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Old 03-09-2003, 10:24 PM   #1
NewbyScooby
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Question Will intake systems made for a 2.2 fit a 1.8

Hey,

I was wondering if intake systems that are made for the 2.2 litre imprezas will fit the 1.8 as well? Also if that goes the same for exhaust and headers?

Any info would be helpful

Thanks
Tom
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Old 03-10-2003, 02:33 AM   #2
Kostamojen
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Intakes, if it is a MAF based 2.2 then yes.

Exhausts are more complicated. Some 2.2's are only single port designs while the 1.8 is a dual port, so it depends. All 2.5's are dual ports, so actually items like borla headers for 2.5's work on 1.8's. However 1.8's tend to be OBD-I based engines with only one 02 sensor in the exhaust while newer cars are OBD-II with two exhaust sensors so you might have to plug a hole. But I found that catbacks dont line up due to angles of the flanges and things like that. But mufflers are interchangable.

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Old 03-10-2003, 11:16 AM   #3
NewbyScooby
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That helped alot,

thanks for the help



Tom
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Old 03-10-2003, 05:38 PM   #4
RaceCarRiot
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in my experience, i reccommend against intakes on the 1.8L engines. the car will run richer to the point where it will hurt performance, since the ECU over-compensates for the additional air. removing the silencer, since the car is already drawing cold air from the fender, and going to a freer flowing element in the airbox will work much better than an aftermarket intake. save that money for pulleys or exhaust components.

i ran one on mine for a while, and while the butt dyno claimed it was faster, but in reality, i lost about 5-6hp on the top end, had that lovely throttle lag off the line, and was generally much more temperamental. nothing that would inhibit reliability, but the engine wasn't as smooth and tractable. it DID sound great though.
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Old 03-10-2003, 07:52 PM   #5
DoinkMobb
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I removed the silencer, and felt a little gain and now my car sounds cooler too. But I was thinking of running some piping from the stock airbox down towards the front of my bumper. I cut out the passenger side foglight hole because it was cracked, and figured it would channel cold air up to the airbox.

I wouldn't run piping all the way to the foglight cutout, because I wouldn't want to run the risk of sucking up water. Getting the opening of the intake away from the engine should yield somewhat of a gain.

Think I would benefit from heat-shielding the plastic intake tubing and airbox?
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Old 03-11-2003, 09:05 AM   #6
RaceCarRiot
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nah, the plastic stock system is less prone to heat soak from the engine bay than a metal intake of some sort anyways.
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Old 03-11-2003, 07:22 PM   #7
DoinkMobb
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Quote:
Originally posted by RaceCarRiot
nah, the plastic stock system is less prone to heat soak from the engine bay than a metal intake of some sort anyways.
Word. I dig.
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