Robert. I have known Alan close to 4 years now. He has treated that car like it is his baby since the day he got it. That car ran absolutely perfect since the turbo was put on and then you buy it and have a turbo timer and new alarm put on then you start experiencing problems.
There is a reason why people are blaming the person that put on the alarm or turbo timer....it's because the wiring was not done properly.
You should never, ever, ever splice into any wires inside the engine bay. The engine bay is not waterproof. It experiences extreme heat and humidity all the time along with lots and lots of direct contact from water due to all the rain that we have down here. Why would it take a week to have problems? Maybe because it just took that long for vibration and/or humidity to take their toll.
I replaced ALL of my underhood wiring on my car. I can tell you from experience that if there is the slightest bit of exposed wiring inside that engine bay that you WILL experience problems. Those 3M splices or whatever those are on the coil pack are probably the problem. It could be that or the splice off the white w/ blue stripe wire off the main engine harness...or the exposed wire on the IAC.
Whomever did the wiring work....whether it was you or some 'professional' shop did NOT KNOW what they were doing. Why would you splice into the coil pack????? Why???
Another thing....why did you replace the factory alarm? The alarms in these cars disable the starter. If somebody bypasses the alarm somehow the car still won't start because the ignition key itself has an electronic security feature. Honestly, you're lucky the new alarm didn't somehow screw all this up.
The point that I and everyone else is trying to make is....somebody screwed up the car since YOU'VE had it. Take it back to whomever worked on it and have them fix it. Troubleshooting electrical issues in your car will be impossible until you fix the wiring under the hood. Fix all those and make them waterproof and then see if the car runs well.
I have a fuel charge harness if you need one to replace the one that looks ruined on your car. PM me if you want to buy it.
You can go to this link
underhood wiring harness recall to see just how complicated this sort of issue is to fix.