RomRaider

Hopefully I just picked up an AEM CAI with a dryflow filter. I did alot of checking around on here and nasioc about it, and seems it needs to be scaled in the higher flow regions. Does anyone have any advice, I have not scaled my maf before and not really sure where I will need to start.



TIA
Jerod

Ok no love...

Well I picked one up for $55 to my door. Filter needs cleaned, but its good to go. I'm going to paint it with ceramic heat resistant paint and wrap it with intake wrap (no heat soak hopefully)

Did I waste $55? Are there actually gains to be had with proper maf scaling and an AEM CAI?

I won't be running it all winter, just when the weather is consistent (no snow)

I plan on making a sort of filter box, basically an aluminum 1/2-3/4 box that shields it from the wheel and bottom, to hopefully deflect what little liquid will get into the inner fender.


Anyone....>!

It will make more power on a larger then VF40 turbo, on a VF40 I don;'t know.

I run mine through all kinds of snow, no problems. Big puddles can present a problem. Either avoid big puddles or maybe your box will work.

I would use the maf scaling tab to tune closed loop. I usually run this several times. You will need to align your afrs by scaling your maf in open loop till the AFR's measured with a wideband are close to your open loop targets.
Don't attempt this without a wideband. For example...Even if things appear to be about a 10% increase in MAF g/s through closed loop these trends may not continue through open loop.

from personal experience... my stock MAF scalings were very close to what I ultimately ended up with. my largest corrections were well within the stock O2's reading range. I think I may have adjusted by 5% max. This intake has been lauded for its ability to be a truly bolt-on, and I find no evidence going against this.

Did your IAT's drop? Did you notice a rise in load or maf g/s in the higher revs?! Basically was there a noticeable loggable difference in the intake?

Received the Aem CAI today, LC-1 Will be here tom.

So.. The intake had a hole rubbed in the bottom of it... Not what I wanted, low temp aluminum welded it shut, ground it smooth and ceramic coated it.

This is the original AEM CAI with the MAF location on the top of the intake... This is still scalable correct!?! Any advice before I begin? I will post up maf logs as soon as its on and the wb02 is on...


Thanks again

Jerod

so I had to fix the hole in the intake.... awesome cleaned it and ceramic coated it and wrapped it. This is the old style intake that alot of people had problems with. I had to take some timing out of the .7-.9 load range around 2-2.8k. I had to take 2.5% wgdc out because it was over boosting...

That, to me, is a good sign, which tells me there is less resistance prior to the turbo. Wouldn't that mean I increased VE? Giving the turbo less resistance on incoming air to make the same amount of boost?

At any case I'm knock free, my LC-1 showed up today and will be going in hopefully tom. night *anyone have any advice on power source and location for it!? I'm thinking somewhere under the glovebox or center console*

I ran the maf tab twice, not for very long as I don't have a lot of time for it today, but I know its pretty scattered, but my learned corrections are closer to 0 than the stock box...

Someone please please get me started on this, I know at the 1.9 load area it looks perfect but then rises as the voltage goes up and drops as the voltage going down. This tells me the diameter of the tubing is slightly larger. I mic'd the piping in both and came up with a 1.45% increase in pipe size AT the maf. The only thing I'm scared of is turbulence and inconsistency....


Thanks!

Jerod

Ok now I need help, I have about an hour of driving with the Closed loop Fueling maf/injector scaling tool. Someone please help as I done exactly what it said to do, but I don't know what to do after that... I half ass comprehend what is going on, just not how to make corrections... This is a 2002 wrx with stock maf scaling and an original AEM CAI... Is this fixable?!?!


Please help!

Jerod

BTW, I am pulling my DP tomorrow morning and getting my lc-1 setup.

35 views last night and no love?!

Got the LC-1 Hooked up... Anyone notice anything strange????

Target AFR at 2.2 load is 10.6.. How am I not knocking!??!?!?!

Btw,

Learning range A: -.26 B: 0 C: .78 D: 0

NO knock NO IAM drop, nothing weird best its ever drove and LC-1 follows very close to stock 02 until OL....

You should post your car details and your rom.

What is the ecu reported atmospheric pressure?

I have seen cars run on AFR 11.7 without knocking. Maybe lower timing? Maybe better gas?

I would adjust your MAF scale so that it is closer to your AFR target. It doesn't have to be exact, but I like it to be closer.

What is your target AFR table? Is it a constant 10.6 everywhere?

2002 wrx.. XPT GMBCS stage 2.. only thing left of that map is the OL fueling.. and I've made some corrections (leaned it out to correct some rich knock)

I have NO knock anywhere Timing is around 15* at peak torque (2.35 load) I have the closed loops scaled I think... My maf scatter is within +/- 4%.. As far as I can tell my scaling is better than the stocks was.

Everything seems to be fine, but its freaking me out that I'm running so lean..

Atmosphere was 14.36 today and Ambient was in the mid 80's.. Could I have a post OE o2 Exhaust leak?!?! The wb follows the stock 02 spot on until I go into closed loop and it stays leaner than the stock o2.

I haven't scaled out my Maf in OL yet... and. I should be around 11-1 at peak torque and richening out to 10.6-1 at redline... not happening....

What do you tihnk

BTW, 17.3lbs is target... timing is slightly conservative... and its a 5mt..

The knock was my fault.. gf was screaming at me and i put it in 5th at like 35 and laid on it... I rarely ever ever roll on in 5th... So ignore the flkc..

You need to post your rom or your AFR target table.

And I doubt your FLKC is due to you punching it in 5th since that would push your load higher than that.

The FLKC in that cell is on just about all 2002-2003 WRXs that I've seen. On pwrx's wrx, his IAM drops in that cell instead of activating FLKC.

Well, I spent about 4 hours in the past 2 days logging trying to figure out my maf scaling. and in every gear. NEVER had ANY fbkc or flkc during those four hours. And it wasn't all closed loop either, there was some OL driving. The only thing that has changed from now to then is my LC-1 and my damn exhaust bumping my carrier again (put it together too quickly and fixing it in the am)

Anyway you have a PM