400+ whp Supercharger Setup Advice
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Originally Posted by s2000Junky' timestamp='1300985123' post='20392654
Not sure about the reliability of the boost control thing, consider that you will need to decide when you want it to bleed off boost and then have one map on the ems tuned for that specifically, and another map tuned for no boost bleed. You can have a reliable tune, but if there is fluctuations with your BOV not bleeding boost at a consistent amount at a consistent time, your tune will be shit, this is what I would be concerned with. I’m not sure how consistent the BOV at bleeding boost would be in this way. It’s a novel idea, but I don't think very practical either. On a turbo set up, having two different boost maps can be done and makes sense and is done often. On an SC I say just let it fly. And unless you’re shooting for 500whp+ I wouldn’t spend the money on building the motor. I'd run factory comp on a stock motor up to 15psi and use water/meth injection to get the most power out of it at those moderate boost levels. You should make about 450whp reliably as a daily driver.
I agree that a BOV couldn't regulate pressure that well, but that's not really what a BOV was made to do. What about an ECU controlled solenoid that controlled a wastegate somewhere between the SC and TB? I'm not sure if any wastegates are designed to control intake air pressure, or if they even could, but they do a pretty good job of controlling exhaust pressure.
As far as an ecu controlled wastegate you may have a more reliable option there, its come up in conversation before and there are in fact a couple threads that touch on this so I would do a search and see what you can find, it hasn’t been a real interest to me so I haven’t pursued it, but I think with a little homework you could find what you need to make that work.
Yes 450whp is reliable on a stock block.
Keep in mind, on an SC, it builds boost relative to rpm unlike a turbo. Depending on how you drive, it can be much less stressful on the motor over the short and long run.
Water/methanol injection is another component when incorporated will add to your safety margin, wile at the same time should you wish, increase your power through a more aggressive allowed tune. E85 does a similar thing, however you pump it and not always as practical an option.
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IF you do indeed need to replace your motor or rebuild due to a problem, then it makes more sense. I'm going on the premise that your current motor is fine.
As far as an ecu controlled wastegate you may have a more reliable option there, its come up in conversation before and there are in fact a couple threads that touch on this so I would do a search and see what you can find, it hasn’t been a real interest to me so I haven’t pursued it, but I think with a little homework you could find what you need to make that work.
Yes 450whp is reliable on a stock block.
Keep in mind, on an SC, it builds boost relative to rpm unlike a turbo. Depending on how you drive, it can be much less stressful on the motor over the short and long run.
Water/methanol injection is another component when incorporated will add to your safety margin, wile at the same time should you wish, increase your power through a more aggressive allowed tune. E85 does a similar thing, however you pump it and not always as practical an option.
As far as an ecu controlled wastegate you may have a more reliable option there, its come up in conversation before and there are in fact a couple threads that touch on this so I would do a search and see what you can find, it hasn’t been a real interest to me so I haven’t pursued it, but I think with a little homework you could find what you need to make that work.
Yes 450whp is reliable on a stock block.
Keep in mind, on an SC, it builds boost relative to rpm unlike a turbo. Depending on how you drive, it can be much less stressful on the motor over the short and long run.
Water/methanol injection is another component when incorporated will add to your safety margin, wile at the same time should you wish, increase your power through a more aggressive allowed tune. E85 does a similar thing, however you pump it and not always as practical an option.
If I do go with a boost controlled supercharger setup, I will be building boost somewhere between a supercharger and turbo. Boost would come on faster than my current setup then peak earlier and taper like a turbo. I like the idea of that for normal driving. I also like the idea of the magic button. +50-80hp with the flip of a switch! YES!
I don't like the idea of adding another potential point of failure with meth injection. Plus the hassle of filling up with water or meth all the time and an extra water tank. I was tuned for E85 on my STi and loved it for awhile. There are E85 stations everywhere in Coloraod. But then a surprise cold front came in and I had to pump 9 gallons of ethanol into a bucket so I could put gasoline back in and get the car to start. I'm also moving back to Portland soon and it's not practical to run E85 in a daily there. Only one or two E85 stations within 25 miles of the city.
I just found an article talking about the SC setup I want to do. They do it on a Saleen Mustang. Sounds very possible...
http://www.musclemustangfastfords.co...all/index.html
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How many miles on your car? I want to do a blower with around 350whp but I'm scared of grenading my motor. What blower do you have? A Novi 1200 should meet your 400whp goal. I wouldn't even both with the boost cut idea.
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