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09-11-2003, 08:10 PM | #26 |
Scooby Specialist
Member#: 19236
Join Date: May 2002
Vehicle:Axis GT35/40R STi Not back yet |
I did a little dyno research with a drop in/silencer mod vs a injen "type" CAI.
While the injen "type" CAI made 3-4 more HP than the drop in with silencer mod on the STi, this was mainly due to leaning the car out a little, plus the additional volume of air passing by the MAF made it work much harder. Due to the harsh effect on the A/F the MAF had, I went back to the drop in w/silencer mod until I can tune for the CAI with a slightly larger piping. If the APS is truly the same size as the stock MAF hosing diameter, then it would make sense that is a viable option. Just have to weigh the cost of a drop in vs the APS CAI and is it worth 3-4 HP? Just my 2c.
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09-11-2003, 08:32 PM | #27 | |
Scooby Specialist
Member#: 15059
Join Date: Feb 2002
Chapter/Region:
MAIC
Location: Latrobe, PA
Vehicle:2004 WRX STi 1991 TSi |
Quote:
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09-11-2003, 09:43 PM | #28 | |
Scooby Guru
Member#: 4764
Join Date: Mar 2001
Chapter/Region:
TXIC
Location: Houston
Vehicle:2004 STi sold :( forizzle |
Quote:
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09-11-2003, 09:44 PM | #29 | |
Scooby Guru
Member#: 4764
Join Date: Mar 2001
Chapter/Region:
TXIC
Location: Houston
Vehicle:2004 STi sold :( forizzle |
Quote:
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09-11-2003, 10:46 PM | #30 |
Scooby Specialist
Member#: 37581
Join Date: May 2003
Location: Correct Fitment Crew #38
Vehicle:2004 SZ55'd STi 375whp on 91/404whp on 95 |
To all the guys with the 65mm APS CAI on their STi's...where did you guys order them from?
-STiLL |
09-12-2003, 12:14 AM | #31 | |
Scooby Specialist
Member#: 15059
Join Date: Feb 2002
Chapter/Region:
MAIC
Location: Latrobe, PA
Vehicle:2004 WRX STi 1991 TSi |
Quote:
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09-12-2003, 12:18 AM | #32 |
Scooby Guru
Member#: 18928
Join Date: May 2002
Chapter/Region:
South East
Location: Butner,Stem NC
Vehicle:2002 jdm wrx v7/v8 inter/w Spec C roof vent |
I wouldnt mess with the intake..I know a friend putting down 353 hp with the stock intake on his wrx.
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09-12-2003, 03:03 AM | #33 |
Scooby Newbie
Member#: 17493
Join Date: Apr 2002
Location: San Diego
Vehicle:2004 STi Boring Blue |
HKS and Zerosports
I have the HKS Super Mega Flow intake with the Zerosports intake pipe. I have also done the intake silencer mod(cut off the lower portion of the silencer and sealed it with a piece of plastic to make it a u bend, ghetto but does the job). As previous people have said it sounds awsome. HKS seems the most common intake in the UK so I thought I'd give it a try. Absolutely no CEL's.
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09-12-2003, 07:58 AM | #34 |
Vendor
Member#: 3600
Join Date: Jan 2001
Location: Detroit, Michigan, USA
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Blitz SUS. Made 10 whp on a mostly stock WRX over a drop in filter. Made about 15 whp on my STi with just downpipe. Simply amazing. No other intake I've tried has done that.
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09-12-2003, 09:20 AM | #35 | |
Scooby Newbie
Member#: 37205
Join Date: May 2003
Chapter/Region:
RMIC
Location: Colorado
Vehicle:2004 STI WRB |
Quote:
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09-12-2003, 10:28 AM | #36 |
Scooby Newbie
Member#: 39224
Join Date: Jul 2003
Location: Macomb Twp,MI
Vehicle:04 STI Black |
I have the Apexi Gt-spec exhaust and he realitively unknown Apexi Power Intake with the air intake heatshield kit. No cels or apparent effect on gas mileage. It definitely sounds better and it definitely pulls harder. No proof though as I have not dyno'd the car nor have I installed my gauges yet.
Soon.... Apexi gauges and a hopefully a Godspeed downpipe when they get caught up..... George |
09-12-2003, 01:11 PM | #37 |
Scooby Specialist
Member#: 19467
Join Date: May 2002
Chapter/Region:
SCIC
Location: Chatsworth, CA.
