But what about the boost bypass valve (thingy). It limits the boost to 12lbs regardless of the size of the pulley. Going to a smaller pulley will only get you to the 12lbs sooner, not give you any more. Unless you are offering some sort of computer upgrade, your smaller pulley WILL NOT give us more boost. It will merely get us to max boost sooner. And plugging the bypass hose IS NOT the answer, as that is merely the easy way out and could possibly damage the engine. I would like to hear your solution to this.
Posts by XeroState
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Exactly. Now this isn't the safest way to gain boost, but it works. And for you SFPH, if you really knew our engines, you would know about the boost bypass valve. Now how does your pulley give us more boost, when the valve DOESN'T allow for any more than 12 as it bleeds out any extra (as our STOCK SC produces 14.5psi above 4500rpms...redline owners have seen this). Please, I'd like to hear your solution...and it better not be "plug it" as that gives us the 2 lbs that your smaller pulley gives us.CoBIZZLE said:
As am I. This seems to be a sort of "quick fix" that doesn't solve anything we can't do for free. And the fact that here on this forum, and on the redline forum, they ignore the question of the boost bypass valve makes me wonder if it works at all. They clam they have 4 redlines in texas with them, but who is to say that they haven't plugged the bypass and gained nothing from the pulley. Guess only time will tell.
No kidding. Blowing hot air into the engine will kill power..considering dyno's don't have blowing air on them (other than fans, which don't work like real air). I'd still like to hear from SFPH tho about this, as they seem to be ignoring the question on the redline forum, which is why I posted it here too.
If I were to upgrade my SC, I'd go with Psi-Fi's "piggyback" system. It re-tunes the computer, has new injectors so more fuels goes into the system so it doesn't run EXTREMELY lean with the extra boost, and a new pulley. And it has been testing for about 2 months now I believe. Tonight they are having a public showing of it and demonstration (I live like 5 hrs away by plane tho 
). I would trust that set-up much more than a simple pulley swap as it seems to me they have done no research into the engine and the problems that may occur by using a smaller pulley (if they can get anything to happen in the first place).
). I would trust that set-up much more than a simple pulley swap as it seems to me they have done no research into the engine and the problems that may occur by using a smaller pulley (if they can get anything to happen in the first place).I have no idea what their website is. www.psi-fi.com maybe? I just read the www.redlineforums.com forums. Granted the info may be a little out to lunch at times, but occasionally you get some decent info.
If this is true (which we all assume is), then please tell me how you are gaining the extra boost in the cars in Texas? I am not saying that your pulley will not produce more boost, I am just questioning whether this boost will arrive in the engine or not. If they have merely plugged the boost bypass, please just tell us this.SFPH said:
You seem to be dancing around the question (I am not trying to be an ass, but merely voicing my opinion) of how you can claim this-
WITHOUT a dyno sheet or tuning the ECU to allow more boost. If these "couple of people" are seeing the gain in boost, maybe their boost gauge is reading it before it reaches the bypass which bleeds off excess amounts of boost. Please do not claim that your pulley will give us extra boost without proof, merely state that you have a smaller pulley which MAY or may not give boost without other modifications and they are currently testing this pulley and will have a dyno sheet soon. Customer relations (not that yours is bad, just your saying the wrong things) is very important, especially when most of us can't talk to you guys face to face.SFPH said:
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