4:10's and what to do next?
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Hi gang, I just had my dealer install 4:10's (my only mod so far) in my '07 GT/CS automatic and took it for a drive! Car has come alive on low end, but the speedo is way out of wack. Dealer mechanic said that speedo wood be off about 7 1/2 % but in reality its of over 20%. as I check it in radar zone at 120 kmph it was actually doing 97-98 kmph. I realize that a retune is in order, but can the speedo be recalibrated with tune or does this only happen with new speedo cog?. When I took car to track the car ran 14.0084/98.46 mph best as compared to 14.118/97.33 (3:31's). I made several passes on car with tranny in drive but car would always shift to early on its own. If I left in first gear and shifted it would shut down on the rev limiter at top of first and second. I would appreciate any help on what tuner to go with and/or tuner shop I could call to trouble shoot. My goal is to get this puppy into the high 12's and would welcome advise to do so. Thanks
Bryan C
Bryan C
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Bryan,
Welcome to the fun zone. I did just what you did and had dealer install 4.10 gears, and I also have an automatic. That's just the start of what you began. GET A TUNE. I think any hand held tuner will help you and let you program in your new gears to get the speedo right. But, I went with Brenspeed for my tuner and they will set it up (custom tune) it for your car. There are other reputal dealers/tuners out there, this was my choice and I have no regrets and have already recommened a few friends to Brenspeed. Every call I make there I talk to someone and I've done tune changes and they are right on top of it. What you get with a tune, what you need for speedo anyway, and a sore neck. That is until you get used to the car you just awoke into a new life. The response and torque will blow your socks and rubber right off. As they say, Just do it!!!!
Tune, tune, tune = fun, fun, fun
Welcome to the fun zone. I did just what you did and had dealer install 4.10 gears, and I also have an automatic. That's just the start of what you began. GET A TUNE. I think any hand held tuner will help you and let you program in your new gears to get the speedo right. But, I went with Brenspeed for my tuner and they will set it up (custom tune) it for your car. There are other reputal dealers/tuners out there, this was my choice and I have no regrets and have already recommened a few friends to Brenspeed. Every call I make there I talk to someone and I've done tune changes and they are right on top of it. What you get with a tune, what you need for speedo anyway, and a sore neck. That is until you get used to the car you just awoke into a new life. The response and torque will blow your socks and rubber right off. As they say, Just do it!!!!
Tune, tune, tune = fun, fun, fun
#3
+1 on the tune first. It will do wonders and correct the speedo issue. Also, a torque converter would be HUGE now that you have 4.10 gears. The gears by themselves make the car feel alive, but a TC by itself will lower your times more, especially in the 60ft. The combo of the two is amazing for lowering your time for not adding any hp's. Both myself and a friend of mine each have auto's. He has the gears/tc combo and he needed to get better tires to keep from spinning them on the line. When he did it was a huge difference.
Of course there is always a CIA with a tune as well. One of the cheapest and best mods for hp per dollar.
Of course there is always a CIA with a tune as well. One of the cheapest and best mods for hp per dollar.
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Hi gang, I just had my dealer install 4:10's (my only mod so far) in my '07 GT/CS automatic and took it for a drive! Car has come alive on low end, but the speedo is way out of wack. Dealer mechanic said that speedo wood be off about 7 1/2 % but in reality its of over 20%. as I check it in radar zone at 120 kmph it was actually doing 97-98 kmph. I realize that a retune is in order, but can the speedo be recalibrated with tune or does this only happen with new speedo cog?. When I took car to track the car ran 14.0084/98.46 mph best as compared to 14.118/97.33 (3:31's). I made several passes on car with tranny in drive but car would always shift to early on its own. If I left in first gear and shifted it would shut down on the rev limiter at top of first and second. I would appreciate any help on what tuner to go with and/or tuner shop I could call to trouble shoot. My goal is to get this puppy into the high 12's and would welcome advise to do so. Thanks
Bryan C
Bryan C
Simple fix and you'll be on your way to a faster car!
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+1 on the tune first. It will do wonders and correct the speedo issue. Also, a torque converter would be HUGE now that you have 4.10 gears. The gears by themselves make the car feel alive, but a TC by itself will lower your times more, especially in the 60ft. The combo of the two is amazing for lowering your time for not adding any hp's. Both myself and a friend of mine each have auto's. He has the gears/tc combo and he needed to get better tires to keep from spinning them on the line. When he did it was a huge difference.
Of course there is always a CIA with a tune as well. One of the cheapest and best mods for hp per dollar.
Of course there is always a CIA with a tune as well. One of the cheapest and best mods for hp per dollar.
Last edited by Five Oh Brian; 9/1/08 at 08:56 PM.
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Thanks guys, onward we go..... Are tuners restricted to preprogramed tunes or can you make adjustments with certain things? ie shift points / torque converter etc.
does anybody have preference ie Predator / SCT / Hypertech ???
Thanks again....much appreciated
Bryan
does anybody have preference ie Predator / SCT / Hypertech ???
Thanks again....much appreciated
Bryan
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Call Brenspeed and they'll answer all you questions. I should say most will, I can just speak for them since that's whom I chose to go with. But, yes to your question. And these tuners will give you custom tunes in your tuner for made your car. I love my gears but, the tune woke it all up. Carzy fun now!!
