Pettit Super Charger Owners
12-15-2007, 02:11 PM
#851
Pettit fangurl <3
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Location: Aston, PA
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spoke to moon about an hour ago...
he left WPB around 1230....was about 100mi outta of the city when i called him...
will keep you posted....
PS...on the maf housing, i will be getting the new one and a new air filter..but im not sure of the size...
he left WPB around 1230....was about 100mi outta of the city when i called him...
will keep you posted....
PS...on the maf housing, i will be getting the new one and a new air filter..but im not sure of the size...
12-15-2007, 05:16 PM
#852
"MuNcH-E"
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12-15-2007, 09:38 PM
#856
Pettit fangurl <3
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just got off the phone with moon...
its just past "south of the border"
hunkerin down...eatin some grub and gonna take a nap...
still rainin like cats and dogs...
its just past "south of the border"
hunkerin down...eatin some grub and gonna take a nap...
still rainin like cats and dogs...
12-16-2007, 03:41 AM
#862
Several conversations at the same time had me saying "voltage" when, as MM points out, I should have been saying "reading", as in grams/second. Good thing nobody counts on me for serious info around here.
12-16-2007, 11:16 AM
#865
We are discussing the concept of the airflow demands of the supercharger being more than the MAF sensor can measure. With the smaller intake pipe previously included in the Pettit kit this is more likely to happen. The converse is also true, to a point.
12-16-2007, 11:23 AM
#866
Administrator
the point is that with this kit you should be no where near pegging th eMAF. i ffor someone is that means- to ME- that ther eis a problem.
I didnt understand previously that this kit includes a MAF tube that is smaller than stock diameter. What is the size of the tube that comes with it?
another thing i just read i need confirmation on before i continue.
no one should be pegging this maf before 400some hp
I didnt understand previously that this kit includes a MAF tube that is smaller than stock diameter. What is the size of the tube that comes with it?
another thing i just read i need confirmation on before i continue.
no one should be pegging this maf before 400some hp
12-16-2007, 11:29 AM
#867
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can someone please explain what "pegging the maf" means?
the only input i have here is that i will be getting a new MAF housing that is a little bigger than what came with the original kit...new housing and new filter..
the only input i have here is that i will be getting a new MAF housing that is a little bigger than what came with the original kit...new housing and new filter..
12-16-2007, 11:40 AM
#870
Administrator
maf meters measure the amount of air coming into the engine. they have each have an upper limit they can read based on their design. when you reach that limit its called "pegging the meter". sort of like "pegging the needle" on the speedo or odo= its the limit to the reading it can give.
with a maf if you reach its limit then all of the air above that reaching the motor is going in unmeasured, the electronics dont see it, so not enough fuel is added , you run lean , knock, boom, new engine
the stock Maf in its original 3inch/76 mm housing is capable of measuring enough air to produce 400some hp.
going down in maf tube size while adding FI is never good. you can go up in size. peopel used to go up to 80mm very often but nowadays 90 mm (3.5 inches) is often used.
with a maf if you reach its limit then all of the air above that reaching the motor is going in unmeasured, the electronics dont see it, so not enough fuel is added , you run lean , knock, boom, new engine
the stock Maf in its original 3inch/76 mm housing is capable of measuring enough air to produce 400some hp.
going down in maf tube size while adding FI is never good. you can go up in size. peopel used to go up to 80mm very often but nowadays 90 mm (3.5 inches) is often used.
12-16-2007, 11:46 AM
#873
originally Pettit was running its system with a 3 " tube. this was when the INT x or other management systems had to be used. Basically bypassing the maf. Now that there is a flash out and the maf can be fully functional a oem size tube is supplied.
Do I have that correct?
oscd
Do I have that correct?
oscd
12-16-2007, 11:57 AM
#874
Pettit fangurl <3
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originally Pettit was running its system with a 3 " tube. this was when the INT x or other management systems had to be used. Basically bypassing the maf. Now that there is a flash out and the maf can be fully functional a oem size tube is supplied.
Do I have that correct?
oscd
Do I have that correct?
oscd
on my existing housing i have my MAF installed...something moon did for me after the fact when he was up here for rotorfest...i wanted to have my traction control..
moon tells me that the existing housings we have now will not work with the flash..
12-16-2007, 12:07 PM
#875
That makes sense Shinka - whenever you change the MAF housing you have to rescale the entire ECU - aka retune.
The sensor always reads from 1-5 volts; if your tube size is smaller - 5 volts comes sooner (IE with less airflow). As it gets larger; you will also lose granularity as each volt cahnge is a larger airflow value.
The sensor always reads from 1-5 volts; if your tube size is smaller - 5 volts comes sooner (IE with less airflow). As it gets larger; you will also lose granularity as each volt cahnge is a larger airflow value.