GT350 FORScan Tweaks

guzie · Mar 4, 2018

reef_guru said:
from page 2: mike02z, lemers, mattlqx, epiphany.

in regards to changing tire size from 305/35 to 325/30.

i went to the local ford dealer today and spoke with the service manager. according to him, if the forescan/mx speedo code change was done by me and not by them, and then entered into the computer on his desk, it voids the warranty. his reasoning is because it directly effects the mileage which is part of the warranties limit. he has no problem doing it for me. but he recommended the rubber be put on else where cuz his mechanics are brutal and will prob scratch the rims.

with that i will be taking the r spec wheels with 325/30 and 305/30 to discount tire to be mounted then dropping them off at the dealer with the car so they can put on the new wheels and re-program the speedo while its in the air. this way the mileage will not be effected.

i dont know about the service managers elsewhere, but im not taking that chance if something goes wrong in the future.

Dealer couldn’t change mine. They charged me 55 bucks to hook it up and then tell me they could not adjust it. I ended up doing it myself with forscan.

bmarco · Mar 4, 2018

If you have a non-R GT350 and are going to 325/30 from 305/35, most are the same diameter (27”). Why would you need to change ?

EastTNMustang · Mar 5, 2018

EastTNMustang said:
Please check out the spreadsheet on page 1 of this thread:

https://www.mustang6g.com/forums/showthread.php?t=98260

I'm trying to collect all of the FORScan codes on one spreadsheet (similar to what the F-150 folks have done.) If you have codes that are verified to work on your 350s, please let me know and I'll add it to the sheet.

Thanks.

Bump for any inputs to the 350 tab on the above spreadsheet. Thanks.

JJones · Apr 8, 2018

Anyone know how to enable the exhaust tab on the base to sync 3 bezel on a gt350 anything on the launch control tab as well?

Spart · Apr 8, 2018

JJones said:
Anyone know how to enable the exhaust tab on the base to sync 3 bezel on a gt350 anything on the launch control tab as well?

This is included in my post here: https://www.mustang6g.com/forums/showpost.php?p=1811217&postcount=1300

JCSIX13 · Apr 22, 2018

new to forscan

Hi I am a new user to Forscan.

I am having trouble

it says " Connection to the vehicle has been established"

then it says "Unable to identify the vehicle. Please contact developers"

it asks if I have a custom tune in the vehicle - which I do

then it asks me to enter the codes from the computer.

these are the numbers on the cars computer

H/W: FR3A-12B684-EUA

P/N: GR3A-12A650-BUA

SITE: M799G

P/N: A6SXU24520300
S/N: 049104916

What number is it looking for?

I tried the top two and no luck

Thanks

Spart · Apr 23, 2018

reef_guru said:
from page 2: mike02z, lemers, mattlqx, epiphany.

in regards to changing tire size from 305/35 to 325/30.

i went to the local ford dealer today and spoke with the service manager. according to him, if the forescan/mx speedo code change was done by me and not by them, and then entered into the computer on his desk, it voids the warranty. his reasoning is because it directly effects the mileage which is part of the warranties limit

LOL

Plenty of dealers try to do this for their customers, but they're limited to the canned values (as in what came as OEM tire size) with IDS or whatever they're using now. It's especially common with the F150 guys, since they have a tendency to throw a 6" lift on and fit massive tires so they can turn a nicely riding truck into a disaster of a brodozer.

No f'ing way it voids the warranty. I'd shop around for a better dealership.

Tank · Apr 23, 2018

JCSIX13 said:
Hi I am a new user to Forscan.

I am having trouble

it says " Connection to the vehicle has been established"

then it says "Unable to identify the vehicle. Please contact developers"

it asks if I have a custom tune in the vehicle - which I do

then it asks me to enter the codes from the computer.

these are the numbers on the cars computer

H/W: FR3A-12B684-EUA

P/N: GR3A-12A650-BUA

SITE: M799G

P/N: A6SXU24520300
S/N: 049104916

What number is it looking for?

I tried the top two and no luck

Thanks

Hey [MENTION=24520]JCSIX13[/MENTION],
I have no experience with tunes, but I thought you might want to contact your tuner to see if they have the codes forscan is asking for. Also, the Forscan site has it’s own forum and your question might be addressed somewhere in there.

Good luck:cheers:

bmarco · Apr 23, 2018

Earlier, I’d asked if the 305 and the 325 are the same diameter, why would you need to adjust the speedo ?

JCSIX13 · Apr 25, 2018

Tank said:
Hey [MENTION=24520]JCSIX13[/MENTION],
I have no experience with tunes, but I thought you might want to contact your tuner to see if they have the codes forscan is asking for. Also, the Forscan site has it’s own forum and your question might be addressed somewhere in there.

Good luck:cheers:

Tank thanks - I ended up getting help from Forscan.

All set

Jack

JCSIX13 · Apr 27, 2018

boost/vacuum gauge

Does anyone know if it is possible to get the dash center gauge to show boost/vacuum gauge like the eco boost in the GT350?

Thanks

guzie · Apr 29, 2018

bmarco said:
Earlier, I’d asked if the 305 and the 325 are the same diameter, why would you need to adjust the speedo ?

They aren’t the same diameter though. The wider you go in the same series (35) the bigger the diameter. The series number represents the percentage of the width and is the value of the sidewall. So taking a 305 width and a 325 width the 325 width is going to have a larger value in the sidewall height. This sidewall height is added twice to the wheel diameter to calculate the diameter. Going to 325 is an increase in overall diameter.

dgc333 · Apr 29, 2018

guzie said:
They aren’t the same diameter though. The wider you go in the same series (35) the bigger the diameter. The series number represents the percentage of the width and is the value of the sidewall. So taking a 305 width and a 325 width the 325 width is going to have a larger value in the sidewall height. This sidewall height is added twice to the wheel diameter to calculate the diameter. Going to 325 is an increase in overall diameter.

They aren't the same series, he is talking about 305/35 and 325/30. In this case the 325 tires is 3/4" smaller in diameter.

bmarco · May 3, 2018

Thanks for the clarification, could have sworn the diameters were the same when I looked them up, guess I will try the Forscan solution as I am going to 325's soon.

Leonard · May 4, 2018

bmarco said:
Thanks for the clarification, could have sworn the diameters were the same when I looked them up, guess I will try the Forscan solution as I am going to 325's soon.

Honestly, 3/4 inch change in diameter is within the range of speed variance you'd see on the OEM tire between full tread and fully worn. I wouldn't sweat it that much.

GT350 FORScan Tweaks

guzie

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bmarco

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EastTNMustang

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JJones

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Spart

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JCSIX13

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Spart

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Tank

9/11 - Never Forget

bmarco

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guzie

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dgc333

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bmarco

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Leonard

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