Do MAF and injectors have to match?

C

Code Red

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Austin, TX

Jan 17, 2006

#1

• Jan 17, 2006

• #1

I am about to put some Victor Jr. heads on my '95 Stang. I am thinking replacing my stock 19 lbs. injectors with 36 lbs ones (I hope to turbo someday).

I have just been told that I could upgrade my injectors without upgrading the MAF. I just would not see the benefit until I upgrade the MAF. Is this true?
Can I use a 19 lbs MAF with 36 lbs injectors or will the car start running like bad?

 

srothfuss

Last night I stabbed the same guy 7 times in a row

Oct 17, 2004

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Woodward Ave.

Jan 17, 2006

#2

• Jan 17, 2006

• #2

I was alway's told that the Injectors had to match the MAF calibration becuase of the pulse / dwell cycles.

Say a 19# injector is open for 0.05 seconds and then a 36# injector is open for the same amount of time. The 36# injector will dump more gasoline and cause your motor to run rich...

Just what I was taught....

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

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Jan 17, 2006

#3

• Jan 17, 2006

• #3

Agreed. The MAF has to be cal'd for the injectors. You should be able to accomplish this with a TwEECer if you have one.

 

C

Code Red

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Jan 5, 2002

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Jan 17, 2006

#4

• Jan 17, 2006

• #4

Thanks guys. I guess I could send my Pro-M off to get recalibrated. I just didn't want to take on that additional time or expense. Maybe I'll just wait until I a turbo kit.

However, that does bring up another question. I already have a E303 cam, 70 mm throttle body, pulleys, cold air kit, and a custom chip.
Next month I am installing Victor Jr. Heads, Performer RPM intake, JBA headers, and Magnaflow X-pipe w/cat. ()

Would I need larger injectors for the combo or will 19 lb. work?

 

srothfuss

Last night I stabbed the same guy 7 times in a row

Oct 17, 2004

1,796

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0

Woodward Ave.

Jan 17, 2006

#5

• Jan 17, 2006

• #5

19's are good up to 300 HP. (most N/A applications on the stock CID will approach this limit)

Save your $$ for the turbo kit and the recalibration later.

 

C

Code Red

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Jan 17, 2006

#6

• Jan 17, 2006

• #6

Thanks. That saves me time and money.

 

Grn92LX

Fidanza Man!

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Jan 14, 2001

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Jan 17, 2006

#7

• Jan 17, 2006

• #7

No they don't have to match IF you have a tuning device and can tune the car properly with a wideband.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

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Jan 17, 2006

#8

• Jan 17, 2006

• #8

That sounds familiar.

 

D

Daggar

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Jul 19, 2004

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#9

• Jan 17, 2006

• #9

HISSIN50 said:

That sounds familiar.

Click to expand...

Yeah but Grn92 said it correctly.

 

aleborjas

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Sep 11, 2005

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Jan 17, 2006

#10

• Jan 17, 2006

• #10

don get JBA get some long tubes for almost the same price if you like i can give you part # and price!
other cueston with a cobra 93 computer is the same thing?