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Old 08-08-2005, 11:42 AM   #51
2fas4u
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Won't argue that with you. Been building engines and racing my whole life. Spent many many hours around dyno's..But there is definate proof if you baseline a car on a dyno and proceed with later runs on that same dyno, the data is accurate. The 5-10 hp makes me laugh because it is so neglible that it is really just a sales gimmick. Now if you compile mods that each contribute 5-10 hp, thats a different story.....
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Old 08-08-2005, 12:50 PM   #52
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That was my point. Trying to measure a difference of 5 to 10 hp is silly. I do agree that if a compilation of mods each add 5 to 10 hp then you would definitely see a difference.
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Old 09-16-2005, 06:32 AM   #53
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Im planning on going with a vf-34/turboxs tmic/600cc injectors, 255walbro ..fp, full catless exhaust keeping my stock headers. Will an intake help with a tune? I have a utec for EM atm. Also what brands would be best for this setup if it will help? Right now I have a K&N drop in filter
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Old 09-16-2005, 10:29 AM   #54
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To me it would make sense to keep the stock ram air part of the intake and chop off the snorkel. That would make much more sense to me. Why isnt anybody doing that? Are there problems with water when doing it that way? to me this is the most logical way to go on the intake in the WRX
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Old 09-16-2005, 03:08 PM   #55
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Quote:
To me it would make sense to keep the stock ram air part of the intake and chop off the snorkel. That would make much more sense to me. Why isnt anybody doing that? Are there problems with water when doing it that way? to me this is the most logical way to go on the intake in the WRX
uhh....I a lot of people on here do that including me. Maybe around 99.9999% . Ok, maybe not quite as many, but many do and are very happy.

I would like to see a dyno w/ and wideband 02 with a K&N typhoon intake. Does anyone have one cause someone just gave me one but i'm not going to put it on until i see exactly what i want to see.
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Old 10-19-2005, 08:14 PM   #56
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Quote:
Originally Posted by wrxskier18
I would like to see a dyno w/ and wideband 02 with a K&N typhoon intake. Does anyone have one cause someone just gave me one but i'm not going to put it on until i see exactly what i want to see.
I have a 04 STi and have a K&N Typhoon in it since April 05 now. No problems what so ever. I made sure to reset the computer when installing.

I checked K&N's site and they indicate this product cannot hurt the MAF:
look at knfilters FAQ page:
7. Will a K&N filter cause my vehicle’s mass air sensor to fail?

also:
10. Will I need to make adjustments to my vehicle after I install a K&N filter or intake kit? "On fuel injected vehicles the original equipment manufacturer (OEM) computer and emissions control system will adjust for the increase in air. The OEM computer will adjust immediately if it is reset."

Also, Unabomber reports starting this post that K&N Typhoon claims in writing not to cause problems with A/F ratio. Right there are his links to the testing.
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Old 03-24-2006, 07:32 AM   #57
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i have a question about removing the intake silencer from the 02 wrx.

instead of fabricating another piece to get cold air to the air box, could you just cut the bottom piece of the snorkus? and have like a Y-pipe? right below the U, get rid of the tank, and leave it opened. getting air from the front, and air from the fender well, and the box sucking it all up? or just cut the botton right below the U and taping it up?



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Old 03-24-2006, 07:37 AM   #58
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Quote:
Originally Posted by penusai
i have a question about removing the intake silencer from the 02 wrx.

instead of fabricating another piece to get cold air to the air box, could you just cut the bottom piece of the snorkus? and have like a Y-pipe? right below the U, get rid of the tank, and leave it opened. getting air from the front, and air from the fender well, and the box sucking it all up? or just cut the botton right below the U and taping it up?

http://home.earthlink.net/~xadtheman...ender1EDIT.jpg
Yes, you can. I did this at first, however I cut the bottom out of the silencer and epoxied that to the Y then drilled a drainage hole. Really didn't improve the sound much though. Since then I pulled the whole thing out and just pull air from the fender well.
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Old 03-29-2006, 08:18 PM   #59
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Does installing a "maf" hose effect the air/fuel ratio? It is bigger than stock "maf." Thanks
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Old 03-30-2006, 06:04 AM   #60
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Nice question. Installing a MAF hose CAN mess with the AFR, wether it's the normal or especially big MAF. I wouldn't recommed that anyone install one or one of the "long" turbo inlets like the BPM/AVO ones without tuning.
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Old 03-30-2006, 11:39 PM   #61
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Thanks, should've asked before I bought one. I'm sure it will come in handy down the line.
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Old 03-30-2006, 11:55 PM   #62
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2fas4u thanks mate your comment about dyno's not lying made me laugh! any one knows a dyno operator can make 2 runs with the same car on the same day in exactly the same conditions show two different figures,
ill be honest most of the stuff done before the turbo wont add a lot of power, what it will do however is speed up your spool up and sharpen throttle responce
incidently, the rcm car uses a large engine bay mounted k'n'n with no shielding and kicks out over 700hp!


