Hey everyone,
I'm new to the forums but I have been scouring the boards and the entire web for quite some time now trying to educate myself on tuning.  I rebuilt an 00 S4 I bought with a rod through the block and spent quite some time and money doing it. I had the block re-machined, put in forged rods, and had everything balanced.  Putting it together and getting it running was easy, but I haven't the slightest clue how to tune.....so I got a Vast tune 3 years ago, and since they shut down have never found anyone that can tune it.  Maybe I am just looking in the wrong places, but I am stumped and don't know what to do. I would rather not have to buy yet ANOTHER ecu, the first ECU in this car was sent to Unitronic and they fucked it up.  It came back from them with a huge dent in the case but they refused to take responsibility for it, so I pretty much flushed $700 or so down the toilet.

I have a genuine VagCom, I have ECU-X (though haven't used it) and Unisettings, and an Innovate wideband, but I really just am not sure what to do.  The car mostly sits around these days, if I drive it its just for a cruise, it is just too rich at WOT to be a good driver (literally 8.5:1 AFR or worse, alot of soot and smoke).

I will list my mods just in case it helps,

• Vast Tuned M-Box
• 85mm Hitachi MAF
• Walbro 255 fuel pump
• 550cc Bosch Injectors
• 2.8 cams
• APR Bipipe
• RS4 airbox, accordion hose, inlets, etc. etc.
• K04's (Currently at 23-24psi)
• 2.5" catless DP to 3" straight pipes
• Snow Performance meth setup (twin nozzles)

I have a JHM MBC installed because I was getting low boost pressures with the N75, I am assuming because of the tune. I am sure there is alot of mods I am forgetting, if there is anything important I need to add I will gladly do it. If there is some posts or FAQs that I should read that will help me, please point me in the right direction.  I have been reading alot about UniSettings and using ECU-X to check knock, etc. etc. but to be honest, it is just too much information for me to make sense of.  Any help is appreciated, and if it matters I live in Newport News, VA in case anybody is local and wants to lend a hand!

Thanks everyone, hope that you had a good fathers day.

Thanks for the information, I am downloading TunerPro now and will start reading up on how to use this ish!  My main ecu (M Box) has the Vast tune but I will just try flashing it anyways, I have a spare H box but like I said UniTronic trashed it.  It is useable, I can drive the car with it installed, but it does not run very well.  Emergency backup only really.