what can cause...help please!
 

my car if a fresh rebuilt motor had alot of problems with it everything fixed except it sputters when im driving and it feeels like theres hardly power low end any help would be really nice thanks guys...

You might start by mentioning if the car is turbo or na, what year, what was changed recently, etc...

bump sorry its a 86 s4 t11 the whole motor was rebuilt so its kinda hard to say it sputters from around 2800rpm and up to about 4000rpms cant go past that because im breaking it in and also the low end is really bad i have trouble going up even samll hills if anyone has imput lmk thanks

well if your breaking it in....its gonna be sluggish cause its building compression. Im currently experiencing sluggishness but the motor is getting stronger every day....the more you drive it the better for the motor. Just keep breaking it in....then if you are experiencing same problem around 1500-2000 miles on the motor...come let us know.

will breaking in the motor cause sputtering to well lmk if it could if not thanks man!