una could you please please please do an article on hybrid turbos and how different side AR effect spool up and top end as its realy baking my noodle at the mo
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Old 03-31-2006, 12:04 AM   #63
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Does the snorkus mod do anything for performance or just remove the silencer for sound?


I'm not interested in hacking into my stock box for sound, but if performance is to be gained than I'd be all for it.


Also, what are your thoughts on the drop in filters? I've read the studies about the particulates in the oil, so do you recommend just sticking with an oem air intake filter?
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Old 04-03-2006, 11:53 PM   #64
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bueller.....bueller...
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Old 04-04-2006, 12:38 AM   #65
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cobb does make a short ram intake now... so im guessing that its good stuff




the description says that it has no turbulence and works well with the stock a/f ratio, im almost positive that they make a map with it for accessport as well

Does anybody have the cobb short ram, or know anything about it???
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Old 04-04-2006, 06:31 AM   #66
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Old 04-04-2006, 09:41 AM   #67
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Quote:
Originally Posted by totalburnout
Does the snorkus mod do anything for performance or just remove the silencer for sound?


I'm not interested in hacking into my stock box for sound, but if performance is to be gained than I'd be all for it.


Also, what are your thoughts on the drop in filters? I've read the studies about the particulates in the oil, so do you recommend just sticking with an oem air intake filter?
Faster spool up.Remove snorkus.In stall Summit Racing 3" velocity stack.Reset ECU.Call it a day.As for the drop in filters for a pretty much stock car it won't do much because the filter isn't that much of a restriction YET.Now you start getting up to the 250-275 whp area a drop in is going to perform over the stock paper.There is no doubt (look at all the stupid tests floating on the net) a K&N(or similar) will out flow a paper filter.But there is alway a trade off.I personally like the AFE replacements.They filtewr down to 2 microns and flow almost as well as the K&N.
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Old 04-04-2006, 10:13 AM   #68
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Quote:
Originally Posted by dumdum
Faster spool up.Remove snorkus.In stall Summit Racing 3" velocity stack.Reset ECU.Call it a day.As for the drop in filters for a pretty much stock car it won't do much because the filter isn't that much of a restriction YET.Now you start getting up to the 250-275 whp area a drop in is going to perform over the stock paper.There is no doubt (look at all the stupid tests floating on the net) a K&N(or similar) will out flow a paper filter.But there is alway a trade off.I personally like the AFE replacements.They filtewr down to 2 microns and flow almost as well as the K&N.
Got a link on the AFE and the summit racing velocity stack?

I'm Cobb Stage 2 right now, tbe, uppipe - soon to be pulleys and possibly header.
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Old 04-04-2006, 03:20 PM   #69
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djviper... wish I could do an article on article on hybrid turbos, etc. but I have the dumb. Maybe way on down the road, but I aint that smart yet.

The snokus mod is mainly for sound. Will it give a HP or two? It might, but no one really knows for sure and if it did, most people who do this also swap to a K&N filter so that might be where the gains come from. For my money though....I went from OEM paper to Perrin Foam. Once I got my learn on....I switched back to the OEM paper filter. In the grand scheme of things it probably won't matter, but PERSONALLY, I prefer the better filtration to the miniscule HP gains that other filter may/may not give you. The HP difference in filters isnt documented very well in Subarus, but the dirt collection IS. You can find part number info on Scoobymods.com on their snorkus delete instructions. Sorry for not answering as I don't subscribe to these FAQs, I just occasionally see them when they get bumped to the first page.
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Old 04-04-2006, 03:57 PM   #70
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Quote:
Originally Posted by Unabomber
djviper... wish I could do an article on article on hybrid turbos, etc. but I have the dumb. Maybe way on down the road, but I aint that smart yet.

