plenum volume does not seem to increase performance, in fact, from the
article and paragraph you reference:
"The drawbacks are a weaker vacuum signal, a slower throttle response, and a
slight loss of torque from idle to 2000rpm due to the larger plenum."
This article does not reference tb spacers.
Rascal
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Kyle
Vanditmars
Sent: Friday, June 17, 2005 9:03 PM
To: dakota-truck-moderator@bent.twistedbits.net
Subject: Re: DML: RE: Throttle body spacer
Rick Barnes wrote:
> Please explain how it could have a "tuning effect that will improve air
> flow"...just curious how a spacer could "tune" anything.
>
> Rascal
they change the plenum volume... I've heard because the jeep inlines
have really small plenum, increasing plenum volume can boost power.
http://www.jeep4.0performance.4mg.com/intake.html <--scroll to 3rd paragraph
whether this applies to both the 4.0L and 2.5L manifolds, I don't know.
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