Any way to improve idle ?

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04-08-2014, 08:37 AM

#11

jz78817

4th Gear Member

Join Date: Jul 2011

Location: Michigan

Posts: 1,329

Quote:

Originally Posted by jimkaray

Any tune? A performance tune will enhance the the exhaust note some. Probably some remote adjustable exhaust cutouts would be just what the doctor ordered:-)

the 4.0 doesn't have VCT so I don't see what a tune would do.

04-08-2014, 11:58 AM

#12

jimkaray

4th Gear Member

Join Date: Aug 2007

Location: Stroudsburg, PA

Posts: 1,148

Quote:

Originally Posted by jz78817

the 4.0 doesn't have VCT so I don't see what a tune would do.

Just because there is no VCT doesn't mean the timing can't be advanced.
If a loppy idle is what you want you'll need to swap cams.

04-10-2014, 11:42 AM

#13

Vic909

Thread Starter

Join Date: Apr 2014

Location: California

Posts: 5

Quote:

Originally Posted by jimkaray

Just because there is no VCT doesn't mean the timing can't be advanced.
If a loppy idle is what you want you'll need to swap cams.

Know where I can find some for the 4.0?

04-10-2014, 06:10 PM

#14

Stangbass

2nd Gear Member

Join Date: Dec 2009

Location: Oklahoma

Posts: 152

The 4.0l is quiet at idle. I've heard many different exhaust videos, and these engines just aren't that loud at idle. A mod that would make this engine loud at idle would likely make it unbearable with any acceleration.

Swapping cams (big $$$) likely won't make the idle much louder, neither will a tune. The only reasonable thing I could think of would be to raise the idle a few hundred rpm with a handheld. I've noticed when the engine's racing from a cold start the exhaust is noticeably louder then it quiets way down when it settles to idle.