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Joined: Apr 2003
Posts: 136
CEG\'er
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CEG\'er
Joined: Apr 2003
Posts: 136 |
ok, my car (01 zx2) started to be hesitant at take off and is extremely loud, wrx with and exhaust kind of loud. it is throwing a cel. i take it to autozone and 2 pop up. 1 #3 misfire 2 low input on maf. so i fix plug but the maf must still be messed up. i have a cta with relocator. does it sound like my car needs a new maf. if so, could i get the bigger like mustang 70 mm and the car still perform well?
thanks
steve
01 Zx2~ wings west lip kit, 17 inch motegi ff7's, ground controls, 4-2-1 header, full 2.5" exhaust no cat, magnaflow muffler, underdrive pulley, s/r ecu, p.o.t.s.
98 contour se sport~ v6 atx and stock
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Joined: Sep 2002
Posts: 6,106
Addicted CEG\'er
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Addicted CEG\'er
Joined: Sep 2002
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You may try cleaning your maf before assuming it is bad. What code did the scanner pull?
Also, a 70mm MAF would be tremendous overkill on a zetec.
Mark
2000 Black CSVT
3.0L Hybrid - 206fwhp & 195fwtq
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Joined: Oct 2003
Posts: 50
CEG\'er
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CEG\'er
Joined: Oct 2003
Posts: 50 |
A 70mm MAF wont work unless you get it remapped. Iv tried it. Im gettin it remapped in January, so ill install it then. And a 70mm MAF isnt overkill if you plan on tuning your intake properly
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Joined: Aug 2001
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CEG road warrior
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CEG road warrior
Joined: Aug 2001
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I have a Mustang GT MAF. 
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
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Joined: Apr 2002
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Hard-core CEG'er
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Hard-core CEG'er
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A 70mm MAF IS overkill.
The stock MAF is not the bottle neck of the intake system,
so replacing it (unless you go FI) is unnecessary.
The stock TB diameter (2.75" outside) will outflow the engine upto about 200BHP. And the stock MAF diameter (3" outside) is good to slightly more.
Remember things in the intake are sized to keep air movement and volume at a specific level.
Frank McCoy aka Mod-deth aka Mid Life Crisis aka SVT Doood aka mcgainer is a SCAM ARTIST
Pre98 Zetec - Some Mods
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Joined: Aug 2001
Posts: 17,248
CEG road warrior
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CEG road warrior
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Posts: 17,248 |
Originally posted by SleeperZ:
A 70mm MAF IS overkill.
The stock MAF is not the bottle neck of the intake system,
so replacing it (unless you go FI) is unnecessary.
The stock TB diameter (2.75" outside) will outflow the engine upto about 200BHP. And the stock MAF diameter (3" outside) is good to slightly more.
Remember things in the intake are sized to keep air movement and volume at a specific level.
I got mine to run the big injectors I have.  
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
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Joined: Apr 2002
Posts: 2,483
Hard-core CEG'er
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Hard-core CEG'er
Joined: Apr 2002
Posts: 2,483 |
Originally posted by LoCoZs/c:
Originally posted by SleeperZ:
A 70mm MAF IS overkill.
The stock MAF is not the bottle neck of the intake system,
so replacing it (unless you go FI) is unnecessary.
The stock TB diameter (2.75" outside) will outflow the engine upto about 200BHP. And the stock MAF diameter (3" outside) is good to slightly more.
Remember things in the intake are sized to keep air movement and volume at a specific level.
I got mine to run the big injectors I have.
Well you actually need it for the extra air,
you should have used a programmed chip to run larger injectros, that the proper way. 
Frank McCoy aka Mod-deth aka Mid Life Crisis aka SVT Doood aka mcgainer is a SCAM ARTIST
Pre98 Zetec - Some Mods
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Joined: Aug 2001
Posts: 17,248
CEG road warrior
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CEG road warrior
Joined: Aug 2001
Posts: 17,248 |
Originally posted by SleeperZ:
Originally posted by LoCoZs/c:
Originally posted by SleeperZ:
A 70mm MAF IS overkill.
The stock MAF is not the bottle neck of the intake system,
so replacing it (unless you go FI) is unnecessary.
The stock TB diameter (2.75" outside) will outflow the engine upto about 200BHP. And the stock MAF diameter (3" outside) is good to slightly more.
Remember things in the intake are sized to keep air movement and volume at a specific level.
I got mine to run the big injectors I have.
Well you actually need it for the extra air,
you should have used a programmed chip to run larger injectros, that the proper way.
I did....the car wouldn't run with just the injectors/MAF.
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
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Joined: Oct 2003
Posts: 50
CEG\'er
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CEG\'er
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Posts: 50 |
As i said, its all abt tuning the intake. It may allow up to 200 bhp, but if you tune ur intake, and it need a 3" intake, then you need to match the MAF to 3" internally
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Hard-core CEG'er
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Hard-core CEG'er
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Posts: 2,483 |
MAF size is more or less based on HP, actually more based on air flow and and air velocity requirements.
If you don't have the HP needed (therefore more airflow) to require a larger MAF, then you are loosing performance (most cases), or at best staying the same (very few cases).
Frank McCoy aka Mod-deth aka Mid Life Crisis aka SVT Doood aka mcgainer is a SCAM ARTIST
Pre98 Zetec - Some Mods
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