why couldnt the same be done for the supra maf?

 

I tired the STI MAFand 3" pipe... still maxed out at 400whp. I hope SMAY can make it work, im open to try it again.

www.tmrmzine.com/mr2 <--For Sale

 

speaking of that TMR, we need an update on you car.

 

Originally posted by mefarri
Every online part place I find has just "impreza" listed so I guess it could be the same. I'll call the subie dealer tomorrow and see if the part #'s are the same.

Did you call them and what did you find out?

Did you order one?


Seems we don't have these over here:
"the new 2.5L STI US spec MAF"

 

No need for an update, on the Power FC, i am still limited to 350 on pump gas. will probably retune with the alch inj and pump with the PFC and see how far i can push 91 and meth. With the Hydra and C16... Lets just say, its fast :-D

www.tmrmzine.com/mr2

 

Originally posted by TMRMR2
No need for an update, on the Power FC, i am still limited to 350 on pump gas. will probably retune with the alch inj and pump with the PFC and see how far i can push 91 and meth. With the Hydra and C16... Lets just say, its fast :-D

www.tmrmzine.com/mr2

what compression are you running? and what maf ID tube size?

 

Im at 8.8-1 and I am running all 3" IC pipes all the way to the throttle body.

www.tmrmzine.com/mr2

 

will a tuner know how to re-scale the air flow curve to make this work, or am i going to run into another supra jam??

 

you only ran into the supra jam because your tuner was lazy. they get paid to tune, let them do it.

 

i'm thinking about trying the Subi MAF in the 'modified' corkys tube, so do you think i will be able to do what i want with it?

I would attempt to have them work the supra MAF issue out again but it would wind up costing me an arm and a leg, not that i have either of those left anyway :|

The last guy that attempted the supra MAF on my car tried for 5 hours and got no where- removed my front bumper and scratched the quarter panels with his hoses n shit but only charged me 100, so i kinda let it slide.

He was a lazy turd

 

Why'd he remove the front bumper?

 

you know, i did offer to send you my tune as a base map... :wink:

 

i alread had a few supra maf tunes.... did not work for him either... what a tard!

 

Denso part number for the WRX STI MAF:
197400-2090
Our stock part number is 197400-2030

Subaru part number for "MASS AIR FLOW METER FOR 2004-2006 IMPREZA ALL" 22680AA310

 

anyone wanna check if the new 2.5 wrx uses the same maf, i have one of these and never tried putting it in since i was told ours and the sti were the same, but i see now the part number is different than what i was told previously so i will try it eventually, should be some good potential for it if you can make 400whp no problem on the sti w/it.

 

it would make sense since toyota owns the majority of subaru now...

 

opcorn: :flame:

 

i never understood the popcorn icon

 

really? Its means i'm gonna hang around and look into this tread some more- whats a better 'chillin' food then popcorn!

 

Yea, but opcorn: + :flame: =

 

what has this site come to :roll:

 

Originally posted by Jesse IL
As far as re-tuning for this MAFS, technically there shouldn't be really that much you need to do. The airflow curve should simply be sfifted by a straight percentage compared with the stock sensor. What you should be able to do is take a log at idle, once you get a steady idle that is and your MAFS voltage stabilizes. Since there will be slight fluctuation, just take an average value over time.

Next, pop in the STi MAFS and do the same thing. It will drop to a lower load cell since its reading less airflow, but you know that it has to be flowing the same amount of air since you're running the same rpm. Just bring in a bit of fuel to bring the AFR up to where you were and again, look at your average voltage.

You take V1/V2 and you'll get a number a bit greater than one. Then you just take the whole airflow curve, multiple every cell by the number you just got and paste it into Option 2 or wherever you want. Car should run exactly the same.

Did you try this? Did it work?

Seems like the Subaru MAF and our MAF don't have the same airflow/voltage curve. Get it right at one point and it's off elsewhere, if done like you said. :?

I don't have the stock sized pipe anymore though, so I wonder if that makes a difference..?

I was wondering if I run both MAFs at a same time, running the PFC from the stock MAF and just datalogging the voltage from the Subaru MAF. They both would flow the same air at a same time, right? And should be easy to get the curve for the Subaru MAF through that, right?


Also, anyone know the engine codes for the Subarus with these MAFs? Or more importantly, is there a PFC version for these?

 

Originally posted by Tem
I was wondering if I run both MAFs at a same time, running the PFC from the stock MAF and just datalogging the voltage from the Subaru MAF. They both would flow the same air at a same time, right? And should be easy to get the curve for the Subaru MAF through that, right?

Sheer genius. All you need is a tube with two MAF mounts.

 

the intake piping diameter will have a big affect on the MAF.


So still not 100% confirmed if this Subi MAF is indeed different?

 

Originally posted by FriendOfSpyder
the intake piping diameter will have a big affect on the MAF.


So still not 100% confirmed if this Subi MAF is indeed different?

I'll be putting mine in next weekend. I can data log the pre-subi maf voltage with the Profec to verfiy but I'm sure it will be a very noticable difference if it works.