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Need to Pep up my 00' 4.0
- Thread starter redxj00
- Start date
bjoehandley
NAXJA Forum User
- Location
- WeGo, Chi-Town, Ill
I did a glorified tune up a couple of weeks back to my '98. I installed Bosch Platinums (single electrode, double and quad electrodes were double and triple the cost of the singles), Mopar Performance 7.5mm wires, drop in K&N filter, stock replacement cap and rotor, and a regular oil change with Moble 1 10w30. It made a noticable difference in performance and fuel consumpion just driving it around and while on a family trip to the James Dean Festival in Fairmount, IN (driving in from the Chicago suburbs), the truck had more than enough power in just about any situation. I'm still running original exhaust and, as far as I know, original O2 sensors on the truck.
Dr. Dyno
NAXJA Forum User
- Location
- Al Ain, UAE
redxj00 said:
You could start by checking out my performance website, going to the "diary" section, and follow the mods that I've done to my XJ over the years. This year I did the ultimate performance mod and built a stroker.
__________________________________________
1992 XJ Laredo 4-dr - 4.6L I6 HO Stroker - 177k miles - AX15, NP231, D35c, D30
Estimated 261hp/322lbft, best new 1/8 mile [email protected]
Websites - Jeep 4.0 Performance, 4.6L Stroker Build-Up, Dino's Jeep Tricks
crystalship1
NAXJA Forum User
- Location
- Indianapolis, IN.
Cheapest HP you'll ever gain is to dump the factory airbox and replace it with an air-tube intake and a K&N air filter.
I used a Rusty's style "poor man's special" air-tube and a 9" long cone-style K&N filter.
Have fun!!! :wave:
http://www.rustysoffroad.com/
I used a Rusty's style "poor man's special" air-tube and a 9" long cone-style K&N filter.
Have fun!!! :wave:
http://www.rustysoffroad.com/
redxj00 said:
bjoehandley
NAXJA Forum User
- Location
- WeGo, Chi-Town, Ill
I've been kicking around the idea of getting another airbox from a boneyard and knocking out the front wall to get more air in with out having to make the mod too obvious.
crystalship1
NAXJA Forum User
- Location
- Indianapolis, IN.
That would help if you also ran the K&N (or Green) designed for the OEM airbox.
However, the air-tube mod looks fine if done neatly. IMHO at least!
However, the air-tube mod looks fine if done neatly. IMHO at least!
bjoehandley said:
Ramsey
NAXJA Forum User
- Location
- Shreveport, LA
if you run a bunch of mud i would htink th air tube with open filter would be a big no, it would for me at least
- Location
- Coshocton, OH
I did this. http://community.webshots.com/album/172456157xRgirG , threw in a K&N, and stuck a Flowmaster 40 on [A little on the louder side sounding better with age though]. It seams to help a little out on the road, but then again it might just be my imagination.
LInk to thread--http://www.naxja.org/forum/showthread.php?t=31683&highlight=cowl+induction
LInk to thread--http://www.naxja.org/forum/showthread.php?t=31683&highlight=cowl+induction
Last edited:
JeepsterXJ
NAXJA Forum User
- Location
- Livonia, MI
Be prepared for a curious whistle if you put a different intake on - sounds like a turbo a lil'
bjoehandley
NAXJA Forum User
- Location
- WeGo, Chi-Town, Ill
I've even noticed a bit of a wistle with just a K&N drop in a completely stock airbox.
Brian Felts
NAXJA Forum User
- Location
- Erin TN
Ive tried the homade k&n air intake.only helped in cool weather.a heat shield might help I tried a phenolic TB spacer from trick flow.never would seal up completely no real seat of pants improvement.The one thing I will stand behind is the 40 series flowmaster You will get your moneys worth w this one.Nevermind the crybabies that cant handle the noise.LOL 
Onkover
NAXJA Forum User
- Location
- Red Bluff CA.
Open up the asperation.. but NOT by knocking a hole in the air box... you will suck water and eveything else like all get out.. believe me. Even the placement of the stock inlet is bad for such things.. but that is another thead.
Bolt on exhast is a good one but if your bottlenecked before the output then it will not help much. Go for a new intake tube and filter like the K&N set up. Even just the drop in will help suck more air into the intake. That is a good start. Then a Poweraid TBS and the Adjustable MAP senson will help. After the go for the exhaust
Bolt on exhast is a good one but if your bottlenecked before the output then it will not help much. Go for a new intake tube and filter like the K&N set up. Even just the drop in will help suck more air into the intake. That is a good start. Then a Poweraid TBS and the Adjustable MAP senson will help. After the go for the exhaust
Dr. Dyno
NAXJA Forum User
- Location
- Al Ain, UAE
redxj00 said:
All right, here's some simple mods to get you started:
1. Rusty's intake with 6" x 9" K&N filter. Build a heatshield around it like the one that I have for my homebrew FIPK.
2. Jeepersn'Creepers 60mm bored TB.
3. Rusty's high-flow cat and Flowmaster cat-back.
