recalibrate maf?

fasthippo

New Member

Oct 22, 2008

52

1

0

OC, CA

Jan 27, 2009

#1

• Jan 27, 2009

• #1

i just put new injectors in the other day but it hasnt run right since. i guess i have to recalibrate the maf but i have no idea how. i have a predator tuner but i cant find anything having to do with recalibrating or adjusting for larger injectors anywhere in the manual or on the tuner itself.

is this something i can do with the predator? or does whatever tuner i take it to have to adjust it?

i just need it to be able to drive it to the tuner without it stalling or anything

 

billfisher

Active Member

Jul 17, 2005

1,296

4

38

huntsville, AL

Jan 28, 2009

#2

• Jan 28, 2009

• #2

no such thing.

the pcm transfer function has to be changed. the maf only read air volume the pcm adjusts for that and injector size.

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

4

58

Four Oaks NC

Jan 28, 2009

#3

• Jan 28, 2009

• #3

why did you get larger injectors? what kind of power and power added do you have?

 

fasthippo

New Member

Oct 22, 2008

52

1

0

OC, CA

Jan 28, 2009

#4

• Jan 28, 2009

• #4

thanks for answering but i already got it figured out. i'm gettin a dyno tune later in the week.

and i bought larger injectors because around 5200rpm i would lean out and by 5700 i'd start pinging. most of my mods are in my sig but since i just recently finished it and it hasnt been tuned i dont know what kind of power its putting down.. we'll find out on friday tho

i'll post up the dyno sheets when its done

 

98COBRA281

10 Year Member

Nov 24, 2007

1,348

30

59

Port St. Lucie, Florida

Jan 28, 2009

#5

• Jan 28, 2009

• #5

you have 30's right? i just put my 24's in with the maf calibrated for the 19's, it runs fine and i can drive it, but if i step on it under load, it black smokes like a diesel

my tuner is still having problems with the computer, so i dropped my x3 off to him today, he's putting another base tune in it so it will be calibrated for the 24's, so i can still drive it until we get it on the dyno and get everthing dialed in right...

 

fasthippo

New Member

Oct 22, 2008

52

1

0

OC, CA

Jan 29, 2009

#6

• Jan 29, 2009

• #6

haha nice, mine smoked a little just from idleing with the 30's, i didnt even try driving it cuz i knew i'd just be bathing my engine in fuel.

tomorrow morning i'm goin to get a base tune then as soon as i upload it i'll drive the car there for the dyno tuning. so i'll let ya know what kind of numbers it puts down.