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But see we have no way of tuning our ecu's unless we go standalone of those new programs that are coming out. So increasing boost isn't the best way to make power on our cars. But if you were to tune your car on 25 psi im sure you could get away with limited knock. Although I can't see much power being made on 25 psi since you'd have to retard more timing for the added knock you will be getting on pump gas and that high of boost
I think in most cases you are right on our cars. My case is a little different, since I am running the S3 kit and the turbo is not blowing hot air at 27psi I went that route. I am not a big fan of fooling the stock PCM with a piggy back fuel computer, so I run higher boost to lean out my tune slightly. I have not reduced timing at all by doing this. I still see 35 degress of timing at the top of third with 0KR and 27 psi in HOM. I also do not need to run race gas, since I tuned the car on meth to hold HOM. So it works for me as far as increasing power and still keeping things in check. My EGT's are also where they should be. The difference in the car is absolutly amazing compared to the stock S3 kit. I have not dynoed the car, but I have been using a good friend of mines car as a way to judge power. I used to lose by one car and now I pull him by four, so I believe the power has been increased by a good amount. The butt dyno is also telling me it has. That along with the lose of traction in third until 80mph. I am just waiting myself for the ability to flash my PCM. It would be better to run a custom tune then what I am doing now, but until then it works.
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That's the argument right now. People are saying that more power can be made on higher boost levels with lower timing than vice versa. Mainly on pump gas and mainly on a larger turbo (such as a 50trim or 35r) that needs more boost to get rolling anyways.
Both are really nice. I think that is why meth injection is so popular with the big turbo guys. Like you said you don't really start seeing the ture potental of a big turbo until you get in the 28psi and up range. With meth you can running higher boost and usually keep timing up in the process. I know when I get back into an EVO I will be heading in that direction.
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