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Old 01-12-2009, 06:33 PM   #101
Scandora
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How come ive never heard about this easy to install supercharger. bringing an impreza to stock wrx hp? i didnt think it was that easy.... but i am a newbie :/
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Old 01-12-2009, 06:59 PM   #102
Battlesnake99
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you never heard about it because its not out yet. The first pre-2006 (and after 2001 or something) kits just were shipped. 06-08 are going to wait a while.
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Old 01-12-2009, 10:03 PM   #103
Scandora
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Yeah, thats what i figured I'm just assuming after my 3 year warrenty is up there will be mods for my subie i can only hope
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Old 01-12-2009, 10:11 PM   #104
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I just finished doing a lot of reading on those raptor supercharges, man i can't wait to slap one of those on my 08 2.5i sedan a few years from now
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Old 01-15-2009, 11:38 PM   #105
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Quote:
Originally Posted by Biesty View Post
After seeing this post I tried this as well and so far so good. I have a 2005 Subaru Outback 2.5i, bought the intake kit listed and installed it a few days ago. only took about 30 minutes. The 05 only has 2 hoses instead of three so I used one more vacuum cap from the set of 3 on the 3rd hole and then clamped it. I also used the hoses that came with the kit and they fit so I did not have to use 3 brass hose barbs and 8 clamps to connect the hoses together. I only had to use 5 clamps and one brass hose barb. The clamps that came with the original intake did not seem as good as the new ones so I used the ones.

$62 for the intake kit.
$2.29 for the vacuum cap
$2.99 for the hose clamps
$1.09 for the small vacuum cap hose clamp
$13.98 for 2 Silicone couplers
$2.99 for the brass hose barb
$85.34 Total for a new intake system.

I'm having trouble posting the pics (I'm new) but when I figure it out I'll put them on.

I already have a K&N air filter in there so that doesn't count. I drive from SB to Mammoth almost every weekend and so far I have been averaging 27.9mpg (5 trips) round trip driving at around 70-75. Hopefully this will add a little MPG to the drive.

The car seems to drive easier and accelerates faster than it did before. The 2.5i had a pause when you punched it where you would hear the car rev up and then it would accelerate. Now it seems much more instantaneous. There is almost no increase in noise either but I like the new sound better than the stock intake sound.

Hopefully the check engine light won't come on and this will be my new set up.....well except for smog checks ;-).

I'll keep everyone posted on what happens.
I did my first trip to mammoth on this and I was quite pleased. After over 800 miles on the new intake no check engine light came on. The mileage went from 27.9mpg to 28.8mpg. What was cool is for the first time on the way up I encountered massive head winds most of the trip that definitely effected the MPG & I still did better. I also had a passenger with me where most of the trips I didn't. I think the winds were 40-60MPH in some places. I can't wait to drive it up and back with no winds. I'm thinking it will be a 1-1.5MPG gain.

Thanks for posting this and leading the way to better performance/mpg.
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Old 01-16-2009, 12:25 AM   #106
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your getting 28mpg????? wtf? dude i get like 20 if im lucky ussually its like 17
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Old 01-16-2009, 08:26 AM   #107
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Originally Posted by watchunglava View Post
your getting 28mpg????? wtf? dude i get like 20 if im lucky ussually its like 17

wow you must be runnin every gear to redline. i like to beat up my car, but in the warm weather i get 27-28mpg, in the cold 24-25. 5sp 2008 obs. i think there is either something wrong with your car or you need to work on your driving techniques
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Old 01-17-2009, 10:49 PM   #108
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^ true that. I run my 08 2.5i pretty damn hard every day, just about 99% city driving, and I'm seein 24.9mpg avg right now. around 30,31 on the highway going about 75 80
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Old 01-24-2009, 02:36 PM   #109
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I've got some pics of this install up. works pretty good. I did paint the pipe though...
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Old 01-28-2009, 09:11 PM   #110
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Just ordered same intake for my 2008 2.5i Automatic.
Going with same hybrid setup.
Thanks for an awesome write up!

Also as far as my MPG goes I get typically 21-22 in city 23-25 highway.
25 mile trips to work each way. It be interesting how much that will improve or worsen my MPG. I stay in Sport mode all the time (not manual shift but the click to the right.) Because the standard mode is just so awful!

I hope with intake it will smooth it out a bit.

