I am getting a 87 Grand National off a friend, He did some work on it that didn't turn out very good, He ran the car about 4 times last year, He turned a best of 11.18 at 20 lbs of boost, 61 turbo, 50# injectors, Aluminum heads and so on, He is really not a race car driver, The car has the best of everything and is a 7,000 mile 2 owner car, He had the mufflers took off and two 21/2 inch stright pipes, Put a 4 inch air intake on with LS1 Maf, With the 4 inch tube he could get the 6th and 7th injectors back in, Now the car runs awful, If you give it full gas it dies, He has no laptop and doesn't really know how to put the parts on, Should I put the car back the way it was or what