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Hi gang, I just had my dealer install 4:10's (my only mod so far) in my '07 GT/CS automatic and took it for a drive! Car has come alive on low end, but the speedo is way out of wack. Dealer mechanic said that speedo wood be off about 7 1/2 % but in reality its of over 20%. as I check it in radar zone at 120 kmph it was actually doing 97-98 kmph. I realize that a retune is in order, but can the speedo be recalibrated with tune or does this only happen with new speedo cog?. When I took car to track the car ran 14.0084/98.46 mph best as compared to 14.118/97.33 (3:31's). I made several passes on car with tranny in drive but car would always shift to early on its own. If I left in first gear and shifted it would shut down on the rev limiter at top of first and second. I would appreciate any help on what tuner to go with and/or tuner shop I could call to trouble shoot. My goal is to get this puppy into the high 12's and would welcome advise to do so. Thanks
Bryan C
Bryan C
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Last edited by 2006torquefreak; 10/24/08 at 09:30 PM.
#11
Hi gang, I just had my dealer install 4:10's (my only mod so far) in my '07 GT/CS automatic and took it for a drive! Car has come alive on low end, but the speedo is way out of wack. Dealer mechanic said that speedo wood be off about 7 1/2 % but in reality its of over 20%. as I check it in radar zone at 120 kmph it was actually doing 97-98 kmph. I realize that a retune is in order, but can the speedo be recalibrated with tune or does this only happen with new speedo cog?. When I took car to track the car ran 14.0084/98.46 mph best as compared to 14.118/97.33 (3:31's). I made several passes on car with tranny in drive but car would always shift to early on its own. If I left in first gear and shifted it would shut down on the rev limiter at top of first and second. I would appreciate any help on what tuner to go with and/or tuner shop I could call to trouble shoot. My goal is to get this puppy into the high 12's and would welcome advise to do so. Thanks
Bryan C
Bryan C
#12
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Gear change at a dealership should be in the $700-$900 range, which should include all parts & labor. Aftermarket stall converter is an awesome mod for our automatics. Drag radials are a big plus - especially at the dragstrip. And I highly recommend boost, as well.
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I'm going to reccomend our 93 Octane Street Race tune and C&L Racer Intake.
Give me a call, we have a package that includes C&L Racer Intake assembly as well as SCT X3 Powerflash programmer preloaded with 3 of our custom tunes for your specific vehicle and modifications in stock ready to ship same-day!
$634.99
We also have the JLT series 2 intake and SCT X3 Powerflash programmer preloaded with 3 of our custom tunes for your specific vehicle and modifications in stock ready to ship same-day!
$525.99
Both packages will get you a HUGE increase in throttle response, power all across the RPM range, correction of speedometer, better gas mileage, all around 100 times better driveability. Because you have an automatic you'll also get better shift points, firmness, and quicker shift. You really get what you paid for!
Chris Rose
Tillman Speed Inc.
www.TillmanSpeed.com
610-497-5776
Give me a call, we have a package that includes C&L Racer Intake assembly as well as SCT X3 Powerflash programmer preloaded with 3 of our custom tunes for your specific vehicle and modifications in stock ready to ship same-day!
$634.99
We also have the JLT series 2 intake and SCT X3 Powerflash programmer preloaded with 3 of our custom tunes for your specific vehicle and modifications in stock ready to ship same-day!
$525.99
Both packages will get you a HUGE increase in throttle response, power all across the RPM range, correction of speedometer, better gas mileage, all around 100 times better driveability. Because you have an automatic you'll also get better shift points, firmness, and quicker shift. You really get what you paid for!
Chris Rose
Tillman Speed Inc.
www.TillmanSpeed.com
610-497-5776
Last edited by TillmanSpeed; 10/28/08 at 10:54 AM.
#15
The dealer should be able to set the computer for the new gear set. but.....
We had gears installed by the dealer in my wife's '09 automatic. The Speedometer was off at least 10% (reads too high). The dealer made the computer adjustment, verified it, but the speedometer is still off the same amount.
Ford is claiming the ECM needs to be replaced. They also hint that this speedometer difference is 'acceptable'. I think not.
I hope a custom tune will correct the problem, but if the Ford scan tool changing the gear ratio setting doesn't work, how will a custom tune work?
We had gears installed by the dealer in my wife's '09 automatic. The Speedometer was off at least 10% (reads too high). The dealer made the computer adjustment, verified it, but the speedometer is still off the same amount.
Ford is claiming the ECM needs to be replaced. They also hint that this speedometer difference is 'acceptable'. I think not.
I hope a custom tune will correct the problem, but if the Ford scan tool changing the gear ratio setting doesn't work, how will a custom tune work?
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It works. They can recalibrate it. Don't let them tell you otherwise. Or go to a new dealership.
You're going to want the CAI/Tune anyway. It makes 15x the difference that the gears did, guaranteed.
Chris Rose
Tillman Speed Inc.
www.TillmanSpeed.com
610-497-5776
You're going to want the CAI/Tune anyway. It makes 15x the difference that the gears did, guaranteed.
Chris Rose
Tillman Speed Inc.
www.TillmanSpeed.com
610-497-5776
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It works. They can recalibrate it. Don't let them tell you otherwise. Or go to a new dealership.
You're going to want the CAI/Tune anyway. It makes 15x the difference that the gears did, guaranteed.
Chris Rose
Tillman Speed Inc.
www.TillmanSpeed.com
610-497-5776
You're going to want the CAI/Tune anyway. It makes 15x the difference that the gears did, guaranteed.
Chris Rose
Tillman Speed Inc.
www.TillmanSpeed.com
610-497-5776
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#18
It works. They can recalibrate it. Don't let them tell you otherwise. Or go to a new dealership.
You're going to want the CAI/Tune anyway. It makes 15x the difference that the gears did, guaranteed.
Chris Rose
Tillman Speed Inc.
www.TillmanSpeed.com
610-497-5776
You're going to want the CAI/Tune anyway. It makes 15x the difference that the gears did, guaranteed.
Chris Rose
Tillman Speed Inc.
www.TillmanSpeed.com
610-497-5776
Apparently if a parameter is followed by an asterisk when viewed in the Ford scan tool that parameter is no longer adjustable through a Ford dealer!
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