Ported MAF

[slowbird]

So I got a spare MAF from my buddy for $20. My friends at Power Shop Porting service did me a favor and ported the pieces for me.

I have yet to try it...I'm gonna wait till it's nicer out before I do.


http://img294.imageshack.us/img294/9611/maf001sml5tg.th.jpg (http://img294.imageshack.us/my.php?image=maf001sml5tg.jpg)

http://img294.imageshack.us/img294/7089/maf005sml5sq.th.jpg (http://img294.imageshack.us/my.php?image=maf005sml5sq.jpg)

http://img294.imageshack.us/img294/4241/maf007sml1km.th.jpg (http://img294.imageshack.us/my.php?image=maf007sml1km.jpg)

http://img150.imageshack.us/img150/7528/maf008sml3bk.th.jpg (http://img150.imageshack.us/my.php?image=maf008sml3bk.jpg)

http://img150.imageshack.us/img150/5323/maf009sml0md.th.jpg (http://img150.imageshack.us/my.php?image=maf009sml0md.jpg)

http://img150.imageshack.us/img150/9913/maf010sml8ig.th.jpg (http://img150.imageshack.us/my.php?image=maf010sml8ig.jpg)

http://img150.imageshack.us/img150/9682/maf015sml9bz.th.jpg (http://img150.imageshack.us/my.php?image=maf015sml9bz.jpg)

[eric99gt]

Won't do anything. If anything you may see a decrease in hp. Car ran lean after I did mine. You're not flowing enough.

[slowbird]

I heard otherwise.

MAf debate (http://www.gaownersclub.com/forum/showthread.php?s=&threadid=45538&highlight= Ported+MAF)

...and saying the 3400 engine doesn't flow enough to take advantage of a higher flowing MAF is saying that it doesn't flow enough to take advantage of a better flowing Intake or Airfilter.

[ihatemygrandamg]

Ive heard both sides of the story. More say theres a decrease. Just like a bigger MAF, which has to be calibrated right to really see good gains. I was planning on this until I heard the feedback

[sunrunner_pei]

You've already got it. Try it out and wee how it does for you.

For the record, I happen to have had good experiences with my ported/polished MAFS.

[99GrandAMSE]

Originally posted by sunrunner_pei
You've already got it. Try it out and wee how it does for you.

For the record, I happen to have had good experiences with my ported/polished MAFS.

... exactly, worked for me and no one is going to convince me differently :)

[eric99gt]

Originally posted by slowbird
I heard otherwise.

MAf debate (http://www.gaownersclub.com/forum/showthread.php?s=&threadid=45538&highlight= Ported+MAF)

...and saying the 3400 engine doesn't flow enough to take advantage of a higher flowing MAF is saying that it doesn't flow enough to take advantage of a better flowing Intake or Airfilter.

No with a CAI you're not flowing any more than stock. You're just removing restrictions. The MAF is not a restriction. But as Kelly said go ahead and try it. It won't kill anything. But if you're going to say it provided anything be sure to have some dyno numbers or something of the like. I've looked at my fuel trim numbers with both the stock and the ported and the ported was running the car lean.

[99GrandAMSE]

HAHA ... we have been down this road before Eric so I'm keeping my mouth shut but you already know my feelings :) :lol:

[eric99gt]

Very true Kelly....I did agree though. Go ahead and throw it on and see whatcha think. Not like you're spending money.

[slowbird]

yea...I'll throw it on and see what it does.

I'll post my experience with it. :)

[flyhigh2chill]

Why not go with a Granatellli MAF? I know they cost a fortune but they seem to be a decent company.

[slowbird]

Considering I got the MAF for $20CDN...and I still haven't paid the guy the $20 yet.

The porting and Polishing was free and done by someone else...and the Large baffle/fin in the MAF was Professionally cut out...for free...

I wouldn't spend very much money at all on this MOD....if it actually does make a difference, it will be very small indeed....but well worth the price I paid. (Which at the moment is Zero dollars)

[xxbackhillxx]

Eric is right. To be restrictive the maf has to be smaller in diameter than your current TB.

When I measured it out I think it came out to be bigger than even my 62mm tb and about the same diameter as the dr speed tubing. Even with a 65mm tb it would be hard to outflow our stock MAF's.

Another problem with removing the screen and fin is it throws off the flow of air through the MAF and the sensors don't function properly. Tuning for it would be nearly impossible.

For $20 thats a pretty good deal though.

[99GrandAMSE]

... still not going to say anything!!!! :bolt:

[slowbird]

Originally posted by 99grandamse
... still not going to say anything!!!! :bolt:

;)

It's better than starting an argument. You can PM me your personal experience with the Ported MAF if you'd like. I'd love to hear it.

[tejohnson]

If you make changes to the MAF, then you really should make changes to the PCM and raise the MAF tables. It is much easier to buy an LS6 MAF (which includes the IAT), or an LQ4 MAF (which is just bigger) from a junk yard and put in the new MAF table into your calibration...

