Thank you for the reply I'll try and give a little more information I had done a lot of reading before I started this upgrade I guess some how I missed that 2 bar MAP is a must I'll get a 2 bar today hopefully ok for boost I'd like to run about 12 psi it on 8 now and I have a boost controller installed already I must of read some bad info on SD tuning I'll get the 2 bar installed and get update my information on here looking forward to getting this thing into a beast Not to change subject but I have a 04 5.3 70mm turbo ranger that will chew this lt1 up and spit it out and 5.3 stock all but injectors its a bad ride but anyway thanks for all the help Laney