This is a question maybe for science of speed themselves or other members who may know. I’ve been trying to do some research on the stage 1 kit and the FVM controller that SOS provides. I am interested in going air to air, despite the possibility of losing some boost I feel that an air to air setup is just better and less complex than the aftercooler with pump, and hoses to worry about. Anyway, if I ran a stage 1 hit with headers, intercooler, catback. Are these going to affect the FVM or will the ecu be able to compensate? Basically I want to know if the kit is only designed to be ran on an otherwise 100% stock setup.

 

You could run it safely. The issue is how much boost are you going to lose remains to be seen and will depend on the pipe size and overall size of the exchanger. With just the base size pulley, its possible you might only see a couple psi of boost and not be where you think you are going to be powerwise. You could in effect reduce the pulley size to spin up the blow more to compensate. You are playing with efficiency thresholds here, with the blowers most efficient rpm range, boost loss and IAT. For most Novi Supercharger application the standard air to water set up is more efficient at making power overall, especially when coupled with the larger racing size heat exchanger. If you are dead set on an fmic though, I would plan on running a smaller pulley to maintaining the 6-7psi you are after with the stage 1. The FVM will will do what it does regardless of boost pressure, with the bulk of the fuel tuning done via the adjustable rising rate fuel pressure regulator that also comes with the kit.

So my advice. Run a wideband to see your afr for fuel tuning, and run the standard pulley and monitor your yield via gauge and go from there, run a smaller pulley to bring your boost back up if needed. You will be leaving power on the table if you net 4-5psi and leave as is. That would be lame and surely slower then a standard 6-7psi with water/air.

 

Thanks, that actually answers my question perfectly! I didn’t realize that most of tuning was done via the fpr. But it is very simple so why wouldn’t it be that way right? Lol. Yes 4 psi would be lame. My main worry was that the small heat exchanger in the stage 1 is too tiny but upgrading to the larger would probably be my best bet. The ambient air here in texas can be brutal so an air to air could possibly be a hindrance in that regard. I was basically trying to gain some more info on this kit and you did just that. Thanks a lot