Vehicle:04 WRX STi WR Blue - original owner |
any APS authorized dealer will carry the new 65mm intake.
see www.aps-wrx.com for list but if you must have a contact now: www.fi-systems.com (jason) phone in website. (texas) www.isrperformance.com (pam) phone in website. (So. Calif.) |
09-12-2003, 01:17 PM | #38 | |
Scooby Specialist
Member#: 37581
Join Date: May 2003
Location: Correct Fitment Crew #38
Vehicle:2004 SZ55'd STi 375whp on 91/404whp on 95 |
Quote:
Thanks again, -STiLL |
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09-12-2003, 01:20 PM | #39 | |
Scooby Specialist
Member#: 19467
Join Date: May 2002
Chapter/Region:
SCIC
Location: Chatsworth, CA.
Vehicle:04 WRX STi WR Blue - original owner |
Quote:
Upgrade intake and turbo back. (including headers) Upgraded turbo (maybe APS SR-50, or PE1820, or Shiv's new turbo) Upgraded injectors. STi lighweight 6MT Flywheel. I'm pretty darn sure that the High Flow intake will oversee some HP advantage over the stock paper-filter intake for this kind of mods. Also, regarless of tuning or not. Any High Flow intake will improve responsiveness of the car specially in the low end. So that by itself is well worth it. Once again, this applies when the MAF sensor does not get affected. |
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09-12-2003, 06:04 PM | #40 | |
Scooby Specialist
Member#: 42440
Join Date: Aug 2003
Location: Pittsburgh, PA
Vehicle:04 Impreza WRX STi Platinum Silver |
Quote:
Feel free to correct anyone if I am way off base : ) -st |
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09-12-2003, 06:06 PM | #41 | |
Scooby Specialist
Member#: 42440
Join Date: Aug 2003
Location: Pittsburgh, PA
Vehicle:04 Impreza WRX STi Platinum Silver |
Quote:
I just read in some crappy mag (can't remember which) that they removed the filter and threw it on the dyno and lost 8 HP. -st |
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09-12-2003, 06:11 PM | #42 | |
Scooby Specialist
Member#: 42440
Join Date: Aug 2003
Location: Pittsburgh, PA
Vehicle:04 Impreza WRX STi Platinum Silver |
Quote:
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09-13-2003, 09:58 AM | #43 | |
Visiting NASIOC Timeout
Member#: 40648
Join Date: Jul 2003
Location: Ontario, Canada
Vehicle:2004 STi Blue, of course |
Re: HKS and Zerosports
Quote:
Ah yes, then you are also basically using no air filter. You want to check on filtering tests, man. I ran this filter on both my previous cars and you should SEE how black the engine oil gets at changes. A portion of all that extra crap that gets by the filter ends up in your oil. After seeing my oil sometimes I'd wonder how the car still ran... -Sporty |
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09-13-2003, 10:59 AM | #44 | |
Scooby Specialist
Member#: 19236
Join Date: May 2002
Vehicle:Axis GT35/40R STi Not back yet |
Quote:
This condition can be corrected with ECU programing. To the point above, I know of a 02 WRX that is making 396 WHP on the stock box with a drop in. So if the stock box can support almost 400 WHP then I think it should work for most applications. |
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09-13-2003, 11:46 AM | #45 | |
Scooby Specialist
Member#: 42440
Join Date: Aug 2003
Location: Pittsburgh, PA
Vehicle:04 Impreza WRX STi Platinum Silver |
Quote:
Thanks again, -st |
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09-13-2003, 02:56 PM | #46 | |
Scooby Specialist
Member#: 19236
Join Date: May 2002
Vehicle:Axis GT35/40R STi Not back yet |
Quote:
Actually both. Its amazing even what a milimeter or two will do. |
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09-13-2003, 04:19 PM | #47 | |
Scooby Specialist
Member#: 42440
Join Date: Aug 2003
Location: Pittsburgh, PA
Vehicle:04 Impreza WRX STi Platinum Silver |
Quote:
-st |
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09-13-2003, 05:04 PM | #48 |
Scooby Specialist
Member#: 13540
Join Date: Dec 2001
Location: Dallas
Vehicle:2006 MKV GTI Black |
One thing you guys seemed to not have tried, is cutting the front of the air box in the fender off (that butt ugly box at the bottom of the plastic intake hoses). This in effect sort of makes it not only a CAI, but a ram intake as well. Worked wonders on my WRX, and was way better than the MRT POD filter I was using.
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09-13-2003, 05:04 PM | #49 | |
Scooby Newbie
Member#: 39724
Join Date: Jul 2003
Location: East Coast
Vehicle:04 WRX STI Silver |
Re: Re: HKS and Zerosports
Quote:
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