John M Posted November 9, 2008 Share Posted November 9, 2008 Still looking at various intakes with a little more diameter than stock so I won't run out of resolution for my FP Green. Imagine my shock when I was browsing AutoZone and saw that Spectre sells exactly what I need for under $15! This site shows what I'm talking about: http://www.thepartsbin.com/sitemap/subaru~mass_air_flow_sensor_adaptor~parts.html Chrome plated steel - add a silicone coupler and a 3in cone filter and I'm done for maybe $50 instead of the $150-250+ the brand names want for theirs. By my calculations, its 2.875 inch internal diameter equates to roughly 73 mm. That should give me the flow I need. Can anyone point out any glaring issues I've overlooked? Link to comment Share on other sites More sharing options...
itsme Posted November 9, 2008 Share Posted November 9, 2008 Yes. It's chrome!! J/K try it out and let us know how it datalogs. Racer X FMIC for '05-'09 LGTs, '08+ WRX and '10+ LGT,'14+ FXT, and '15+ WRX TMIC Racerxengineering.com Link to comment Share on other sites More sharing options...
GULLABLE0NE Posted November 9, 2008 Share Posted November 9, 2008 doesnt the maf sensor have to be placed in a specific spot so the sensor is not throwing codes? Link to comment Share on other sites More sharing options...
itsme Posted November 9, 2008 Share Posted November 9, 2008 It is more about how it's placed. As long as the air shots straight past the MAF and doesn't have a bend too close in front of it to cause turbulence. Just scale the MAF and you should be fine. Racer X FMIC for '05-'09 LGTs, '08+ WRX and '10+ LGT,'14+ FXT, and '15+ WRX TMIC Racerxengineering.com Link to comment Share on other sites More sharing options...
NSFW Posted November 10, 2008 Share Posted November 10, 2008 Why short ram? Add a 45 degree bend and you've got a CAI. And I'm pretty sure you can make your own heat shield that will be at least as good as AEM's, and won't rust like theirs. I have a couple ideas for that, but it might be a while before I get off my ass and build something. Link to comment Share on other sites More sharing options...
whitetiger Posted November 10, 2008 Share Posted November 10, 2008 with propper intercooling, a cai makes no real difference on a turbo car. the heat off compression will negate any benefits a CAI has over a WAI or short ram. A good intercooler core, and WI will be much more beneficial. I would worry about getting a cai. Link to comment Share on other sites More sharing options...
DocHolladay23 Posted November 10, 2008 Share Posted November 10, 2008 Imagine my shock when I was browsing AutoZone and saw that Spectre sells exactly what I need for under $15! I've got one of those sitting in my garage not being used... [sIGPIC][/sIGPIC] You want stickers? Hit me up here!!! You want a shirt? Hit me up here!!! Link to comment Share on other sites More sharing options...
John M Posted November 10, 2008 Author Share Posted November 10, 2008 It is more about how it's placed. As long as the air shots straight past the MAF and doesn't have a bend too close in front of it to cause turbulence. Just scale the MAF and you should be fine. It's the scaling part that's going to keep me busy. Until this point I've never tuned for so many mods at once. Theoretically I should be able to get the 850 injectors working with only a few changes but they'll require fine tuning of course. Throw in the all-new MAF diameter and I know my hands will be full. Let me stress that this is not a good option for anyone not shooting for this much horsepower. Until you out-flow the stock MAF there's no reason to go with a bigger tube. Unfortunately it doesn't look like Spectre sells anything in the stock size but I think I'll give this a try for my situation. Link to comment Share on other sites More sharing options...
NSFW Posted November 10, 2008 Share Posted November 10, 2008 A while back, someone found MAF sensor mounting things (for lack of a better word) on eBay for various sizes of tubing. It was basically just a machined aluminum square with a curved underside that you'd sandwich between the MAF sensor and the tube to give a proper fit. I don't see them on ebay now but they might be available elsewhere. Link to comment Share on other sites More sharing options...
NSFW Posted November 11, 2008 Share Posted November 11, 2008 Someone posted this at RomRaider, it's the part I mentioned above: http://www.kstech.biz/servlet/the-9/blow-thru-through-MAF/Detail Link to comment Share on other sites More sharing options...
NSFW Posted November 11, 2008 Share Posted November 11, 2008 Before you buy the $20 tube in the original post, read the 4th post in this RomRaider thread: http://www.romraider.com/forum/post39361.html#p39361 Key words: it's plastic. Link to comment Share on other sites More sharing options...
