Just put my K&N FIPK #57-1509 on my 97, 318 and noticed the same thing.
Lots of sucking sound even at 1/4 throttle. When I first put it on I
thought "oh no my tranny is starting to go". So then is this a good thing
or a bad thing?
Thanks again
Jay
-----Original Message-----
From: Bernd D. Ratsch <bernd@texas.net>
To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
Date: Wednesday, July 18, 2001 5:51 AM
Subject: DML: RE: Re: Gained Power, lost mileage, and what is that sucking
sound???
>
>The noise is coming from the IAC port on the throttle body. Yes, it's
>controlled vacuum leak as well...and that's how the PCM controls idle.
>
>- Bernd
>
>-----Original Message-----
>From: owner-dakota-truck@buffnet.net
>[mailto:owner-dakota-truck@buffnet.net] On Behalf Of Kevin
>Sent: Wednesday, July 18, 2001 5:13 AM
>To: dakota-truck@buffnet.net
>Subject: DML: Re: Gained Power, lost mileage, and what is that sucking
>sound???
>
>
>That is the sound of your K&N sucking in a lot more air than ever
>before. Part of the sound is because the design of your throttle body.
>You probably are getting less miles per gallon because you are in the
>throttle more than before. If you drive more conservative ( which is
>hard to do when you make horsepower mods) you will most likely see an
>increase in gas mileage.
>----- Original Message -----
>From: "Dave" <ded74@yahoo.com>
>To: <dakota-truck-moderator@bent.twistedbits.net>
>Sent: Tuesday, July 17, 2001 18:34
>Subject: DML: Gained Power, lost mileage, and what is that sucking
>sound???
>
>
>> Hey all, I'm back, don't have my new baby, family emergency forced me
>> to postpone my purchase. I have a question for you tho, I put in
>> 3923's and went to a Edelbrock 14x3 open element air cleaner. I
>> gained power (at
>least
>> I can feel it), but I seem to have lost some gas mileage, like around
>> 2
>mpg.
>> And there is also a sucking sound when I'm pressing or letting off the
>
>> throttle, if it's idling or WOT it's ok. My bro said it might be a
>> vacuum leak? Does that sound right, and would that rob my mileage?
>> And if
>that's
>> it, what do I do? Thanks guys.
>> --
>> Dave
>> Denver, CO
>> '93 Sport 4x4 V-6
>>
>>
>>
>>
>
>
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