View Poll Results: CAI for subaru 2.5 RS
it is ok to have an intake
16
94.12%
no it is bad for health
1
5.88%
Voters: 17. You may not vote on this poll
mechanic @ subaru dealer tells me...
06-20-2004 | 08:36 PM
#1
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mechanic @ subaru dealer tells me...
that cold air intakes are not good for the subaru engine, and told me to put in my stock immediately. but then i was told by another mechanic at a different subaru dealership, and they told me it is ok. who do i believe?
btw i have a 2000 2.5 RS with cobb cold air intake.
btw i have a 2000 2.5 RS with cobb cold air intake.
Last edited by dubc15; 06-20-2004 at 09:35 PM.
08-03-2004 | 09:30 PM
#5
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he may just be trying to scare you if you cange your intake with no engine work the engine was used to a certian range now you are changing it, it can have bad effects usually only on older engines though..... i know my 94 legacy would not benifit much from an intake loke at the stock air flow and the cold airs air flow
08-04-2004 | 01:11 AM
#7
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From: Reno, NV
Car Info: 1993/2000/2001 GF4 mostly red
On a MY2000 RS, a Cobb won't cause any problems. However, if you're sill in your warranty mileage, they can claim that it caused any major internal engine damage related to detonation. It's bogus, but legally it would standup.
08-05-2004 | 10:18 PM
#9
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Joined: Nov 2002
Posts: 56
It's ok to have an intake (CAI or not) on a Maf based car. What's important is the diameter of the intake. 3" intake piping diameter on a maf based 2.5RS causes a lean condition above 5300rpm. Note I say maf based 2.5RSs. Map based 2.5RSs seem to not have this problem for the most part. I dunno if it's the flow/velocity of the intake aire, sound resonance from the cylinders, a combo or that some intakes aren't as stable as the stock one (Short ram intakes tend to 'shake' the mafs to death some believe) but if you go the intake route, also be sure that it's secured to the engine not the engine bay/wall. You want to intake to move with the engine and not fight against.
Get an intake with piping diameter that doesn't go above 2.75". 2.5" is ok and doesn't cause a lean condition at high rpms. Also be sure it's secure and everything should be fine.
Get an intake with piping diameter that doesn't go above 2.75". 2.5" is ok and doesn't cause a lean condition at high rpms. Also be sure it's secure and everything should be fine.
Last edited by Myxalplyx; 08-05-2004 at 10:21 PM.
08-09-2004 | 01:47 AM
#11
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from what I hear (and log) subarus run rich at high RPM's anyway. I can't vouch for a turbo, but I see no reason why allowing more air to enter the engine easier is a bad thing. Though you -probibaly- won't see much in the way of horsepower without other mods.
08-09-2004 | 02:11 AM
#12
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From: Reno, NV
Car Info: 1993/2000/2001 GF4 mostly red
Originally Posted by Jotun
from what I hear (and log) subarus run rich at high RPM's anyway. I can't vouch for a turbo, but I see no reason why allowing more air to enter the engine easier is a bad thing. Though you -probibaly- won't see much in the way of horsepower without other mods.
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