector pulse width/more fuel, but most of all I remember you complaining in a previous post that your shifting at highest 6000 which the shelby peaks at about 1000 RPM more then that so the STS/ETC PCM will definately give you a giant increase in speed; for example if you dyno'd your shelby on the dyno graph at 6000 your probably making 20-50 horsepower less then at 6600 RPM, so it'll actually feel when your in those rpms as if you gained horsepower but truth is your just actually taking advantage of the engines true PEAK power. And it must be important with the different cams, the same the 300 HP Northstar uses which after all they made the STS/ETC PCM raise it's shiftpoints, which means if it didn't have an advantage why would they of done it and in the shelby which even peaks even higher making it even MORE important. However if you don't have the autobahn gears/3.77 gears I suggest swapping them in just for the fact of you'll be able to put the 300 HP n* PCM/ECU in your car, switch redlines at I believe 6700 (vs I think 6300), and shifts at around 6500 RPM at WOT (vs the standard auroras WOT shifts at around 6100 max in performance mode) You can not swap PCM's between cars with out a lot of work. The Aurora's use a circuit 229 VATS and Caddy's use Class II |
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Post by shelbyracing on Jan 23, 2012 10:50:24 GMT -6
Why not? It don't they both have N* code, same sensors.. Wouldn't it just control it differently? Or is the plug different?
What is 229 VATS?
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Post by caleditor on Jan 23, 2012 11:07:42 GMT -6
The Caddy's don't have UART Data except in 1996 and the Aurora ran it upto 1999. The ABS and PCM talk to each other on UART on Aurora's.
1996 to 1999 Caddy's use a VATS signal that is on the Class II data line. Allof the cars run the old VATS with a pellet in the key except 1998 & 1999 Sevilles
Caddy's don't have a performance switch. Caddy's start in 2nd gear if the ABS is off line and if it isn't using Class II then you will be in 2nd on starts.
I can go on and on. The Aurora's are different calibrations then Caddy's
Google Circuit 229 VATS
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Post by shelbyracing on Jan 23, 2012 11:51:12 GMT -6
Isn't all that controlled by the bcm?
And are you referring to pass-key 2 as class 2?
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Post by caleditor on Jan 23, 2012 12:03:34 GMT -6
Isn't all that controlled by the bcm? And are you referring to pass-key 2 as class 2? Vehicle Anti Theft System's are not all the same. Old GM cars ran a Hard-Wire that is called Circuit 229. This circuit had a signal from a module the told the PCM to enable fuel or the starter. This signal could come from the BCM, VATS Module, or the IPC. Caddy's do not use the Fuel Enable circuit. The Caddy's send a password over the class II data line telling the PCM it's ok to start. On the 1996 to 1999 Eldo's & Devilles the IPC sends out the password. The 1996 and 1997 Sevilles also use the IPC, but the 1998 and 99 have PK3 and they have a PK3 module. These Sevilles do not use a pellet in the key. |
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Post by caleditor on Jan 23, 2012 12:09:37 GMT -6
When I biuld out a wire harness for a conversion I need to have a VIN because all of the calibrations are so different. The Pinout to the PCM's are very different. I even think the injectors are on different pins at the PCM
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Post by shelbyracing on Jan 23, 2012 22:29:35 GMT -6
So, how do I bypass it on the pk3 system. I'd love to see some benefit until next year. If I get around that it'll work, right?
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Post by shelbyracing on Jan 23, 2012 22:33:42 GMT -6
How much do you charge to tune?
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Post by caleditor on Jan 24, 2012 5:53:55 GMT -6
We build tunes for your car. We can build it as needed for any mods. Our tunes run from $250 for the limiter to $600 for a full all out tune. Our $350 tune is about the same as Santa's $529 tune
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Post by shelbyracing on Jan 24, 2012 8:53:22 GMT -6
Can you adjust torque management? I read the Aerotech ran 7,200 rpms, and that it was an Aurora engine with different cams. So do you guys think I'm safe to dyno tune it up to that point and see where it falls.
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Post by caleditor on Jan 24, 2012 9:06:42 GMT -6
Can you adjust torque management? I read the Aerotech ran 7,200 rpms, and that it was an Aurora engine with different cams. So do you guys think I'm safe to dyno tune it up to that point and see where it falls. The DHS ran 7000 to 7200 on shifts. What is your set at? |
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