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I hope you Have a Good Rear End Specialist to do the Gearchange! They are Tough to Do Correctly! Not a Driveway Buddy Project! Ford Has Enough Problems with Noisy Rear's Out the Factory!
Since Hypertech Has Both a Speedo Device & Tuner Why Not Call Them Direct Before You Buy! Call not Text or Email! Call!
I get your Hesitation. I'm in Cal, I been to The Referee. Just Remember CARB Status Was not a Cheap Certification. They Paid Bigtime for That.
BUT, It's Always Good to Shake a Fist at BIG BROTHER!
From my understanding, you cannot make adjustments to the factory tune once the vehicle is returned to stock using the SCT hand-held tuning devices.. Therefore, if you intend on retaining the factory/stock tune? only way you'll be able to electronically change the gear ratio is by having a Ford dealership tech flash your vehicle's ECM with their software equipment
I wonder if you can download the factory tune, copy and save it with a new name, load it back to the tuner, and then modify the rear gear ratio parameter and upload it back to the car?
Yeah, the dumbed-down "rear gear adjust only" thingy might be cheaper and easier, LOL
If the factory calibration can be downloaded/redownloaded? To my knowledge, that can only be performed by a Ford dealership tech.. Perhaps Kevin (05stangkc) would be able to confirm this either way
Last edited by m05fastbackGT; 9/27/22 at 05:42 PM.
I'm Starting to Get Curious About this Hypertech Unit! I Hope Charlie Calls! He Needs to Hear it from them Firsthand. I think Siber is Sharper on Tune Questions Then Me For the Record.
I miss the Real Good Old Days! I got a Box of Speedo Gears For My Mopar Gear Changes!
Tunes were a Tune Up or Tuned! You would Use Points, Plug, Condenser, Rotor, Cap, Distributor Curve Rework. Carb Jets etc. Yep I'm a Dinosaur!
I'm an Analog Man in a Digital World!
Grooving to My 8-Tracks! Now That's what we called Tunes!
What I Really Miss is sharing it All with My Son! He loved the Old Stuff!
If the factory calibration can be downloaded/redownloaded? To my knowledge, that can only be performed by a Ford dealership tech.. Perhaps Kevin (05stangkc) would be able to confirm this either way
If I get home early enough tomorrow I will hook my Laptop up to my Stang and see if I can do gear change with ForScan. It can actually do things Fords IDS cannot do in F150's
Originally Posted by 05stangkc
I'm Starting to Get Curious About this Hypertech Unit! I Hope Charlie Calls! He Needs to Hear it from them Firsthand. I think Siber is Sharper on Tune Questions Then Me For the Record.
I miss the Real Good Old Days! I got a Box of Speedo Gears For My Mopar Gear Changes!
Tunes were a Tune Up or Tuned! You would Use Points, Plug, Condenser, Rotor, Cap, Distributor Curve Rework. Carb Jets etc. Yep I'm a Dinosaur!
I'm an Analog Man in a Digital World!
Grooving to My 8-Tracks! Now That's what we called Tunes!
What I Really Miss is sharing it All with My Son! He loved the Old Stuff!
KC
You forgot Steppenwolf The Pusher and Aerosmith Toys in the Attic
Tell the guy at the parts counter what trans gear (Color) and the color of the speedo gear, what rear gear and tire size and he handed you a new color to put on the speedo cable, it was wonderful
If the factory calibration can be downloaded/redownloaded? To my knowledge, that can only be performed by a Ford dealership tech.. Perhaps Kevin (05stangkc) would be able to confirm this either way
Yes it is standard procedure -- the first thing you do when you get a new SCT device, is download the factory tune to the device. Then you can upload the new modified tune from the device to the car; and you still have the original unmolested factory tune saved in the device. You can "revert to stock" (or whatever they call it) at any time, meaning load the factory tune back to the car; but of course the car will not run right on the factory tune, if you have mods that require a change to the tune.
