magnacharger sc installation problems

[HGW]

flh2fan:
I am happy to answer your question. We are all here to learn as well as share.

I have the stock magneson sc tune in my H2 for now. I use the predator for adjusting shift points, shift pressure, tire size, etc. The adjustments make my H2 run well by shifting at the right time with a firmer shift.

When you buy a predator, the first thing you do is download your "stock" tune. It is saved so you can put your pcm back to the point BEFORE you installed the predator. In my case, my "stock" tune was the tune for the sc using the superchips installed as part of the sc install.

In reality, you download the tune that exists when you install the predator.

Next season, I will use the predator tuning features to adjust my sc tune--in effect customizing it from that provided by superchips. I will collect data on the track using software that will read my pcm data after each 1/4 mile pass. Only then will I experiment with adjusting the tune using the predator. And, I will do it using small adjustments.

I will nvere install the tune that comes with the predator. It does improve performance BUT it is not to be installed on sc'd machines.

BTW. I highly recommend at a minimum that you have a boost guage and a fuel pressure guage installed. Knowing at all times what these reading are will help monitor sc performance. I also recommend and exhaust temperature guage if you run the 1/4 mile or tow. A lot of sc's fail due to excessive heat. What happens is that a client runs the sc hard and then turns the engine off. The heat at that time cannot be disapated and valves or pistons fail. If exhaust temps are high, leaving the engine running while the temp comes down, will usually save an engine.

I will be curious to know the reason you have no compression in two cylinders. It could be the head gasket or screwed up valves, or even worse, bad pistons. In most cases, heat would be the cause. Hopefully your install was correct and this is just a simple problem. Please keep us posted.