[slowbird]

Originally posted by tejohnson
If you make changes to the MAF, then you really should make changes to the PCM and raise the MAF tables. It is much easier to buy an LS6 MAF (which includes the IAT), or an LQ4 MAF (which is just bigger) from a junk yard and put in the new MAF table into your calibration...

Technically if you do ANY mod you should plug into the PCm and make changes but I'll let the computer do the best that it can manage without me messing with it......for now.

[slowbird]

I installed it yesterday evening.

I noticed the car seemed to pull a bit better in the top end.

I know people may say otherwise...and some may agree...but I noticed a slight improvement in the Top End.

Not worth spending much money on...but for the $20 I spent...It's worth it.

[99GrandAMSE]

Originally posted by slowbird
I installed it yesterday evening.

I noticed the car seemed to pull a bit better in the top end.

I know people may say otherwise...and some may agree...but I noticed a slight improvement in the Top End.

Not worth spending much money on...but for the $20 I spent...It's worth it.

... thank you!! :)

[slowbird]

Originally posted by 99grandamse
... thank you!! :)


No! .....thank YOU!

...for giving me the idea.

[TA^Guy]

Originally posted by xxbackhillxx
Another problem with removing the screen and fin is it throws off the flow of air through the MAF and the sensors don't function properly. Tuning for it would be nearly impossible.
Thats your assumption.

I can show one very good example from GM that says that is false, however everytime I post it I still get those that know more than GM engineers, so I'll just keep my knowledge and information to myself.

[RedGrandAm2003]

:lol: awww john, cmon.. we can make fun of the king sh!ts :lol:

I bent my MAF screen on one area.. i was tempted on removing it... but meh.

[xtremecold]

I removed my MAF screen 2 months after I got the car ( back in 2002), i havent had any problems at all, it never has messed up anything.... just my experience. But anyhow i am going to be getting a granatelli MAF comiing in the mail soon, so i will c if it does help me with any gains, The company told me i could see anywhere from 8 -12 whp just from this MAF due to its different calibrations. I seriously doubt it, but i would be happy with just like a 5 whp gain lol.

[sunrunner_pei]

Originally posted by slowbird
I installed it yesterday evening.

I noticed the car seemed to pull a bit better in the top end.

I know people may say otherwise...and some may agree...but I noticed a slight improvement in the Top End.

Not worth spending much money on...but for the $20 I spent...It's worth it.

Those are my exact thoughts and experiences. Thanks for sharing. :)

[Old Guy]

Originally posted by xtremecold
I removed my MAF screen 2 months after I got the car ( back in 2002), i havent had any problems at all, it never has messed up anything.... just my experience. But anyhow i am going to be getting a granatelli MAF comiing in the mail soon, so i will c if it does help me with any gains, The company told me i could see anywhere from 8 -12 whp just from this MAF due to its different calibrations. I seriously doubt it, but i would be happy with just like a 5 whp gain lol.


Well, I hate to be the bearer of bad news but unless they made some major adjustments to what they had been selling for the 3400 be prepared to send that MAF back. I had one and they never did get it to work right. My track times were .5 seconds slower with the Granatelli MAF and my gas mileage went down by at least 4 MPG.

The only MAF that I'm sure is properly calibrated for a 3400 is from Pro M. I know it's right because my car was the vehicle that they calibrated it with. Unfortunately it seems as though they're not around anymore, but I'm sure if you looked you could find a MAF for the 3400 somewhere.

http://www.gaownersclub.com/forum/showthread.php?s=&threadid=10136&highlight=pro+m

[xtremecold]

Im actually buying it off someone who had it for quite a while. like since 2003 or 2004 so it may be good. From my understanding for a lil while pro m was helping calibrate the mafs for granatelli is this true?

[Old Guy]

Originally posted by xtremecold
From my understanding for a lil while pro m was helping calibrate the mafs for granatelli is this true?

There was a trime that they did calibrate them for granatelli, but that was before they got the calibration from mine.

The first Pro M MAF I got actually made the car run too lean. That's when I called them and we got together to get the calibration right. Proir to that the numbers they were using to calibrate the MAF for the 3400 was actually the same as the 3100.

[12DMN8]

well now I am confused...I just bought a dr. speed cold air intake off of ebay and a granatelli MAF cold air tune and i am gonna be upset if my car runs lean or runs slower.I figured a big company like granatelli would make a good MAF for the grand am.I hope I didnt buy junk.

[rys99grandam]

My Big problem with attempting htis mod ( I have a spare MAF hanging out ) is that removing the mesh, wont it leave the poteinal damage of those little circuit dillys?

[Patchez]

Originally posted by rys99grandam
My Big problem with attempting htis mod ( I have a spare MAF hanging out ) is that removing the mesh, wont it leave the poteinal damage of those little circuit dillys?


