MAF after the turbo

Snorkus, filters, throttle bodies and intake manifolds.

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thehookeup
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MAF after the turbo

Post by thehookeup »

so do you think that i could put my MAF after my turbo. it would still be reading the same amount of air flow. in my opinion it would be more accurate. and just hook up a filter before the turbo.. call me crazy but i think that it could work.

what do ya think


FYI i have a front mount. nearly just like doug vincent's just i have a turbo. well i almost have a front mount. i just cant get the dame bumper on. bring out the cutting wheel.
-93 2.2T (RIP), 93 N/A best car on earth.
-00 legGT, 18" PIAA sport mesh wheels, front/rear Rallitek sways, lowered whitelines, coming soon: 2.5L sti internals, 20g heads P&P, twin charged. motor is almost ready to go in.
Andrew
Kelly
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Post by Kelly »

The problem is that the MAF also reads intake air temp. You put it after the turbo, it reads hot air, and pulls back timing. Tuners have played with post turbo MAFs for years. Usually you would use two MAFs. One pre turbo, and only use the temp sensor, and then post for flow.

Its really only necessary for very large, high flowing turbos with cams and large displacement. It doesnt always work. Theres some actuall fluid dynamics involved that not all tuners can afford.

Its cheaper to switch to a speed density type fuel system, and get rid of the MAF alltogether.

Thanks for playing the MAF game. :P
douglas vincent
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Post by douglas vincent »

If you are FMIC, then you can stick the MAF after the intercooler.....
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thehookeup
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Post by thehookeup »

thanx guys i appreciate it.
-93 2.2T (RIP), 93 N/A best car on earth.
-00 legGT, 18" PIAA sport mesh wheels, front/rear Rallitek sways, lowered whitelines, coming soon: 2.5L sti internals, 20g heads P&P, twin charged. motor is almost ready to go in.
Andrew
vrg3
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Post by vrg3 »

rallitektech wrote:The problem is that the MAF also reads intake air temp. You put it after the turbo, it reads hot air, and pulls back timing.
Nope, not on our cars. Temperature is measured only to compute airflow, and never leaves the sensor.
"Just reading vrg3's convoluted, information-packed posts made me feel better all over again." -- subyluvr2212
Kelly
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Post by Kelly »

Oh, I just assumed.

I guess thats kinda good to know then. :P
Legacy777
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Post by Legacy777 »

vrg3 wrote:
rallitektech wrote:The problem is that the MAF also reads intake air temp. You put it after the turbo, it reads hot air, and pulls back timing.
Nope, not on our cars. Temperature is measured only to compute airflow, and never leaves the sensor.
and that is the beauty of MAF based systems :)
Josh

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