okay I may be barking up the wrong tree here but I was looking for info on tuning of the "late model ecu" I have been told it is possible on the 90-92 models, but there is so many post in the tuning section everyone skips the basics. so starting from scratch what would I need to do the tuning how is it done and so on. Also I was wondering what all would require tuning of the ecu? I currently have the stock ecu for my car, but somewhere down the line a 5.7 replaced the original 5.0 the intake is from the 5.0 (assuming from the grey injectors) The car already has and aftermarket exhaust from the y pipe back,I have already preformed the egr/air delete and will be here shortly installing a new set of headers (keeping the O2 set up). After awhile on the high way I do get a code complaining about the egr, I could live with it if I had too. I would like to put a new cam in it (please correct me if I am wrong but would a cam effect the operation of the fuel delivery?). Then the fallowing race season(different block actually) bore it out and stroke it. any help is appreciated

 

You should look at the stickies in the DIY prom section , all the information is there for getting you started with the $8d mask.