But the trick here, is that the OP wants to modify the stock tune, to correct the rear gear ratio. Normally in the SCT, you can modify some parameters (including tire revolutions per mile and rear end ratio among a few others) as part of the tune loading procedure. But I have only done this in combination with a modified aftermarket tune, I am not sure if the "user parameter adjustment" or whatever it is called, is available when you flash back to stock. (I have never tried it)
You can also download/upload tune files from the device to a PC, including the original factory tune. So i was thinking that the OP could download the factory tune to the tuner, then from there to a PC; then on the PC, he could copy and rename the tune file; then load it back to the tuner as an aftermarket modified tune; and then the user adjustable parameters would be available. But not sure if there is some technicality, such as a different file type for the factory versus aftermarket tune file, that would prevent this.
So that's why I thought the dumbed-down devlce that only allows rear gear ratio change might be quicker and easier, LOL
If I get home early enough tomorrow I will hook my Laptop up to my Stang and see if I can do gear change with ForScan. It can actually do things Fords IDS cannot do in F150's
You forgot Steppenwolf The Pusher and Aerosmith Toys in the Attic
Tell the guy at the parts counter what trans gear (Color) and the color of the speedo gear, what rear gear and tire size and he handed you a new color to put on the speedo cable, it was wonderful
I could Do That. In Fact all those Calls Got Pushed off on me Back in 80'S. I was Always the Guy Who Got the It's not Stock Anymore Stuff at Least. Before I retired I was one of the Few Ford Guys That Knew how to Still operate a Microfiche! Got Two at the House, Films From Late 1950's to Early 2000's Anything 1979 and Earlier is not on Ford Dealership Parts Database!
I used to Buy 8-Tracks By the Case on Ebay when they were Dirt Cheap. Got My own Splicing Kit & Can Repair Most in a Jiffy!
On A Side Note I used Some 1970's FORD Speedo Cable Grease to Fix the Barrel Rollers Squeek on My Dryer the Other Day! That Can Just Won't Quit!
Very Nice, Our Small Group of Posters are Starting to Gel Here Lately, We All Have Stronger Area's and Weaker Area's. We are Learning to Compliment Each others Knowledge Very Good! I Appreciate That you Guys Cut Me Some Slack as Being away 10+ Years Leaves Some Holes in Some of My Knowledge. Thanks For Putting Up With Me!
I'm getting a Bit of the Early Days Vibe and That is a Good Thing. Just Wanted to Put That Out There. And We Did Disagree Back in the Glory Days For The Record. You would get the Negative Nelly From Time to Time!
At the Present I think Charlie is Resigned to getting Just the Calibrator. That's his Choice but Still I think he should Contact, Read That Phone call to Hypertech if not only Just to Get Speedo Calibrator Info. But that is up to Him!
The Last thing I want to do is Talk him into Something that may go south on him. But the Value Conscious Parts Man I am Hates to see him Sell himself Short when for $120.00 or So He can get So much More! After All everything he is Doing is For Performance! And Anytime you Can Rub Your Nose at the EPA & CARB that is a Good Thing. Intimidating Bastards!
Anyhoo, Regardless of What He Does This Information will be of Value to Future TMS Visitors. I try to Always Try to Post From that Position myself.
By All Means Lets Continue to Add Information Regardless of Direction to One Device or Another! Thanks for the Hands on Siber! And Thanks to Bert & Rocky for their Help!
Am I Making Sense?? I guess us Old Farts are Long Winded!
That's Cause we are So Full of it!
Knowledge that is! Although I know Some of Mine is Rusty!
Lmk Guys!
KC
Crap, I Never Used Emoticons Back in the Day! DOH!
Charlie Might Want to Take a Look at this old Topic!
Not to Confuse you More But Opens Other Questions about the 3.73
At The Very Least I think this Especially on an Automatic Requires the Speedometer Calibrator. So Don't Panic. Makes sense Shift Points would Be Off without Change.
Charlie Might Want to Take a Look at this old Topic!
Not to Confuse you More But Opens Other Questions about the 3.73
At The Very Least I think this Especially on an Automatic Requires the Speedometer Calibrator. So Don't Panic. Makes sense Shift Points would Be Off without Change.
WOW, thank all of you for the help! I will content both hypertech and SCT about whether their California edition tunes can be loaded without smog issues.
Also, does anyone know the break-in process well? I found some suggest driving 15 miles below 45mph and stop to wait for diff to cool down and repeat this process twice. And do a diff oil change after 500 miles.
