Another S/C'd member worried about his AFR

[Loren]

Kuro, bumping the boost up to 8psi is where you start having the real FI headaches. I wouldn't recommend being the guinea pig for this unless you have the means to really monitor things AND deal with everything that's likely to come up, like needing more fuel, needing less ignition advance, and possibly even the need for intercooling or water injection to reduce the charge temperature.

Keep in mind that Blitz is a big company that did their homework, and did their R&D and testing in-house before putting a product on the market. NST is not at the same level, and they're asking you to help with their development at YOUR own risk.

As to the power question, the increase in power is going to be somewhat proportional to the increase in pressure... with 14.7 being the basis, no zero. So, if you've got 4 psi of boost, that's a 27% increase in air. You'll lose some of that due to having to compress the charge in the intake piping and manifold, etc, so you probably don't see a full 27% increase in air introduced to the cylinder. So, maybe 20-25%? Which is about what people are seeing on the dyno from the Blitz kit, right?

Bump that up by 2 psi and you're at 6psi, or 40.8% over atmospheric pressure. So, you could see as much as 40% more power, but realistically, 30-35%.

Numbers are a funny thing. Much depends on whether you want to be optimistic or pessimistic in your estimates.

There's a reason why the Blitz kit is limited in the amount of boost it delivers. If it was EASY to reliably provide more boost and more power, they'd do it!