How much will it gain? X-charger 42lb and riva Stage 1 and was thinking about stage 1 tune 8350rpm
About 40hp. Add the fizzle intercooler, however, and you’ll be nearing 270-280.
Hard to say exact HP numbers, but it’ll be a night and day difference
what about the same setup only with 50lb injectors and 8650 rpms tune? with fizzle F1000
You’ll want retainers for those RPMs. The 50s won’t be necessary unless you go et137 wheel