new m5 owner need help.please!

[cesarortiz23]

so i bought a 06 m5 and first thing i did was a muffler delete and thats about it


a couple of months later i started to have a problem with it

for some reason it doesn't want to start at all.
for a whole day .


the strange part is that the next day when i start it
it does start...



what pops out on the screen is reduce engine admissions.
something like that im not sure.
if you guys can please help me i will appreciate that.

thankyou