I curently have a mail order tune for my NA 383.I am planning on putting a D1-sc on the car.Wich is the better program LT1 edit or tunercats.

 

Tunercats by far. More functionality, cheaper, not vin locked.

 

I agree. I learned to tune my truck w/ LT1edit, seems a little better sorted than tunercats, but tunercats goes deeper into the program giving you more tuning options, and as stated, it's not vin locked so you can use it on other vehicles.

 

Tunercat.

 

I use tunercat!