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Topic: Mass air swap (Read 1409 times) previous topic - next topic

Mass air swap

I about to swap a 351w into the Bird, and i'm going from speed density to Mass air.  Im using a 70mm sensor with what i believe to be a stock 90's computer from a Mustang. I think i heard somewhere that the computer need to be calibrated for the size of the sensor, but i cant seem to find it.  Has anyone else heard this? Would it be easier to replace the wiring harness or should i get a piggyback harness? Also, do i need a new MAP sensor?
1988 Thunderbird Sport (1st car)
351W in the works
"I'll get it one piece at a time...":D

Quote from: bhazard;300566
You got woman'd.

Mass air swap

Reply #1
the MAF sensor has to be matched, or callibrated for the size injectors you are useing on a 5.0. not the computer. as for a harness, all you need is a "piggyback" MAF harness. i just listed one on ebay with an A9L. you can get them for like 35-40 bucks.
:america: 1988 Thunderbird Sport, Former 4.6 DOHC T56 conversion project.

Rest of the country, Welcome to Massachusettes. Enjoy your stay.

 
Halfbreed... Mango Orange Y2K Mustang GT
FRPP complete 2000 Cobra engine swap, T56 n' junk...
~John~

Mass air swap

Reply #2
u can find a maf from a sn-95 5.0 mustang, that will be bigger then the old fox maf's and have the same calibration for a HO... but im not sure about the 351, its probley the same tho if your useing same cam. and if your dareing enough, you can go to a junkyard and look for  a maf car and pull the plug off and cut back as much wire as you can, then pin it up yourself. and about the map, its a bap now, instead of the vacume line going to it, it's a white tube that comes off and uses that to find the barimetric pressure as opposed to manifold pressure. what kind of work are you doing to the 351? just like a stock 94+  5.7?

Mass air swap

Reply #3
It's a basic rebuild because it's my first, but im adding a gt40 intake, headers, and i just found a cobra computer.  I'm going to make an cold air intake for it.  I'll replace the cam and heads later when more funds come in:)
1988 Thunderbird Sport (1st car)
351W in the works
"I'll get it one piece at a time...":D

Quote from: bhazard;300566
You got woman'd.

Mass air swap

Reply #4
Remember, the Cobra computer has a speed limiter and slightly less aggresive timing/fuel curves believe it or not.
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

 

Mass air swap

Reply #5
How would i get the sensor calibrated?  Would i need to buy a new module, or can a shop do it?
1988 Thunderbird Sport (1st car)
351W in the works
"I'll get it one piece at a time...":D

Quote from: bhazard;300566
You got woman'd.