i'm going to be getting a tbi with an adj fpr on it from a guy on here i dont know if it is vacuum or manual controlled....my question is will i benefit from using a vacuum controlled regulator on my stock tbi....im not getting the tbi for that,but for parts but if i can use that it will be a bonus...its off of an 87 k5 blazer 350....thanks..

 

no benefit unless you can control the increased FP it provides. i ran one on an "untuned" engine and it was of no benefit other than taking a lean WOT to a overly rich WOT. "search will prove the answers. i will suggest it increases FP at WOT about 8 lbs and that is too much. IMO.