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Old 01-28-2009, 10:21 PM   #111
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Quote:
Originally Posted by watchunglava View Post
your getting 28mpg????? wtf? dude i get like 20 if im lucky ussually its like 17
what the hell? i normally get 22-24 doing city/highway and if i do a long trip thats all highway i get high 20s.
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Old 01-29-2009, 08:50 PM   #112
obs2008
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just did this install as well, painted pipe satin black so its low key. overall, power is improved throughout. more bottom end, better pull on top, throttle response is improved as well. hard to tell in the winter time cause my gas mileage is alot lower than summer, but it appears im getting approx. 1-1.5 mpg better. overall, great mod for $100. ill get some pics up soon
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Old 01-29-2009, 09:01 PM   #113
dzrt_hrd
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I don't know if you've experienced this, but I have to go in and trim just a little off the end that mates with the TB. It just barely makes contact with a metal line at the top of the engine compartment. In the mean time when it idles I can just barely hear it vibrate.
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Old 01-30-2009, 10:59 AM   #114
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Quote:
Originally Posted by watchunglava View Post
your getting 28mpg????? wtf? dude i get like 20 if im lucky ussually its like 17
Yeah somethings up with your mileage... I get average of 30 MPG I've gotten as good as 34.6 and as bad as 26.


I'm running a K&N filter and its a must to clean off the sensor every "2,500-3,000 miles"just after the Airbox to maintain decent mileage.

I also run acetone in my fuel.. makes a HUGE difference 2.5-3 oz. per tank 85-87 octane.
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Old 01-30-2009, 03:13 PM   #115
obs2008
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Quote:
Originally Posted by dzrt_hrd View Post
I don't know if you've experienced this, but I have to go in and trim just a little off the end that mates with the TB. It just barely makes contact with a metal line at the top of the engine compartment. In the mean time when it idles I can just barely hear it vibrate.
yeah i had that problem too. when i first started up the car i could hear it vibrate off it. it should be an a/c line. i just pushed the line down a lil by hand and havent had a problem since
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Old 01-30-2009, 08:47 PM   #116
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Just got mine in the mail.
Took 1 day for delivery. WOW. Super fast service.
I even used a $5.00 online coupon I found on google.
Super cheap!

No to the auto store to pick up:

2 3" silicone coupler. One for the hack, one for the airbox.
8 Hose clamps
1 x 3/8" vacuum cap for that stupid grommet
3 x 1/2" - 1/2" brass hose barbs to add some inches to the breather lines.

-----------------------------------------------
1 x Hacksaw (to cut the pipe)
1 x Knife (to cut the hose)
1 x Socket set
1 x Screwdriver set


Quote:
Originally Posted by obs2008 View Post
just did this install as well, painted pipe satin black so its low key. overall, power is improved throughout. more bottom end, better pull on top, throttle response is improved as well. hard to tell in the winter time cause my gas mileage is alot lower than summer, but it appears im getting approx. 1-1.5 mpg better. overall, great mod for $100. ill get some pics up soon
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Old 01-31-2009, 12:41 AM   #117
dzrt_hrd
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Quote:
Originally Posted by obs2008 View Post
yeah i had that problem too. when i first started up the car i could hear it vibrate off it. it should be an a/c line. i just pushed the line down a lil by hand and havent had a problem since
hmmm...well either way I finally got my new filter in the mail, so tomorrow I'm going to fix it and put the filter in - got one of the perrin ones. I'll probably push the line down a bit as well as trim just a tad off the pipe. It'll help it match up closer to the airbox anyways...
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Old 01-31-2009, 02:59 PM   #118
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Quote:
Originally Posted by EEExotic View Post
Yeah somethings up with your mileage... I get average of 30 MPG I've gotten as good as 34.6 and as bad as 26.


I'm running a K&N filter and its a must to clean off the sensor every "2,500-3,000 miles"just after the Airbox to maintain decent mileage.

I also run acetone in my fuel.. makes a HUGE difference 2.5-3 oz. per tank 85-87 octane.
I though it was bad to put acetone in the car because it melts away the hoses or something like that.
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Old 02-01-2009, 02:43 AM   #119
gshabanov
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I wonder if we really have to cut the pipe ?
It seems to me that it can reach just fine with a little force of cause.
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Old 02-01-2009, 02:49 AM   #120
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That sensor with a hose from the box by the TB. The hose seems cut. Does it not?

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Old 02-01-2009, 01:45 PM   #121
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Quote:
Originally Posted by gshabanov View Post
That sensor with a hose from the box by the TB. The hose seems cut. Does it not?

If you are referring to what i think you are (the white sensor with the wire harness plugged into it and the black tube facing the firewall) that black tube where it went to the stock box before the TB was just a mounting point. it didnt actually get any air from that box or anything. Im still not entirely sure what that sensor is for. the tube on the other side runs into the crankcase i think. PCV press sensor or something, maybe?

I inspected mine when i did my sri/hybrid mod and if you look into that black tube on the sensor, it goes nowhere. no holes into the sensor or anything. look on the stock box before the TB and the hole it clips to should be just a sealed hole. not a hole actuially into the inside of the stock box.
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Old 02-01-2009, 02:53 PM   #122
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RaceFaceXC your absolutely corect.
I noticed it finally after I took it apart.
Finished install last night. Also I did not cut the pipe in 2 pieces. I just kind of aligned it and clamped. Doen't seem to be any air leaks.
Reset the battery. Couldnt start the car for 3 to 4 seconds was cranking next morning then fired up and all is well. Perhaps was adjusting.

