mzmtg

iTrader: (11)

I'm both bored and broke, so I'm always looking for cheap ways to mod. Would porting my MAF make a noticeable difference? I just want to cut down the "bottom half" of the huge post in the middle of the sensor. This would remove a thumb-sized impediment to airflow. Seeing as my engine as all stock, I'm guessing this is not worth the time/risk involved.

I figured as long as I'm in need of a $100 knock sensor, I might as well mess with a $500 part that the car cannot run without...

njmaxseltd

iTrader: (19)

If you change the MAF's port size in any way it will throw off it's calibration. More air will get past it without being measured which could cause a lean condition. Then your o2's will detect it, adjust the ECU. Hummmm on second guess, maybe it will work..

Then agian, it could cause a hesitation.

I think you should try it and give us some feedback.

mzmtg

iTrader: (11)

Ok, I'll go for and report butt-dyno results...

But, in case it all goes to hell, I'm starting the "buy Ben a new MAF fund."

My PayPal ID is bennett.garner@normentind.com

All contributions are appreciated

njmaxseltd

iTrader: (19)

96sleeper

iTrader: (4)

if you figure up the area, the TB is still the smallest part in the intake tract. Even when you take into consideration the screen as a 15% blockage and take the area of the top and bottom post, it still flows more than the stock TB. I had the same plans but when we took it off and started measuring, I realized that there was use without a larger TB.

MardiGrasMax

iTrader: (14)

I did this a few k miles ago, no noticable loss of drivability. As far as a power gain, theoretically yes, but I have no proof. I took a hack saw blade and one sided blade holder and sawed off the lower post. Then I used a dremel to clean it up. FWIW I have been doing allot of highway driving recently and am still getting 26-28mpg.

NmexMAX

iTrader: (22)

I thought you already changed your knock sensor just recently? Didn't you run a 16.xx before the k.s, and the 15.2 just after you replced it?

Back to the subject, is your screen removed from your MAF? I always wanted to try out this mod, or something similar to see the gains, because after my MEVI, I'm quite broke.

mzmtg

iTrader: (11)

No, I ran a 16.xx my first time at the track and ran a 15.2 after I learned to drive and the weather got colder.

96sleeper

iTrader: (4)

I read everything I could read on the internet about removing it, and I decided to remove it. I sanded the end where the screen was and got rid of all of the rough edges and made it into a kind of venturi shape. I have noticed no ill effects, but I also didnt notice any gains from it. We figured it to be about a 15% restriction in airflow, but like I said earlier the throttle body is still the most restrictive part in the intake. Someone needs to come out with a 65mm throttle body for us N/A guys. I dont really see spending $200 to get mine ported to 63.5mm and still not have it the size I want. I mean come on, they make 68mm throttle bodies for civics.

turbomax97

iTrader: (6)

yeah i've got a spare maf if urs dies =)

DaddyMac

go ahead and port it, then I can sell my MAF

Nismo87SE

Porting the MAF is only good if your topping it out. The se-r guys sometimes port the stock maf to raise the limit from 260whp to 300whp. After that most go with a cobra MAF or Z32 MAF. From what I seen the stock maf should be fine for 300-350whp.

mzmtg

iTrader: (11)

Um, what have you "seen" about the horsepower limits of the MAF on a 95 Maxima?

Bags

iTrader: (3)

I am assuming you have seen mardigras posts on the pathfinder TB?

I also agree with you 100% a ford focus can get a 70 mm TB.... and a V8.

Again reasons to mass email companies..lol

henock

is this what you mean: http://www.greghome.com/Greg's%20Garage/1999%20Nissan%20Maxima%20SE/MAFSensorMod.htm

if so, read the article, if not, ignore me

BEJAY1

iTrader: (19)

Sorry to exhume this from the dead but I just read about a 65mm TB on B13 models.
http://www.nissanforums.com/showthre...threadid=10516
I read the 70mm Pathfinder was a bit too large so maybe one of these will bolt up too?

Broaner

iTrader: (10)

Alright, lots of things.

1. I removed my screen, from my pipe that is, because it had rediculous amounts of resin on it. No, I removed my MAF screen because I did a homemade intake. All is good so far. Done almost a thousand with not problems. Couldn't tell gains because I did it at the same time as the cone.

2. Why even consider 63-68 mm TB mods when u can get a 70mm TB from a salvage Pathfinder for nothin'.

3. I would be interested to get the real stats on chopping the MAF with a diff TB.

JSutter

iTrader: (46)

I cut the MAF intake adapter plate off all together. I was too cheap to buy a MAF adapter and too stupid to think of the HAI thing. Anyway removing the screen did nothing 4 me and its been about 40,000 miles since i did it with no problems (I think).

BEJAY1

iTrader: (19)

[QUOTE]Originally posted by broaner22
[B]Alright, lots of things.
2. Why even consider 63-68 mm TB mods when u can get a 70mm TB from a salvage Pathfinder for nothin'.
a) MardiGrasMax mentioned he could only open up the intake port to like 67mm
http://forums.maxima.org/showthread....hreadid=141403
b) The Pathfinder TB required a bit of work to install ie plate, spacer, etc. - not a direct fit
c) I'm not running 300+hp and don't need that large. Other boards mentioned losing air velocity and response through the system going too large over stock.

krismax

iTrader: (15)

[QUOTE]Originally posted by BEJAY1
[B] One thing you mhave to relize is the stock throttlebody for are cars isnt any bigger really than a sentra or b-16 engined car, trust me when i put it on it was a noticed power gain and ran lean, for a fact.I think thats why my headgasket went and probably still are running lean, all 4 of my fuel trims are at +21%. At idle my scan tool was even showing increased air flow.
I opened mine more than 67mm i put mine more into the bend.

96sleeper

iTrader: (4)

I never could find a TB from a S13, I looked and they are too rare. I ended up doing the pathfinder TB and it feels good so far, haven't verified gains at the track though. I opened up my intake manifold more than 67mm as well.