John M Posted November 13, 2008 Author Share Posted November 13, 2008 Our stocker is plastic too so I could live with that. You don't have to crank down on intake piping so there's no danger of splitting it with the force of the screwdriver. I'll report once the car is driving with the new setup. It'll be a few more weeks since I only get to do work on the weekends. Link to comment Share on other sites More sharing options...
NSFW Posted November 13, 2008 Share Posted November 13, 2008 Just wanted to be sure you know it's not steel as you wrote in your first post. Link to comment Share on other sites More sharing options...
oneslo5.0 Posted November 13, 2008 Share Posted November 13, 2008 new member here...does KnN make a drop in filter for the GT??? Link to comment Share on other sites More sharing options...
autotech Posted November 13, 2008 Share Posted November 13, 2008 i just got an AVO drop in and a smooth air bellow and will keep everything else stock. No need to go further then that in my opinion. Link to comment Share on other sites More sharing options...
JDM-STI Posted November 14, 2008 Share Posted November 14, 2008 i just got an AVO drop in and a smooth air bellow and will keep everything else stock. No need to go further then that in my opinion. When you are doing a turbo upgrade and FMIC as John is, it is very necessary to go further than a drop in filter. 05 STI CGM~520whp/463wtq...more to come! 08 STI Aspen White/Gold BBS~305whp/365wtq:D Both tuned by Scott Siegel! Link to comment Share on other sites More sharing options...
SuperCleanLGT Posted November 14, 2008 Share Posted November 14, 2008 I used something similar to that on my 05 Tacoma Xrunner. It was cheap and performed the same. I preferred platic over metal for the N/A engine for better insulation. Link to comment Share on other sites More sharing options...
CuRiOuSfIsH Posted November 14, 2008 Share Posted November 14, 2008 new member here...does KnN make a drop in filter for the GT??? yes http://www.knfilters.com/search/product.aspx?Prod=33-2304 Link to comment Share on other sites More sharing options...
Infamous1 Posted November 17, 2008 Share Posted November 17, 2008 with propper intercooling, a cai makes no real difference on a turbo car. the heat off compression will negate any benefits a CAI has over a WAI or short ram. A good intercooler core, and WI will be much more beneficial. I would worry about getting a cai. A CAI will make a difference. Regardless of intercooler efficentcy, the cooler the air is even before compression the cooler the output will be pre intercooler. These effects are even more apparent at each extreme cold/hot, but especially cold. Not to mention having the short ram drawing in high under hood temps while at idle that take additional time to come back down. Link to comment Share on other sites More sharing options...
NSFW Posted November 18, 2008 Share Posted November 18, 2008 Random observation: my AEM was pulling 100 degree air from my fender the other day in traffic, with about 60 degrees ambient temperature. Link to comment Share on other sites More sharing options...
Infamous1 Posted November 18, 2008 Share Posted November 18, 2008 Random observation: my AEM was pulling 100 degree air from my fender the other day in traffic, with about 60 degrees ambient temperature. Yes and a short ram would of been even higher. I have a Typhoon modified to extend down in the fender and have seen IAT as high as 170+degree while waiting in staging lanes. I have logged it in its original position vs in the fender, the biggest difference is the time it takes to cool after sitting at idle. Link to comment Share on other sites More sharing options...
lucas569 Posted November 18, 2008 Share Posted November 18, 2008 last week i had a meeting and traffic was stop and go for almost 40 minutes, i could see the heat mirage coming out of the intercooler hole... i thought this cant be good at all. Link to comment Share on other sites More sharing options...
CTATV Posted November 25, 2008 Share Posted November 25, 2008 i just got an AVO drop in and a smooth air bellow and will keep everything else stock. No need to go further then that in my opinion. where can u get a smooth air bellow at? Link to comment Share on other sites More sharing options...
snow05gtRI Posted November 26, 2008 Share Posted November 26, 2008 i *think* the bellow he's talking about is the pipe that goes from the air box to the turbo inlet, the stock one is ribbed for her pleasure. i think zerosports makes one, possibly perrin as well. Link to comment Share on other sites More sharing options...
subieleg Posted November 26, 2008 Share Posted November 26, 2008 Interesting... Link to comment Share on other sites More sharing options...
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