But the technician who does my gear change only said to drive gently for a day, and it will be fine. And no need for an oil change after 500 miles.
I might send this comment twice.
When I had my 3.73 gears installed, the installer recommended "two heat cycles" which is like what you described: drive at moderate mixed speeds and loads for about half hour or so, let it cool (a couple hours at least I guess) and then repeat. But he said it's really no big deal. I don't think the fluid change is really needed; nobody does that with new cars that have new gears in them also ... so I wouldn't worry about it, but do it if it makes you feel better.
My 3.73 gears do whine a bit, I did take back to the installer and he checked and said they are as good as they can get on the install, so don't be surprised if you do end up with a bit of whine. Some people will say that they will not whine if installed correctly, others say sometimes they do whine no matter what.
Yes it is standard procedure -- the first thing you do when you get a new SCT device, is download the factory tune to the device. Then you can upload the new modified tune from the device to the car; and you still have the original unmolested factory tune saved in the device. You can "revert to stock" (or whatever they call it) at any time, meaning load the factory tune back to the car; but of course the car will not run right on the factory tune, if you have mods that require a change to the tune.
But the trick here, is that the OP wants to modify the stock tune, to correct the rear gear ratio. Normally in the SCT, you can modify some parameters (including tire revolutions per mile and rear end ratio among a few others) as part of the tune loading procedure. But I have only done this in combination with a modified aftermarket tune, I am not sure if the "user parameter adjustment" or whatever it is called, is available when you flash back to stock. (I have never tried it)
You can also download/upload tune files from the device to a PC, including the original factory tune. So i was thinking that the OP could download the factory tune to the tuner, then from there to a PC; then on the PC, he could copy and rename the tune file; then load it back to the tuner as an aftermarket modified tune; and then the user adjustable parameters would be available. But not sure if there is some technicality, such as a different file type for the factory versus aftermarket tune file, that would prevent this.
So that's why I thought the dumbed-down devlce that only allows rear gear ratio change might be quicker and easier, LOL
Bad choice of wording on my part.. Just to clarify, I should had said "return to stock" from the SCT tuning device .. At any rate, there are no adjustment option menus for the OEM/stock calibration tune in the SCT device... The SCT device only stores the OEM calibration in the device while the SCT canned or custom aftermarket tune is currently uploaded into the vehicle's ECM.. Therefore, only the canned or custom calibration tunes are able to be adjusted from within the SCT device menu.. In the meantime, hope this clarifies any misinformation on my part..
yeah, that's why I was wondering if you could "fool" the device by renaming the factory tune file .... anyway I guess it doesn't matter because the OP has found a different solution, hopefully
yeah, that's why I was wondering if you could "fool" the device by renaming the factory tune file .... anyway I guess it doesn't matter because the OP has found a different solution, hopefully
Originally Posted by m05fastbackGT
If there is a way to fool the device by renaming the OEM calibration file? I'm not aware of it
Thank y'all so much! I decided to not go with the tune just to avoid any potential smog issues. This "dumb-down" Speedometer Calibrators by hypertech has a CARB E.O. D-260-22 so I guess if anything goes wrong, I just show the smog shop this number then?
Now I really look forward to my axle-back Borla s-type and the 3.73 gear. Should be fun.
I think you should be fine with the gears/speedo recalibration ... but I hope you don't get in trouble for the "exhaust system modification" (Borla muffers)
I think you should be fine with the gears/speedo recalibration ... but I hope you don't get in trouble for the "exhaust system modification" (Borla muffers)
If that happened, I will just put my stock mufflers back. I will definitely ask some friends about a good smog shop.
The Borla exhaust systems are all designed to pass emission requirement standards as far as passing OBDII emissions testing...However, when it comes to California, I'm not quite sure if they still use the old tail-pipe sniffer test or not? I'm also not sure if the aftermarket replacement exhaust is required to have a C.A.R.B number, if it is? then you may have no other option, but to reinstall your stock mufflers until after the inspection/emissions testing has been completed
9/27/22, 11:03 AM
Now That's what we called Tunes!
Although I know Some of Mine is Rusty!
I Never Used Emoticons Back in the Day! DOH! 
