Brain fart question 914-6 Options

[mb911]

So I am helping a member put brakes on his 914-6 conversion and then put carbs on it. He previously has a poor working sniper setup. It ran ok prior according to him. Then they switched to a 123 dizzy and removed the MSD ignition and then took to a tuner prior to my part. It ran much worse once the 123/MSD removal. The owner decided he was done with his sniper setup and asked me to put carbs on. I did that and for the life of me we can’t get it to run right. Starts pretty easy and idles decent. When I go to throttle up by hand on the cross bar it doesn’t want to accept all the fuel and shoots quite a bit back up through the horns. My suspicion is a major timing issue as in 180 off. The carbs are new and setup up by Dave Chenny so very confident in them. Seeing as the car is 1.5 hours away each visit I am looking for a bit coaching here. What else should I be looking at? The engine is a fresh 2.7 not built by me with about 1000 miles on it.

Help with some ideas please.

[technicalninja]

What year is the motor? The SC motors turn the distributor backwards from the others, and if you time it like an early motor, it will idle but won't do squat otherwise.

Right there! That is the type of info I don't know yet as I haven't had years of 911 motors...

Thanks for posting. I'll always keep that in the back of my thoughts when jacking around with 911 ignition. Some of these puppies rotate the distributor BACKWARDS!
Verify before light up!
That would be a wierd set up. 2 cylinders good and 4 cylinders at 60 or 120 degrees out.

One thing all these posters should remember is that mb911 is a MASTER!
He really doesn't need to be told "clean plugs".

As I have shitloads less experience on these as he does, I adjust my responses accordingly.
My baseline suggestions are what I do when I'm stumped. They may not work for him.

I still think he has internal problems. He's had a wizard do the carbs, he, himself is competent with ignition systems.
CDI vs ID shouldn't make a rat's ass of difference regarding his issue. Both should work fine at idle and tip in.

I'm interested in what the root is in this case.
I ALWAYS hunt the root!

Iridium just means they are so brittle that you have to be damn careful when checking/adjusting gaps. I would guess 100K life span in a 911 motor.
In a Camry I tell my customers, "No PM plug changes, wait till it bitches, 165k+ is where I see IRs fail in modern vehicles.