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Descreening MAF question?

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Old 01-04-2009, 11:14 AM
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ok guys its coming off today thnx for your opinion
Old 01-04-2009, 03:02 PM
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mine is also ported and no probs. guess some people are just unlucky. reading some of these posts seeing how some of u have running probs with a ported MAF housing
Old 01-04-2009, 03:07 PM
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Originally Posted by nemss1
mine is also ported and no probs. guess some people are just unlucky. reading some of these posts seeing how some of u have running probs with a ported MAF housing
Porting the MAF (or MAF ends) isn't a good mod IMO...especially if you have a 4L60e trans.
Old 01-04-2009, 03:13 PM
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Originally Posted by gc302047
well mine is descreend and mine still works good i just got 30 mpg highway with my 2.73s. descreening want harm anything
I just got 30mpgs too with my screen out yesterday. I've got a 99% full-bolton vert. I had a car full of stuff too which added weight. I went about 140 miles and my average mpgs was 30.1!!! I was very impressed!!! power to stomp almost anyones sh*t and with the gas mileage of a civic hahaha
Old 01-04-2009, 03:20 PM
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Originally Posted by 7camaro7
power to stomp almost anyones sh*t and with the gas mileage of a civic hahaha
You must be making about 800rwhp then.
Old 01-04-2009, 03:25 PM
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mine runs fine descreened and ported although i dont know if it added any HP.
Old 01-04-2009, 03:34 PM
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i also had descreened my maf - no ill efects.
Old 01-04-2009, 05:21 PM
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Originally Posted by unit213
You must be making about 800rwhp then.
naw, just 799rwhp
Old 01-04-2009, 05:38 PM
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Originally Posted by 7camaro7
I just got 30mpgs too with my screen out yesterday. I've got a 99% full-bolton vert. I had a car full of stuff too which added weight. I went about 140 miles and my average mpgs was 30.1!!! I was very impressed!!! power to stomp almost anyones sh*t and with the gas mileage of a civic hahaha
thats what i say my ls1 gets better on the highway than my dads little kia spectra with a weak 2.0 4cyl haha he got 28 i got 31 with a v8! haha i love my ls1 and 2.73s not of the line though.

opps. did not mean to hijack the thread.
Old 01-04-2009, 07:31 PM
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Originally Posted by unit213
Porting the MAF (or MAF ends) isn't a good mod IMO...especially if you have a 4L60e trans.
ok you got me interested........fess up what you know.
Old 01-04-2009, 08:10 PM
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I hate when people leave posts hanging like that lol. It is just wrong. Did you know that your car will blowup if you install a...........
Old 01-04-2009, 08:40 PM
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No, no, no , no don't do it. Any power gain you get is all in your head.

You'd be better off greasing up you windshield so you can slip through the air better.
Old 01-05-2009, 12:52 AM
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descreen yes, port, no.
Old 01-05-2009, 09:48 AM
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Originally Posted by ghardester
You'd be better off greasing up you windshield so you can slip through the air better.
Wait, are you telling me that doesnt work?!
Old 11-23-2009, 07:38 PM
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Originally Posted by unit213
Porting the MAF (or MAF ends) isn't a good mod IMO...especially if you have a 4L60e trans.
Ok I know this thread is old but I saw this and im wanting to know now. I have a 4L60E and want to know why is this a bad idea for my tranny?
Old 11-23-2009, 09:27 PM
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^^^send Unit a pm with a link to this thread and have him come clear the air......
Old 11-23-2009, 11:05 PM
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ONLY DESCREEN YOUR MAF IF............... YOU NEVER PLAN TO TUNE YOUR CAR. A descreened MAF is a hell of a lot harder to accurately tune than a stock one with a screen.

Also you won't notice it but almost all LT1s and LS1s that descreen end up running richer than they should. You'll see it on your tail pipes.

Descreening a MAF is an old trick from the TPI days when the computers weren't as sensitive as OBD1 and OBD 2 and the 85-89 Bosch MAFs had thick screens on both ends. A LT1 or LS1 MAF screen doesn't inhibit air flow so don't mess with it.







...

Last edited by 69camaross; 11-24-2009 at 08:51 AM.
Old 11-24-2009, 12:10 AM
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Originally Posted by 99bluehawk
Ok I know this thread is old but I saw this and im wanting to know now. I have a 4L60E and want to know why is this a bad idea for my tranny?
if you port the maf, you're destroying a calibrated sensor (not really, but you have to recalibrate it which can be a serious PITA and requires tuning software like efilive or hptuners). problems with the maf typically will have a direct effect on the transmission. its bizarre, but **** gets thrown off and the tranny can start doing things like not shifting or bumping line pressure through the roof, basically killing itself.

i can't remember the EXACT reason it does it, but just search the automatic section for MAF or even "ported maf" and you'll find that i'm not telling you to refill your blinker fluid.

if you're that concerned about your maf restricting airflow, just remove the maf and tune your car to run in speed density.
Old 11-24-2009, 01:02 AM
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According to HP Books
Chevy LS 1/ LS 6 Performance
They didnt put in screens after 2002
My car has no issues, exhaust smells great and no soot on my ex tips
Old 11-24-2009, 01:21 AM
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if u have an air lid and air K&N air filter that catches all the debris and flies and what not and you don't find any bugs or anything at ur MAF screen then go ahead and pop that screen out and port and polish it while ur at it. orrrrr just leave it on and do other free mods ......


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