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MAF swap - rhyzin, HobieKopek, pjal84

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Old Feb 22, 2004 | 03:46 PM
  #46  
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^^ thats what i have...
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Old Feb 22, 2004 | 03:48 PM
  #47  
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rpw turbo.. or that fpr?
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Old Feb 22, 2004 | 04:17 PM
  #48  
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fpr... still going to see how far NA can go on the lancer. it would also make a stage 1 more effective when i do happen to switch over. i still have a lot to go.
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Old Feb 22, 2004 | 07:05 PM
  #49  
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Are you sure the E8 MAF is 399? A couple months ago, I drop by the dealership to talk to a salesman. He popped the hood, and I saw any 2g DSM or 3KGT VR4 would have: a huge, oval 609 MAF.


Rhyzin,
If you can find slightly bigger injectors like in the 270-280cc (not going to say 300cc w/o adding a cam upgrade), I do believe your gains will be bigger to match the bigger MAF.
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Old Feb 22, 2004 | 07:13 PM
  #50  
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i'm saving up about $100 and try and grab those h22 injectors to see if they fit. if not, i'll grab 320's out of a celica gts and try that even though it'll be too much. my roommates friend turboed his celica and the injectors have been replaced.

yanno, i assumed the exact same thing, then i saw this in person.
https://www.evolutionm.net/forums/sh...threadid=65684
(i just dug this up now. up until yesterday, i assumed they had the 609)

Last edited by rhyzin; Feb 22, 2004 at 07:15 PM.
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Old Feb 23, 2004 | 07:38 PM
  #51  
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You know what . . . it could be a Cali spec E8 using a smaller MAF. I have never seen such before in my life, unless the existance of cali spec 2g DSM (never seen in my life).

It looks like it uses the smaller pin plug. If I have the time, I'll visit a mitsu dealership this weekend; w/ permission, snap a pic of the motor.

As for th H22 injectors, make sure it's the last gen prelude. Might want longer bolts to hold the fuel rail and new o-rings (most important).
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Old Feb 23, 2004 | 08:01 PM
  #52  
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my roommate has a 2G dsm and i'm sure it's cali spec for obvious reasons. they've got the big *** 609 and i've never seen a 399 ever on dsm boards. i'm sure my roommate would have seen one before as well and wouldn't be as surprised as i was when we saw a 399. they're also on at least 3 dsm boards 24/7.
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Old Feb 29, 2004 | 11:16 AM
  #53  
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Hey guys I've got a newb question. If you calculated the percent change in airflow for the 501 MAS upgrade, then added the same percent change in flow in the fuel system would you have to have an afc? I mean wouldn't the ratios still be the same and therefore the stock ECU maps would work. Let me know if I'm smoking crack on this or something.
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Old Feb 29, 2004 | 11:51 AM
  #54  
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unfortunately, it doesn't work that way. when you enlarge any kind of opening, flow characteristics change. the usual trend being that if you enlarge an opening, you lose low end torque but gain high end hp, and vice versa. if you made a device that added, say, +10% fuel increase across the rpm band and put that together with the larger 501, you may end up really rich in the low rpm and lean in the high rpm. something adjustable like the safc would be needed.

Last edited by rhyzin; Feb 29, 2004 at 11:55 AM.
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Old Aug 17, 2004 | 05:13 PM
  #55  
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I'll check on the 399 MAF, and I might have a lead on something. Gotta compare my notes.


Remember the new 3g eclipse GTS has a slightly bigger MAF. Don't have the #.
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Old Aug 19, 2004 | 02:59 PM
  #56  
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Ok, i'm trying to follow the conversation here and getting lost in places. I'm looking to push my NA Lancer up a few notches and this seems like a good way to do it without FI.

Basicly I'm figuring this: Get a 609 MAF, some injectors (DSM 240cc? Bigger?), a higher flow pump (lpm?), Apexi SAFC, FPR.

Is it possible to tune the A/F ratio correctly at low/ high RPM to compensate for the higher airflow? Assume a good intake and cat delete.

This stuff seems to be a little over me and I think i'm diving into the deep end here

Edit: after some more deep reading it sounds like a 609 MAF and an AFC is enough to get some extra power out of my engine. Throwing it on a dyno and getting someone with some understanding of AFC to tune it should get the job done.

Last edited by psy-q; Aug 19, 2004 at 04:49 PM.
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Old Aug 19, 2004 | 09:32 PM
  #57  
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i think the best thing so far (easiest/safest)

just get a 2g gsx fuel pump, and 501 MAF(out of 3g eclipse or older galant) and s-afc to tune

what kind of FPR to get though? 1:1 if staying N/A?

gonna go visit a couple junkyards now haha
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Old Aug 19, 2004 | 10:34 PM
  #58  
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a 609 will need splicing if you can find a plug off a dsm wiring harness in the junkyard. a 501(for sure) and the 399(which replaced the 609) are direct swaps. the 399 has not been tried to my knowledge. i can't get my hands on one

if you're too lazy to go to the junkyard, try www.car-part.com

staying NA, a static fpr will suffice. a rising rate fpr just gets richer faster and has faster response to vacuum than the stock fpr. but if you ever plan to go turbo, check to see if it is also boost sensitive.
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Old Aug 19, 2004 | 11:25 PM
  #59  
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How about fuel delivery? Assuming NA would I need injectors? Or would a 2G GSX pump do the job?
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Old Aug 20, 2004 | 05:31 AM
  #60  
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Hey, if anyone is interested (I need to verify this and the part #) I have a 98/99 Galant MAF. I got it for the connector and discovered that it was different than the Evo's MAF sensor connector..

If its the one you guys needed, and someone can tell me if the connector on the Lancer MAF is the same as the Evo(I don't care about the MAF itself, just the physical connection), I'll make an even trade for it. Preferrably someone I can meet up with (Long Island, NY) since shipping is a PITA..

IF your wondering, I got a blowthrough MAF upgrade for my Evo, and wanted to make the setup plug and play, so I've been needing a MAF sensor (broken or working) with the same connector that is on the EVO so I can extract the connector.

BUT, since you guys are experimenting, I figure I'd make this thing available to someone who needed it in exchange for one (working or not) that has the same connector as the Evo MAF...

PM Me if interested!
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