Good afternoon everyone,
We have a 06 mustang GT in the shop that has a Steeda/Maggie MP112 that is having some cold start idle issues. We usually do not do any Ford work but this is a great customer and friend and I would like to help him out. On to the problem.
The car has a tendency to high idle on a cold startup. It will start and run at about 1400rpm, then drop to 1200-1300, then shoot up to 1800-2800 rpm and slowly start working its way back down. When it drops to about 1000 rpm it feels like it gets rich and stumbles a couple of times.
I attached a data log and you can see that when looking at the O2 sensors that it is running really rich and during the idle flare it is running 0* of timing. I am not good with Fords and know very little, I would like to at least have a base knowledge and will be doing a lot of searching tonight. That being said I will take any advise I can get!
Thank in advance!!!
Tune and Log is attached, if you need any more data or want me to log specifics let me know and I will make it happen.