MAF Question...

[XiKeiyaZI]

So.. this might seem dumb...

What's the size of a Stock 2G MAF?

I know a common upgrade is a 3in GM MAF... so.. I take it ours is.. how large?

Depending on the answer.. I have an interesting find.. @__@;

 

[GSXSixteenG]

I don't think its a matter of size of the sensor, its that it only has the ability to meter 45lb/min before it becomes unreliable.

 

[XiKeiyaZI]

Well.. See...

I went to get a replacement filter yesterday because the one on this one is shot. The 4in filter wouldn't fit without any of the inserts in it. I took my older filter.. and my old filter fits over it by 1in.

So... our Filter inlets are 5in?....Or did the PO possibly slap a huge MAF on this thing? >.<;;

 

[GSXSixteenG]

Hmm, I thought it was around 4.5 inches if you have the stock 2g mas. That would about the width of the rectangular opening.

 

[XiKeiyaZI]

Rectangular? ...

Jesus.

xD All I know, is that I went to replace the filter yesterday and grabbed a 4" because I jusy eyeballed it. Took it outside and went to put it on and it was about an inch too small. I could fit the thing inside of the Circular opening. So I took my old filter and the new filter fit perfectly inside of it. I mean, it could be 4.5', but I just found it odd.

Just wanting to confirm the size of our MAFs because I'm trying to get rid of a small miss/backfire issue I'm having.

That should be what it looks like, correct? Cause.. mine doesn't. Is there a circular plate adapter that fits over that, or what? ... Cause mine is circular. @_@

 

[GSXSixteenG]

Rectangular? ...

Jesus.

xD All I know, is that I went to replace the filter yesterday and grabbed a 4" because I jusy eyeballed it. Took it outside and went to put it on and it was about an inch too small. I could fit the thing inside of the Circular opening. So I took my old filter and the new filter fit perfectly inside of it. I mean, it could be 4.5', but I just found it odd.

Just wanting to confirm the size of our MAFs because I'm trying to get rid of a small miss/backfire issue I'm having.

Actually, are you talking about the stock air box? I'm was talking about the opening at the end of the mas. Its rectangular like below..

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Edit.. Beat me to the picture.. But, yes you must have an adapter on it already.

 

[XiKeiyaZI]

Yeah.

I just googled "2g MAS Adapter plate " And saw results everywhere for 4.5'in.

Grreeeaat... Here goes $60 for a damned 4.5'in Filter.

Well.. If anyone else has this issue, they can at least search an easy title and find this thread. =/

Wait...

Could the added airflow be contributing to my somewhat lean condition? I know that if I accelerate too hard in 2nd gear that the car stumbles.. but if the acceleration is more moderated, the car pulls like a champ. 3rd gear has no issues as it takes a bit longer to climb the RPM Range. So a 4.5in Intake coupled with a 14b Turbo on a 2G could lead to the issues I'm having? At least contribute to them. I've almost got it resolved, but there's one or two more things that I need to figure out, maybe this one is it?

 

[GSXSixteenG]

I doubt the filter would really cause the misfire. Maybe trying removing some of the honeycomb if your afraid your over running it, which I doubt, or adjusting the plastic screw on the bottom.

http://www.roadraceengineering.com/eclipsetech/2gmasadjustment.htm

 

[XiKeiyaZI]

Hrm... So 15ish PSI on a 14b with a slightly larger intake amount wouldn't stress the system?

I'll try the above link and give it a shot.

Will removing the Honeycombs cause any adverse effects?

 

[EclipseTical]

Don't mess around with either the honeycombs or the MAS calibration screw until you get some way to and monitor your engine and a WB o2.

"Hacking" the 2g MAS tricks the motor into leaning out the a/f curve while adding timing and can cause havoc with your idle.

 

[XiKeiyaZI]

Didn't plan on removing the Honeycombs. Just wanted the side-effects. I know 1G mods Vs 2G mods are different.. @__@

As for the screw.. I did just take off my MAF and checked it. It was screwed all the way out. I screwed it in a few turns and the car likes it a WHOLE lot better.

Somehow.. I'm overrunning the Injectors?

 

[boosteclipse]

Another arkansan dsmer. Get to needin some bigger injectors I have a set of rc 550's as well as other goodies i'd make a deal on.

 

[XiKeiyaZI]

No bigger injectors for me until I get Link.. ^^ Hopefully next month.