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Old 07-06-2000, 01:51 AM   #1
Saw Jai
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Member#: 716
Join Date: Jan 2000
Location: Cupertino, CA USA
Vehicle:
MY00 Impreza 2.5RS
Blue Ridge Pearl

Question Question again for ravent and bruce

I was wondering what you guys did with the three hoses that are attached to the stock intake box...

route them back into the intake through a spot between filter and TB?

just plug them up?

put filters on them and tie them somewhere?

or just let them be?
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Old 07-06-2000, 09:41 AM   #2
ravent
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Location: fremont,ca,usa
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00/+ RS/OBS
white

Cool

Currently route them back in, but working on a catch tank and a filtered vent. Are you trying to copy my design...good
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Old 07-06-2000, 11:00 PM   #3
Saw Jai
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Join Date: Jan 2000
Location: Cupertino, CA USA
Vehicle:
MY00 Impreza 2.5RS
Blue Ridge Pearl

Exclamation

Holy Crap!!! The freaking thing is LOUD!

For a test, I just mounted the filter directly on the TB and left the other hoses venting to the atmosphere...now the car is so loud I can hardly hear myself think!

anything more than half throttle and the car is rediculously loud...

are your intake like that too? if not what am i doing wrong?

I don't want to go through with making the box and spots for the hoses if the car is going to stay this rediculously loud...

[This message has been edited by Saw Jai (edited July 07, 2000).]
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Old 07-06-2000, 11:07 PM   #4
ravent
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Location: fremont,ca,usa
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00/+ RS/OBS
white

Cool

The cold air box will reduce intake temp by 40 degrees (tested) and noise by "x" db (not tested). You can also use some dynamat...did it help your throttle response
at all...butt dyno???
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Old 07-07-2000, 03:21 PM   #5
Saw Jai
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Location: Cupertino, CA USA
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MY00 Impreza 2.5RS
Blue Ridge Pearl

Post

Where would I put the dynamat to lower the noise level? On the flat part at the top of the filter?

After a day of driving, I put my old intake back in. Butt dyno says my car is slower, but thats due to less throttle. Its way too loud for me to do anything more than half throttle. Oh...the "mom carpooling with me everyday" factor also came into play...

I'm not abandoning this intake idea yet, just taking it out until I can make some changes...

if either of you are free anytime or are having a mini install fest or anything...let me know so I can come check out your intakes...

Thanks for all the help,
Paul
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Old 07-08-2000, 02:30 PM   #6
ravent
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00/+ RS/OBS
white

Post

malik1
Make yourself a coldair box around the throttlebody to keep the hot air (especially in Reno) out of the engine...after testing we foun that the air at the throttlebody, with the scoop open, is over 100 on a 65 degree day. That is with the hood vents open also.
I have use a very expensive piece of cardboard w/ aluminum tape over the cardboard. Temps w/the box were less than ambient which is still 100 for you, but I bet under hood temps are at 130-140.
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Old 07-08-2000, 08:10 PM   #7
malik1
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Location: Reno,NV.
Post

what kind of intake box do you suggest?
I was worried about the temp myself but
after a few discussions figured it was alright without a cold system! especially since the new 2000's (what i have) don't have an airflow/temp sensor on the intake what so ever!!!! I figured it was a lot more receptive to heat!!! any suggestions?
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Old 07-09-2000, 01:01 AM   #8
malik1
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Member#: 1828
Join Date: Jul 2000
Location: Reno,NV.
Thumbs up

I ran my Weapon R Intake filter directly from
my TB and gained 10 HP with 1/2" hosing off
my breather ports adjoined into 1 K&N 3" filter (all ajoined by T joints into 1 breather port with the filter on it!!)
throttle response is insane ... but only
one draw back!!! I have to keep my hood scoop
cover in my trunk incase it rains heavy!!
since it's ram air the water from the cars in front of me wash up into my hood scoop!!!
but it's worth it and I'm from Reno NV. so
it don't rain much here!!!!!! :-)
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Old 07-09-2000, 09:42 AM   #9
ravent
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00/+ RS/OBS
white

Cool

The box is to isolate the throttlebody from the rest of the engine heat, not made out of metal or carbon fiber (even if it is cool to look at it transfers heat like metal...must be the carbon). For every 10 degrees of temperature reduction you get 1-2% increase in power. The enigine will live on hot air but like me, doesn't like it for optimum performance. Cool is kewl
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