Subaru SVX Stage Two FAQ's

1. Can i use stage 2v7 without the z32 maf meter or without sr20det 370cc fuel injectors?
   No, the software is precisely calibrated to use that sensor and those fuel injectors.
    
2. Will stage 2v7 make my SVX faster even if I don't do any other performance modifications?
   Yes stage 2v7 is tuned for performance and will make an otherwise stock SVX noticeably faster; however, that performance tuning is also offered in our Stage 1v5 software.
    
3. I'm not going to do any other modifications to my car should I get stage2v7 instead of stage 1v5?
   No, stage 1v5 will offer very similar performance when used on a stock SVX.
    
4. When should I get Stage 2v7 instead of stage 1v5?
   
   1. you want to turbocharge or supercharge
   2. you want to run a dry nitrous oxide system
   3. you will be doing engine modifications like camshafts
   4. you will be running high rpms
   5. you want to run e85 instead of gasoline
    
5. I'm going to run a turbo; should I use a rising rate fuel pressure regulator?
   No it is not necessary to change the fuel pressure regulator.  The ECU knows how much "boost" there is from the mass air meter readings/rpm and injects the correct amount of fuel.
    
6. Should I install Stage 2 before I make other modifications or at the same time?
   Install Stage 2 first if possible.  Stage 2 will run a stock car perfectly so there is no reason to wait to install it.  By installing it first and testing it you can know that your engine management is functioning correctly before you make other modifications.  Then when if you run into problems when you install a modification you will know where to look to find and solve your problem.
    
7. Does Stage 2 effect dealer diagnostic equipment?
    No.  Stage 2 is invisible to and communicates correctly with all dealer diagnostic equipment.
    
8. Will Stage 2 work on a  non-US market SVX?  On some non-US market SVX's the calibration of the atmospheric pressure sensor does not match our software and causes a check engine light to be displayed.  On other non-US market SVX's this problem has not been seen.  We unfortunately do  not have the information necessary to identify which non-US market SVX's are fully compatible and which are not.
    
9. What if the Stage 2 code is updated, will I have to buy it again?  The SVX Stage 2 code will continue to be developed and refined and future updates will be made available at a reduced cost.