Cherokee Myth Busting
01-09-2011 | 01:42 PM
#16
CF Veteran
Joined: Sep 2010
Posts: 1,992
Likes: 0
From: West Bloomfield,MI
Year: 1996
Model: Cherokee
Engine: 4.0L, CAI, Edelbrock Breather, Optima Yellowtop
I drove my xj with just a cat for a few weeks, and yeah it was loud (I didn't think it was ticket worthy, but unfortunately an officer disagreed 
, though I don't think he'd have pulled me over if my registration hadn't been dead), BUT I didn't notice any mpg loss or power loss other than maybe a little low-end torque... maybe. Also no check engine light. So I guess the effect of the muffler varies from xj to xj.
01-09-2011 | 03:54 PM
#17
CF Veteran
Joined: Oct 2010
Posts: 2,150
Likes: 12
From: Ontario, Canada
Year: 1989 Laredo
Model: Cherokee
Engine: 4.0 L 6 Renix
Power?
Does pullin the plastic venturi tube from the air tube at the air box really provide a measurable increase of airflow to the throttle body, does it result in a measureable performance improvement?
01-09-2011 | 04:01 PM
#18
Thread Starter
CF Veteran
Joined: Mar 2010
Posts: 6,685
Likes: 5
From: Jacksonville, FL
Year: 92
Model: Cherokee
Engine: 4.0
Ok, ill start looking into these.
The mpg test will come first. And the dyno test will have to be later as I will have to recruit test jeeps
The mpg test will come first. And the dyno test will have to be later as I will have to recruit test jeeps
01-30-2011 | 12:20 AM
#25
Senior Member
Joined: Jan 2011
Posts: 596
Likes: 0
Model: Cherokee
Originally Posted by 1996XJSport
Yeah the low end torque wasn't there at all.... When I got back to school the following monday, I grabbed the diagnostic computer and plugged it into my obdII port to see what the fault code was and it was the catalytic converter sensor. After I installed my muffler and dual pipes, the check engine light turned off. Weird I guess
I took every one offered. Sorry I know this is off topic,btw I xj gets 15city 17hwy on a good day.
01-30-2011 | 02:10 AM
#26
CF Veteran
Joined: Sep 2010
Posts: 1,992
Likes: 0
From: West Bloomfield,MI
Year: 1996
Model: Cherokee
Engine: 4.0L, CAI, Edelbrock Breather, Optima Yellowtop
Originally Posted by black_police_xj
heres one for you..,
Why is it that in 2wd I get 14 -15 mpg and in full time 4x4 i get 17 mpg?
Why is it that in 2wd I get 14 -15 mpg and in full time 4x4 i get 17 mpg?
01-30-2011 | 02:17 AM
#27
CF Veteran
Joined: Sep 2010
Posts: 1,992
Likes: 0
From: West Bloomfield,MI
Year: 1996
Model: Cherokee
Engine: 4.0L, CAI, Edelbrock Breather, Optima Yellowtop
Originally Posted by Cnwxj
Are you in high school? If so I think it's awesome that some hs still have shop class. I live in Indy and I was the last class to have shop at my school
I took every one offered. Sorry I know this is off topic,btw I xj gets 15city 17hwy on a good day.I took a welding class last year and it was the last class before the teacher who was a vietnam vet, retired. Tons of cool stories, and I learned tons from the man.
You live in indy? My dad lives near south bend! Haha
Youre lucky you get 15-17. my stock 92 gets that but I don't drive it much since I don't live with my dad and it's parked in his garage at the moment haha
01-30-2011 | 02:27 AM
#28
Member
Joined: Dec 2010
Posts: 163
Likes: 0
From: fairmont wv
Year: 1996
Model: Cherokee
Engine: 4.0 HO
The high school i went to has a vocational center. I enrolled in it as an adult finishing up my electricians class and getting journeymans, next is welding.100$ a class ya cant beat it.
01-30-2011 | 12:10 PM
#29
Member
Joined: Dec 2010
Posts: 111
Likes: 0
From: Ionia, MI
Year: 1997
Model: Cherokee
Engine: 4.0 I6 Power Tech
01-30-2011 | 02:01 PM
#30
CF Veteran
Joined: Sep 2010
Posts: 1,992
Likes: 0
From: West Bloomfield,MI
Year: 1996
Model: Cherokee
Engine: 4.0L, CAI, Edelbrock Breather, Optima Yellowtop