.....that's what the air filter is for. I found that removing the "mesh" that controls flow over the sensors of the MAF will affect idle but once rolling all is good!
In seeing a lot of GA stock tunes in action I have found that for the most part the factory tunes seem to be rich from about 9 and as high as 17%. If the MAF you use brings that down a little that would be a good thing as far as I'm concerned!

PS> I have a Pro-M MAF if anyone would like it, make an offer! PM me if you would like, and I can give you any info you need!

[HondaCivicsSuck]

[QUOTE]Originally posted by slowbird
[B]So I got a spare MAF from my buddy for $20. My friends at Power Shop Porting service did me a favor and ported the pieces for me.

I have yet to try it...I'm gonna wait till it's nicer out before I do.


dude.. take it from me.. i have one of the quickest cars here with not.hing done because i have my car set up right... do not port ur MAF u can take the screen out but dont port it... do u have a CAI? if so leave the MAF sensor alone... if u still have ur stock airbox like i do then take the screen out and gut the airbox... it looks like you want to run faster then 14.5 so if i where u i would get headers CAI ported milzy intakes upper and lower and a ported TB from him with a new retune. that sould get u down to about 14.3-14.4 maybe 14.2 if am driving :lol: j/k next get the cam and heads i hear they are amazing for the 3400. tranny should be fine untill u get past 13.9 or so depending on how much you beat on it, flush it keep the fluid fresh

Joe

[HondaCivicsSuck]

Originally posted by slowbird
I installed it yesterday evening.

I noticed the car seemed to pull a bit better in the top end.

I know people may say otherwise...and some may agree...but I noticed a slight improvement in the Top End.

Not worth spending much money on...but for the $20 I spent...It's worth it.

How do you know ur not running to lean! i would have a tech2 hook up to the can and scan it

[eric99gt]

woot...old thread. Hey slowbird how bout those before and after dyno numbers lol.

[rys99grandam]

How does it affect Idel? Slightly rough?

[99GrandAMSE]

... no change in idle to mine

[TA^Guy]

Originally posted by eric99gt
No with a CAI you're not flowing any more than stock. You're just removing restrictions. The MAF is not a restriction.
Um if your removing restrictions, then the motor will beather easier, hence more air flow.

That is like saying removing a stuck marble in a garden hose won't make it flow more...
Originally posted by eric99gt

But as Kelly said go ahead and try it. It won't kill anything. But if you're going to say it provided anything be sure to have some dyno numbers or something of the like. I've looked at my fuel trim numbers with both the stock and the ported and the ported was running the car lean.
That maybe just your car too. Take 10 Grand Ams all with the 3400 motor and check the fuel pressure of each one and you'll end up with several different readings.
If yours was buring lean did you ever try a AFPR and turning up the fuel pressure?
Originally posted by HondaCivicsSuck
[QUOTE]Originally posted by slowbird
[B]if u still have ur stock airbox like i do then take the screen out and gut the airbox...
Joe
Wow I have heard of the gutted airbox in years. I remember when I did mine everyone questioned me about it, after it was done several others did the same thing. Infact I still have my gutted airbox in the garage. lol

[slowbird]

Woah! Old thread.

I've noticed ZERO I'll effects from my car after installing my Ported MAF.

How do I know it's not running lean...well ever since I installed the MMS PCM my car smells more rich then anything. At WOT I highly doubt the car is running lean enough to cause any issues.

As far as I can tell the car is running fine. My idle is fine too. I already mentioned that I felt a little bit more top-end from this Mod which is what others have confirmed with their P&P MAF's.

I installed this mod in Feb and went to the track a few months later. I posted a slightly better time...1/10th quicker.
My only additions were my CF hood and the P&P'd MAF. The weather was warmer then my previous time, and my car had more wear on it...but you never know. Maybe I lost weight over the winter?!?

Track day after MAF install (http://www.gaownersclub.com/forum/showthread.php?s=&threadid=58589)

I would like to get the car Dyno'd one of these days...maybe get an A/F reading though I doubt it'll show anythting odd.

All I know is that I installed the P&P'd MAF and I've had no problems with it. To tell you the truth...I forget I even have it. When I list my Mods and all that jazz...I forget it's there. For the Zero dollars I spent on it. (Zero cause I haven't paid the guy the money yet for the MAF) it's a fine Addition.

[slowbird]

Hey 12DMN8,

If you want to talk more about drag racing and need tips/advice. Let me know. I got a 2004 aswell. Our engine have slight advantages too.

Pm or e-mail me and we can talk about your times and mods etc.

heartsfall@hotmail.com

[ihatemygrandamg]

Slowbird you know your car is slow and you cant launch for crap even in an auto. J/k lol

Ill pm you if I make it back to the track before they close for winter. Got more mods coming ;)

[slowbird]

Originally posted by ihatemygrandamg
Slowbird you know your car is slow and you cant launch for crap even in an auto. J/k lol

Ill pm you if I make it back to the track before they close for winter. Got more mods coming ;)

sweet. I'm hoping to make it back one last time also.