Engine management

I would recommend SCT tuning. Alternative Auto in Mt. Clemens here uses those chips and he tunes a lot of Mustangs and Cobras with both light and heavily modified modifications. He tunes them to make great power and have great reliability. My car has been running strong for 2 years now, and I eventually want to modify it more to get 480-500RWHP. I know if he tunes it it will be safe.

The stock ECU should be able to handle that with a competent tuner...

Gazman, the stock ECU as already stated will be just fine but....If you are still using the stock MAF & injectors with your KB you will need to make some serious changes before you go anywhere near a 150 shot!!! There are a couple different aftermarket MAF's available for the 03/04 Cobra. Plus you are going to need at least a set of 60lb injectors if you go big with a 150 shot! Keep in mind that NO2 on a supercharged car is not the same as on a N/A car. Even a small shot makes very large gains because of the drop in IAT2 temps it creates.

You need to talk to the pro's about your intended upgrades and I suggest you create an account and post your questions in the Terminator section over at: http://www.modularfords.com/forums/

That's where the "Top" 03/04 tuners hang out and they will have all the detailed information you require to get this little upgrade done, and done right.

U.M.

You can also look into a MAF extender. Billetflow does a nice job.