Welcome to the North American Subaru Impreza Owners Club Tuesday December 12, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Technical > Normally Aspirated Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Thread Tools Display Modes
Old 07-31-2010, 12:46 AM   #1
Scooby Newbie
Member#: 253530
Join Date: Jul 2010
Chapter/Region: RMIC
Location: Arvada, Colorado
1993 Impreza
Aqua Frost

Default Which Cold Air Intake is the best for a 1.8L?

So i'm trying to milk as much power as i can out of the little 1.8 in my 93 impreza wagon. I know adding a CAI doesn't exactly mean that i'm gonna have instant power but my questions are ; will it add gas mileage and how much power will it add if any?
Is it just better to do an engine swap to a 2.2?
* Registered users of the site do not see these ads.
93Bus is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 07-31-2010, 11:11 AM   #2
Scooby Guru
Member#: 134005
Join Date: Dec 2006
Chapter/Region: MAIC
Location: Pittsburgh, PA
2004 WRX Premium


Better to swap the engine to a 2.2... but if you're going to do that, why not just go with the 2.5

Anywhoooo, the CAI is probably not best. You're really not going to any power down low, but up higher in the RPM range, you'll have a little more. Considering the 1.8 isn't powerful in the first place, I'd hate for you to loose power down low.

I mean, you could always just try it, but I wouldn't spend any $300 or something on a new Injen CAI. That would be a waste of money.
cmiovino is offline   Reply With Quote
Old 07-31-2010, 11:46 AM   #3
Scooby Specialist
Member#: 236927
Join Date: Jan 2010
Chapter/Region: NESIC
Location: Oakville CT
2015 BRZ 93 LEGacy33
1984 BRAT


You could remove the stock airbox, cut the MAF and fit a cone to it. $30, if you don't like it, get a coupler to refit the MAF to the box and put the stock box back on. You will not see a increase in gas mileage with a CAI, you might see less gas mileage because with the car getting more air, it needs more fuel to compensate. With the added air, you will see a noticeable increase in throttle response and your engine will sound a lot louder. Give it a try.
Jessekrs123 is offline   Reply With Quote
Old 07-31-2010, 02:02 PM   #4
Scooby Specialist
Member#: 38222
Join Date: Jun 2003
Chapter/Region: Tri-State
Location: Cicero, NY
'10 &'12 Foresters
another Miata convert


Any modifications to a 1.8L engine will be a waste of money. Don't do any bolt-ons.
LetItSnow is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Which BIG MAF Intake is the best? Tecate Newbies & FAQs 9 12-14-2009 04:48 PM
which intake is the best and the worst? 949 Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) 7 10-23-2005 06:52 PM
which cold air intake is the best? chris-man Newbies & FAQs 14 07-05-2005 05:07 PM
What is the horsepower for a 1.8L? 93Scoobster Newbies & FAQs 6 07-18-2003 09:00 AM
Which cold air intakes work with what FMICs? Diversion Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 14 07-15-2002 08:55 AM

All times are GMT -4. The time now is 11:03 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2017 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.