I have a 96 and I have sitting around a 99+ intake manifold, 703 injectors, and a new apn header. Will there be any clearance problems with the 99+ intake manifold and the new header? Also do the 99 intake manifolds pretty much just bolt on to a 96? No new power steering bracket and fabrication of any kind? The 703 injectors will fit in the 99+ intake manifold right? Any feedback is greatly appreciated and I want to do all 3 upgrades in one swing since I have to take off my intake manifold to get to the exhaust manifold anyway. Thanks.

 

Yes. You'll need to dimple the #6 exhaust pipe on the APN header.

I have a 92 so I can't give specifics. On mine I had to make some vacuum lines. I also needed to run the newer P/S pump and bracket and a different drive belt.

Yes. I had to get the higher pressure fuel regulator for the 703 injectors. It's a direct replacement for the stock one.

 

I have a 99 and when I installed the APN header I had to shave down a little bit of the intake manifold. I just used a File and some elbow greese. I also hit the exhuast to put a dimple in it but the intake manifold shave helped the most.

Other than that it should be a straight bolt on

 

Awesome thanks guys! Installing all tonight wish me luck i'll let you know how it goes.

Happy Holidays

 

My 99+ intake and 703 injectors don't get here until Friday so I got impatient and installed the header last night which was okay because there were 2 huge cracks in it. 6 hours, sweat, blood, and lots of swearing later, she sounds great. I can feel a little bit of a power increase as well she spins em a lot easier but then again, itcould have been cold tires. Had I known that it was going to be such a beach I would have been patient and done everything on Friday. Oh well, now it will go twice as fast this weekend lol. I also must buy RATCHETING WRENCHES.

 

wow! I thought my engine bay was clean

 

Got lucky on this one it's been in San Diego it's whole life with 89,xxx original miles on a 96. It'll be getting really dirty soon enough haha.

 

99+ intake and injectors are here. Have some quick questions with vacuum line and IAT sensor relocation. How'd you guys do it? Lol. Anyone snap a pic or 2 of theirs? Want to make sure i'm doing it right. One of my vacuum lines also cracked when I was putting the header in and is super glued right now. Is it okay to just run black rubber tubing for vacuum lines? I think that would be a lot easier to work with than the nonflexible, brittle, plastic OEM vacuum lines. Thanks.

:Edit: Oh and one more thing do I need a new fuel pressure regulator for the new 703 injectors?

 

I think youd be ok.

Some guys just drill a hole in the airbox tube and and put there IAT there.

I havent done my sway yet but why do you need to change where the IAT is?

 

Holy. ****. I winged it and I DID IT. 99+ intake manifold, and Apn header ARE ON and functioning splendidly. No vacuum leaks, idles good, revs good. Man, talk about seat of your pants this thing moves!

Now the bad thing I snapped a throttle body bolt. Hopefully I can get it out but it snapped so the TB is secured tightly to the intake manifold.
It's in a different location on the 99+ intake and the wiring isn't long enough so I need to make it longer. Hopefully i'm using the right kind of wire.

 

Did you use 99 injectors?

I was hoping to use my 98 injectors, I dont want to have to deal with the connector issue.

 

Mine is a 96 so I swapped in the 4 nozzle 703 Neon injectors. Cherokee's 97 and up are the 784 injectors mine are plug and go the 784's should be too.