The snokus mod is mainly for sound. Will it give a HP or two? It might, but no one really knows for sure and if it did, most people who do this also swap to a K&N filter so that might be where the gains come from. For my money though....I went from OEM paper to Perrin Foam. Once I got my learn on....I switched back to the OEM paper filter. In the grand scheme of things it probably won't matter, but PERSONALLY, I prefer the better filtration to the miniscule HP gains that other filter may/may not give you. The HP difference in filters isnt documented very well in Subarus, but the dirt collection IS. You can find part number info on Scoobymods.com on their snorkus delete instructions. Sorry for not answering as I don't subscribe to these FAQs, I just occasionally see them when they get bumped to the first page.
Any thoughts on the particular filter that the other guy mentioned?

Thanks for the response.
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Old 04-05-2006, 08:19 AM   #71
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Quote:
Originally Posted by totalburnout
Got a link on the AFE and the summit racing velocity stack?

I'm Cobb Stage 2 right now, tbe, uppipe - soon to be pulleys and possibly header.
http://afefilters.com/oereplacement.htm

http://store.summitracing.com/egnsea...C%2D19002&x=30
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Old 04-05-2006, 08:22 AM   #72
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Quote:
Originally Posted by Unabomber
djviper... wish I could do an article on article on hybrid turbos, etc. but I have the dumb. Maybe way on down the road, but I aint that smart yet.

The snokus mod is mainly for sound. Will it give a HP or two? It might, but no one really knows for sure and if it did, most people who do this also swap to a K&N filter so that might be where the gains come from. For my money though....I went from OEM paper to Perrin Foam. Once I got my learn on....I switched back to the OEM paper filter. In the grand scheme of things it probably won't matter, but PERSONALLY, I prefer the better filtration to the miniscule HP gains that other filter may/may not give you. The HP difference in filters isnt documented very well in Subarus, but the dirt collection IS. You can find part number info on Scoobymods.com on their snorkus delete instructions. Sorry for not answering as I don't subscribe to these FAQs, I just occasionally see them when they get bumped to the first page.
Pretty sure there is a thread in the 2.5 turbo section documenting a pressure drop when removing the snorkus.Ride5000 documented his MAF voltage using the velocity stack mod as well
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Old 04-05-2006, 09:11 AM   #73
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That's why I posted mainly for sound. I haven't heard any tuners recommend the snorkle mod prior to tuning so while it may produce SOME gains, it aint enough for me to blanket recommend that everybody do it. It's a no harm mod though and probably good for people who want to maximize what they have without getting a full intake.

AFE filters = crap just like K&N as K&N uses cotton guaze as a filtration media. Will it flow more? Yes. Will it let more dirt get into your car? Yes. Did they do ISO 5011 testing to prove their claims? No. Did the gurus on bobistheoilguy.com test "cotton gauze" filters and find out they suck just like the other filters? Yes.
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Old 04-05-2006, 01:53 PM   #74
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Quote:
Originally Posted by Unabomber
That's why I posted mainly for sound. I haven't heard any tuners recommend the snorkle mod prior to tuning so while it may produce SOME gains, it aint enough for me to blanket recommend that everybody do it. It's a no harm mod though and probably good for people who want to maximize what they have without getting a full intake.

AFE filters = crap just like K&N as K&N uses cotton guaze as a filtration media. Will it flow more? Yes. Will it let more dirt get into your car? Yes. Did they do ISO 5011 testing to prove their claims? No. Did the gurus on bobistheoilguy.com test "cotton gauze" filters and find out they suck just like the other filters? Yes.
Thats like saying all paper filters are the same,which they are not.AFE uses 3x the filtering media as K&N which is why their filters don't flow quite as much.Both the AFE and K&N ARE IN the ISO 5011 test you have a link too Take alook at that test again and tell me the AFE and K&N are the same.The AFE was within .5% filtering efficiancy of the AC Delco. But in all fairness to do that test correct for our Subarus it would require testing of all those brands using the Subaru airfilters part #'s.

Last edited by quazimoto; 04-05-2006 at 02:12 PM.
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Old 04-05-2006, 04:09 PM   #75
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Oh and also if you you look at the ISO 5011 test alittle closer you will see the AFE cotton gauze filter pretty much beat out the WIX and Purolator paper filters.Doesn't Purolator make the OEM air filter for Subaru?
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