SCT Advantage III Racer Pro Software

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#21

• Dec 18, 2018

• #21

a91what said:

no, the o2 is only for feedback.

I would suspect the MAF sensor at this point, do you have a stocker to put in for testing?

Click to expand...

I don't have the stock maf. I had the ford performance maf which was working. Then my tune got corrupted and at the time I thought my maf was bad. So I bought the SCT BA3000 to replace it. Installed and had the exact same issue. Could the wiring for the maf be bad. I inspected the terminal and wiring an all seems good.

 

a91what

SendMeUrDataLog

10 Year Member

Apr 6, 2011

10,739

6,720

214

Hillsborough county

Dec 18, 2018

#22

• Dec 18, 2018

• #22

thats a good question, I am going to assume there is an issue with the tune then. can you revert it back to the stock tune?

do you have datalogging capabilities? you may want to see what the MAF feedback looks like to be sure its not pegged or somesuch

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#23

• Dec 18, 2018

• #23

a91what said:

thats a good question, I am going to assume there is an issue with the tune then. can you revert it back to the stock tune?

do you have datalogging capabilities? you may want to see what the MAF feedback looks like to be sure its not pegged or somesuch

Click to expand...

I no longer have that tune since it wasnt working when i tried reloading it to the pcm. So no I dont have that tune. I have the elm with forscan that I can datalog. I'm with my mustang right now at my parents using their computer to do all the tuning mods. So what do you need me to do and look for. And what do you change to fix a pegged maf? Im going outside to refer to my manual on checking for MAF functionality to make sure all signals are good.

 

Reactions: a91what

a91what

SendMeUrDataLog

10 Year Member

Apr 6, 2011

10,739

6,720

214

Hillsborough county

Dec 18, 2018

#24

• Dec 18, 2018

• #24

basically i was looking for a way for you to look in the datalog to make sure the maf is giving a good signal.

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#25

• Dec 18, 2018

• #25

i have a way to log this with forscan. ill post the picture. could it be a crankshaft sensor that is bad. Would it run like it does in closed loop with a bad crankshaft sensor. In open loop it would cause it to stall correct if it were bad but in closed loop the table is already adjusted and doesnt use the crankshaft sensor right.

 

a91what

SendMeUrDataLog

10 Year Member

Apr 6, 2011

10,739

6,720

214

Hillsborough county

Dec 18, 2018

#26

• Dec 18, 2018

• #26

only thing you are doing is plugging the MAF in.... that points at an issue with the maf or its wiring

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#27

• Dec 18, 2018

• #27

Datalogging it now. Will unload soon.

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#28

• Dec 18, 2018

• #28

Voltage on the maf at start

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#29

• Dec 18, 2018

• #29

Airflow reading at start

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#30

• Dec 18, 2018

• #30

the datalog says no errors found with maf

 

a91what

SendMeUrDataLog

10 Year Member

Apr 6, 2011

10,739

6,720

214

Hillsborough county

Dec 18, 2018

#31

• Dec 18, 2018

• #31

can you lay rpm and injector pw on there as well?

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#32

• Dec 18, 2018

• #32

here is some trouble codes from past

 

a91what

SendMeUrDataLog

10 Year Member

Apr 6, 2011

10,739

6,720

214

Hillsborough county

Dec 18, 2018

#33

• Dec 18, 2018

• #33

my maf in a 4" tube shows 10g/sec at a 800 rpm idle

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#34

• Dec 18, 2018

• #34

yep 1 minute. Thats strange. Let me show you rpm one sec.

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#35

• Dec 18, 2018

• #35

Injectors bank 1 and 2

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#36

• Dec 18, 2018

• #36

RPM next to injector bank 1 and 2

 

a91what

SendMeUrDataLog

10 Year Member

Apr 6, 2011

10,739

6,720

214

Hillsborough county

Dec 18, 2018

#37

• Dec 18, 2018

• #37

holy pw.... 155ms is impossible so we will ignore that number. your MAF settings are jacked up.

now datalog with the maf unplugged and compare the pw and rpm numbers

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#38

• Dec 18, 2018

• #38

 

OneSick99GT

Active Member

Nov 20, 2018

364

46

38

Dayton, Ohio

Dec 18, 2018

#39

• Dec 18, 2018

• #39

I think I see why. It looks like the voltage is way too low. Which means the injectors aren't putting in enough fuel either. You tell me since you know what your doing lol. I was given this tune as a base to start from. It looks like a need to increase the voltage and lbs overall on my maf table.

 

Last edited: Dec 18, 2018

a91what

SendMeUrDataLog

10 Year Member

Apr 6, 2011

10,739

6,720

214

Hillsborough county

Dec 18, 2018

#40

• Dec 18, 2018

• #40

That seems to be correct. load the tune you were given back in to start fresh then only adjust the maf flow. I am at work so i will need time to give you a full description.