Originally Posted by ratmonkey
Dodge/jeep uses sequential multi port injection.
Fuel synch would not be nearly as critical if it didn't.
10* out of synch and you'll have higher end power issues and a rough idle. By 15* it'll start but you wont be able to drive it.
The snap on unit is just as expensive and few garages carry it or a drbiii.
I stand corrected on the sequential injected, I was thinking of an older model, and as the reluctor ring only has one opening I was under the impression it was batch fire. I don't have a tuner for the obd 2 on a jeep. so I had no need to know. It's cheaper for me to go with a mega squirt computer than buy or build a tuner! However we seem to disagree on the 4 degree advance! I will agree that if the reluctor ring was a few degrees out of sync, then it might start to pose a problem. But if the reluctor ring was out of sync then I would think due to the small dizzy cap, there would also be rotor phase problems. Which could be mis diagnosed as a fuel sync problem. Any ho there is still so much to learn