so there's this idea that the current 605 MAS on the regular lancers and mirages get somewhat restrictive(NA) past 150. thats when they switch up to the 501 MAS for models like the 3G eclipse, 3.5L monteros and above. since the ralliart has 162hp, then it should have the 501 MAS. It should say right on the MAS in 3 big numbers. can anyone confirm?

 

Tell me what the MAS is and I'll check for you lol. I have an 04 RA

 

the MAS is the Mass Air Flow Sensor..it should be connected to your airbox. it is a small bo basically and there should be some kind of cable connected to it. it is between the airbox and the rubber hose thingy leading up to the intake manifold.

 

should be the middle red arrow. its the small box connected to the air box. thanks mitsu.



605 --- mirage, lancer
501 --- galant, 3g eclipse, montero
609 --- older galant, 3kgt, turbo eclipse, evo?

 

allways thinking arn't you kris...pretty soon you will have more other mitsubishi parts than Lancer parts but if it is doable i wouldn't mind finding out myself

 

the 501 MAS is in the mail and going on next week. this thread is just out of curiousity for both the ralliart lancer and mitsu engineering.

true, i might be up ending with more parts from other cars. i have a 1G eclipse TB sitting right in front of me now. i've been told it wouldn't work already, but i'll make it work damn it!

 

okay, saw the thread on RRM's ralliart stuff. there's a big WTF on my face as i think i'm seeing a way different/new design MAS. can you get some pics of the MAS MitsuLancer04, or anybody else?

 

hehe i was thinking that when i was looking under the hood at RRM's ralliart tonight. that some ***** is brand new and SMALLER than the mas on the 02-03 lancer.

the connector looks different but i guess you can re wire that.

 

well, if in the end it's a better upgrade than the 501's, i'll be there picking at it... (unless ROCK says it can't be done ) maybe a 2.75"-3" hotwire setup?

 

the size really doesn't matter when you are talking about a MAS, b/c the smaller the better the ECU can read it. And you engine has a natural vaccume that can pull mutch more than that through the MAS than it can handle. Mitsubishi has made a good choice with the the MAS they used. I'm not trying to cause an argument, but the Mas really doesnt change the performance that much to affect the HP by even 1-2 unless you are pushing more than 300HP. Save the $ and use it on something else.

 

true enough, but i'm a nitpicky *** who always wants better. the different MAS models can be had for $40+. i wouldn't mind spending that much for something i knew flows better, but of course thats just me.

here's the orginal post:

i still take this theory for true and would think best to upgrade to the 501 for guys going NA. for better or worse, i'd love to know why there's a design change for the RA.

 

In my opion that is a rumor, b/c the eclipse turbo has the same MAS and friends of mine are pushing alot more HP and still use the OE MAS. It might add HP to spend the $ on a new one but only a couple hp gain wouldn' be worth it. But if you have the $ more power to you. This coming from a poor person of course. thats the last thing I'll add.

 

the turbo eclipse MAS does use the same technology (karman vortex) as our lancers and look almost the same from the outside, but their design in flow is way different. the turbo eclipse has a totally open MAS with no restrictor plate. the 3g eclipse has a MAS with a 2.75" opening in the restrictor plate. our lancers/mirages have an opening much smaller in total area than both of the above. if those turbo eclipses had our MAS models, they wouldn't be making as much HP as our restrictor plates would (duh) cause a restriction. also, the rear of the turbo MAS has the same oval shape as the front of the MAS which is way much bigger than the 2.75" pipe ours funnel down to. hence, a turbo eclipse has relatively no restriction in airflow whatsoever. forced induction also makes a difference as i was trying to focus on NA upgrades.

I'm not trying to knock your opinion or anything. at this point it's still subjective. but i am trying to focus on the different designs of MAS models with their relation to what cars they come equiped on and why. back to the topic in hand! so whats up with the ralliart MAS? pics inside and out?

 

I will check today when I get off work to confirm. I have an 04 RalliArt

 

nothing yet...