Dials port mafia on 2001 twin turbo lightning.

I have a 7324 mafia on my lightning running about 1200rwhp. The truck ran fine for a couple years now. I took it out and raced it and all was good. Took it back home and it sat for a few days. I then took it out for a little drive and it breaks up anytime I get over 10lbs of boost. It's set to number 3 with a ford GT maf. Data log says I am pegging the maf. I have checked and changed cop, flowed the injectors, spark plugs, battery, alternator etc. runs fine up to the 10lb of boost then just breaks up. Do these just go bad?

[mikel]

it sounds like its could have gone bad, can you see if MAF voltage changes if you move it to a different setting?

I have not switched the settings on it and tried to keep it running. I have way too much money wrapped up in this thing. Last time I tried switching the setting to two, it ran for a few seconds and died.

[mikel]

thats the plan, to see if switching it changes anything, might be best to get it to a good shop.