2004 Jeep Wrangler 4.0 w/ Auto trans. 4.6 stroker build running rough

Hi all,

Hope someone can help me with this.

I built a 4.6 stroker for my 2004 TJ, and I'm having all kinds of issues with it running right.
It starts right up, vibrates like crazy, eventually smooths out a bit, and runs enough I can drive it to work and back. (I go super easy on it.)
I don't hear any pinging or knocking, there's no Check engine light, it idles fine for the most part, and during acceleration it vibrates like its stumbling on itself.

I have checked and double checked the base timing and the installment of the cam sync, both are set properly as far as I can tell. (I'm used to distributors). The PCM is original. I've replaced the coil pack, cam/crank sensors. Gave the wiring harness a serious manhandling listening for any signs of changes, and no difference.

I have a very basic scanner that lets me see some live stream data and I've been watching it as I drive. At idle, timing adv. ranges between 7.5 - 14 degrees, most of the time, and goes to around 34 or higher when i give it small amounts of gas. A couple of times it remained at 27 while at idle. Other times it will hit 0 when i let off the gas. The bank 1 stft (short term fuel trim), O2 numbers, are relatively numerically close to their bank 2 counterparts; I don't see any drastic differences, and the numbers are pretty low both in both pos and neg ranges. That said, I have never looked at the live data before so I have no idea what's normal and what's not.

None of the shops where I live will work on it cause I've done too much to it. Can anyone help? Is there such a person I can contact that can tell me what equipment to buy so they can remote in and help diagnose the issue(s). I'm quickly becoming a parts changer, and I hate that, but have no other alternative at the moment. It's getting expensive really quick with zero improvement.

Thanks!

R

Are you running standard cams or did you adjust to the stroker?

If you had an opportunity then an in cylinder pressure capture this would be helpful.

Otherwise you could go full range of "standard" tests like (running) compression, engine vacuum, volumetric efficiency and so on and so forth. Keep in mind that the original pcm mapping isn't made for a stroker so you may get never get nowhere with your mod.

Hi, thx for the reply.

Here's my build: (pardon the caps)
ICON 4032 FORGED PISTONS D-CUP 9.3 compression
HASTINGS MOLY PISTON RING SET
EAGLE STROEKR CRANK
SCAT 4340 FORGED RODS BUSHED
CLEVITE ROD BEARINGS
CLEVITE MAIN BEARINGS
BALANCE ROTATING ASSEMBLY
24#LB FUEL INJECTORS
Comp cam SKU 163-301-5,
Non adj. Harland sharp roller rockers
SA gear timing chain and gear kit.
Banks Torque Tubes header
edelbrock head

I realize the pcm will need to be modified to get max benefit from new engine, however, all the research I've done indicates the factory pcm is more than capable of running this engine without any moding needed.

Do you know what the normal operating parameters for the jeep I have are?

Thx!

R