Took for the drive in the morning sounds a bit louder then stock but not too bad. Mine is an Automatic. I used to have a hesitation on shifts and small vibration through out the dashboard like the RPM is too low when I would drive with a light foot. Now seems a lot smoother. When Auto in Sport Mode I actually noticed that it's alot smoother also.

But I have to say that there is some low end loss in power so far. Perhaps I will wait till car adjusts to new air flow.



Quote:
Originally Posted by RaceFaceXC View Post
If you are referring to what i think you are (the white sensor with the wire harness plugged into it and the black tube facing the firewall) that black tube where it went to the stock box before the TB was just a mounting point. it didnt actually get any air from that box or anything. Im still not entirely sure what that sensor is for. the tube on the other side runs into the crankcase i think. PCV press sensor or something, maybe?

I inspected mine when i did my sri/hybrid mod and if you look into that black tube on the sensor, it goes nowhere. no holes into the sensor or anything. look on the stock box before the TB and the hole it clips to should be just a sealed hole. not a hole actuially into the inside of the stock box.
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Old 02-01-2009, 04:19 PM   #123
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The car cranking for a few seconds after an ECU reset it normal. I'm not sure why it does that exactly, but it does it every time for me and others have experienced the same thing. as far as the low end power loss, id suggest doing some logs and see if you can see what it's doing. Also, a MAFv rescale is necessary to calibrate your ECU to your new intake diameter and flow characteristics. Without a MAFv rescale you may be running rich or lean or both at various engine loads (MAFv readings). That would certainly be a likely cause for a power loss at any RPM/load. In addition to a slight power gain, a MAFv rescale may help your mileage a bit, to boot.
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Old 02-01-2009, 04:28 PM   #124
gshabanov
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I was previous comments in this thread about MAFv rescale.
Sounds like it be a good idea. But not worth using anything expensive.
Does any one have links where I can get the 1.3 cable cheap ?

Perhaps I should wait for Cobb access port in February.
But that probably be pricey.



Quote:
Originally Posted by RaceFaceXC View Post
The car cranking for a few seconds after an ECU reset it normal. I'm not sure why it does that exactly, but it does it every time for me and others have experienced the same thing. as far as the low end power loss, id suggest doing some logs and see if you can see what it's doing. Also, a MAFv rescale is necessary to calibrate your ECU to your new intake diameter and flow characteristics. Without a MAFv rescale you may be running rich or lean or both at various engine loads (MAFv readings). That would certainly be a likely cause for a power loss at any RPM/load. In addition to a slight power gain, a MAFv rescale may help your mileage a bit, to boot.
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Old 02-01-2009, 08:00 PM   #125
bcware
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Quote:
Originally Posted by dzrt_hrd View Post
I don't know if you've experienced this, but I have to go in and trim just a little off the end that mates with the TB. It just barely makes contact with a metal line at the top of the engine compartment. In the mean time when it idles I can just barely hear it vibrate.
I had the same problem, especially on initial startup. After running the intake for a while I took the pipe off and the contact had worn through the paint. I had some 3m double sided tape in the garage so I covered the worn area with that and left the opposite side of the tape on. This solved the problem because the 3m double sided tape is sort of thick, foamy, and padded. An alternative would be to use a strip of door/window insulation foam. Since the tape isn't visible when the pipe is installed the looks aren't affected.

Quote:
Originally Posted by RaceFaceXC View Post
If you are referring to what i think you are (the white sensor with the wire harness plugged into it and the black tube facing the firewall) that black tube where it went to the stock box before the TB was just a mounting point. it didnt actually get any air from that box or anything. Im still not entirely sure what that sensor is for. the tube on the other side runs into the crankcase i think. PCV press sensor or something, maybe?



I inspected mine when i did my sri/hybrid mod and if you look into that black tube on the sensor, it goes nowhere. no holes into the sensor or anything. look on the stock box before the TB and the hole it clips to should be just a sealed hole. not a hole actuially into the inside of the stock box.

When I did my hybrid install I examined this sensor and the torque box closely and it does feed into the torque box. The black bracket is hollow like a straw and connects to a black hose which travels to the bottom of the torque box. From the bottom of the torque box there appears to be a channel that ends where the torque box connects to the throttle body. If you look you'll see a small hole in the white part of the plastic in the interior of the torque box. From what I can see this appears to be channeling air JUST before it enters the throttle body. This may be a change from the 07, however. I will take some pictures when I get home tonight and show you what I mean.

Last edited by bcware; 02-01-2009 at 08:08 PM.
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