Performance chips
Senior Member
Joined: Aug 2010
Posts: 1,012
Likes: 1
From: NC/SC
Year: 1990
Model: Cherokee
Engine: 4.0
Dude everyone knows that throttle body spacers add the most HP.....
ok seriously though, no. chips and throttle body spacers dont do ****. In order to see some gains in HP and throttle response heres a short list of some simple things you can do to improve how your vehicle runs without spending an assload of money.
-seafoam the engine
-give it a full tune up (rotors, cap, sparkplugs, wires, coolant flush, oil change)
-if you havent done so already remove the stupid accordion looking crap in the intake tube.
-swap fuel injectors to the ford 5.0 injectors (better spray pattern)
-newer intake system
more stuff to improve performance (cost a bit more than mentioned above)
-bored out throttle body (not a spacer and only works on HO engines, but since your asking about performance chips Im assuming you have an HO so this should work)
-headers
-new exhaust system (catback, and while your at it Id replace the cat with a highflow one anyways as its probably not doing anything now)
ok seriously though, no. chips and throttle body spacers dont do ****. In order to see some gains in HP and throttle response heres a short list of some simple things you can do to improve how your vehicle runs without spending an assload of money.
-seafoam the engine
-give it a full tune up (rotors, cap, sparkplugs, wires, coolant flush, oil change)
-if you havent done so already remove the stupid accordion looking crap in the intake tube.
-swap fuel injectors to the ford 5.0 injectors (better spray pattern)
-newer intake system
more stuff to improve performance (cost a bit more than mentioned above)
-bored out throttle body (not a spacer and only works on HO engines, but since your asking about performance chips Im assuming you have an HO so this should work)
-headers
-new exhaust system (catback, and while your at it Id replace the cat with a highflow one anyways as its probably not doing anything now)
Thread Starter
Member
Joined: Jun 2011
Posts: 161
Likes: 0
Model: Cherokee
Originally Posted by sam24th
Dude everyone knows that throttle body spacers add the most HP.....
ok seriously though, no. chips and throttle body spacers dont do ****. In order to see some gains in HP and throttle response heres a short list of some simple things you can do to improve how your vehicle runs without spending an assload of money.
-seafoam the engine
-give it a full tune up (rotors, cap, sparkplugs, wires, coolant flush, oil change)
-if you havent done so already remove the stupid accordion looking crap in the intake tube.
-swap fuel injectors to the ford 5.0 injectors (better spray pattern)
-newer intake system
more stuff to improve performance (cost a bit more than mentioned above)
-bored out throttle body (not a spacer and only works on HO engines, but since your asking about performance chips Im assuming you have an HO so this should work)
-headers
-new exhaust system (catback, and while your at it Id replace the cat with a highflow one anyways as its probably not doing anything now)
ok seriously though, no. chips and throttle body spacers dont do ****. In order to see some gains in HP and throttle response heres a short list of some simple things you can do to improve how your vehicle runs without spending an assload of money.
-seafoam the engine
-give it a full tune up (rotors, cap, sparkplugs, wires, coolant flush, oil change)
-if you havent done so already remove the stupid accordion looking crap in the intake tube.
-swap fuel injectors to the ford 5.0 injectors (better spray pattern)
-newer intake system
more stuff to improve performance (cost a bit more than mentioned above)
-bored out throttle body (not a spacer and only works on HO engines, but since your asking about performance chips Im assuming you have an HO so this should work)
-headers
-new exhaust system (catback, and while your at it Id replace the cat with a highflow one anyways as its probably not doing anything now)
Newbie
Joined: Nov 2011
Posts: 14
Likes: 0
From: Los Angeles
Year: 1999
Model: Cherokee
Originally Posted by m2carbine
None of them are really worth it for the 4.0 waste of cash. use that money and upgrade the injectors,cold air system,bored intake,manifold,exhaust.
Senior Member
Joined: Aug 2010
Posts: 1,012
Likes: 1
From: NC/SC
Year: 1990
Model: Cherokee
Engine: 4.0
I cant stress how much a good tune up will improve your engine performance especially if the PO has somewhat neglected. Not sure how old your jeep is or what kind of condition the engine is in, but a good tune up wont hurt. It improved my fuel economy greatly compared to the day I got it and runs great now. Swapping injectors to the ford ones is a good upgrade also, it seems throttle response was better after the swap.
Senior Member
Joined: Aug 2010
Posts: 1,012
Likes: 1
From: NC/SC
Year: 1990
Model: Cherokee
Engine: 4.0
If you upgrade the injectors you have to do a hard tune- no "soft tune" chip can change injector band width. I installed a throttle body spacer on mine and it gave me a bit more torque. I also have a "volo chip" but i have it tuned for my hydrogen generator. With any ecu mod at all you will have a tough time getting gains if you dont have forced induction or at least supporting external mods. Ive been tuning cars for a while and thats just my experience.
Newbie
Joined: Dec 2011
Posts: 17
Likes: 0
From: Southern MI
Year: 92
Model: Cherokee
Engine: 4.0
i've seen several guys swap in 1.7 rockers and i've heard that they make/made blowers too i think they were like a spirew or some weird of brand. idk what reliability those have. i'm a 1/4 mile guy and haven't heard of that brand. i was planning on 5.0 injectors, the rockers, header and exhaust just to start.
Newbie
Joined: Nov 2011
Posts: 14
Likes: 0
From: Los Angeles
Year: 1999
Model: Cherokee
Originally Posted by trench_fighter
i've seen several guys swap in 1.7 rockers and i've heard that they make/made blowers too i think they were like a spirew or some weird of brand. idk what reliability those have. i'm a 1/4 mile guy and haven't heard of that brand. i was planning on 5.0 injectors, the rockers, header and exhaust just to start.
Member
Joined: Jan 2012
Posts: 117
Likes: 0
From: maquapit lake, NB, Canada
Year: 1999
Model: Cherokee
Engine: 1997 4.0 litre
i have a superchips flashpaq programmer. it gave me smoother acceleration, slightly faster acceleration, and a slight increase in fuel economy
Senior Member
Joined: Mar 2011
Posts: 643
Likes: 0
From: San Antonio, TX
Year: 2001
Model: Cherokee
Engine: 4.0L
From MY research you should buy these things.
Bored tb> https://www.cherokeeforum.com/f11/bo...le-body-77044/
Injectors> https://www.cherokeeforum.com/f11/78...ectors-110829/
Header> http://www.ebay.com/itm/STAINLESS-ST...item27c3031144
Exhaust> flow master, magnaflow, banks, cherry bomb, ect.....
Bored tb is like $75 shiped then he refunds $25 back if u send your old one.
Injectors are like $70 shiped they are cleaned and rebuilt.
So Pretty much by adding these things to your jeep you should have a little more hp But with me doing all this reading the one real thing you can do to get alot of hp is either turbo it, super charger, or stroker. all of which cost more than $1000
Bored tb> https://www.cherokeeforum.com/f11/bo...le-body-77044/
Injectors> https://www.cherokeeforum.com/f11/78...ectors-110829/
Header> http://www.ebay.com/itm/STAINLESS-ST...item27c3031144
Exhaust> flow master, magnaflow, banks, cherry bomb, ect.....
Bored tb is like $75 shiped then he refunds $25 back if u send your old one.
Injectors are like $70 shiped they are cleaned and rebuilt.
So Pretty much by adding these things to your jeep you should have a little more hp But with me doing all this reading the one real thing you can do to get alot of hp is either turbo it, super charger, or stroker. all of which cost more than $1000