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07-26-2009, 03:27 AM | #23 |
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I agree with what you're saying, but it seems the RPI exhausts are not quite straight pipes...no?
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07-26-2009, 04:17 PM | #24 |
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Their 1st proto type was straight pipes, their final design has a small muffler put in. I think the dyno showing their gains was the original without a muffler, not 100% sure.
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07-26-2009, 05:28 PM | #25 | |
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The RPI GT exhaust has two small mufflers and the gains are from that same muffler...loss hp was from straight pipes...
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07-29-2009, 08:06 PM | #26 |
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I have not dyno'd it. But isn't it safe to say that if you had a tune on stock exhaust and you go to straight pipes WITHOUT retune that this could have been the reason for the decreased power?
The computer was specifically tuned for when you had the stock exhaust... I wonder if thes same loss would have happened on a bone stock "non-tuned" car. I also want to get the ESS and have it dyno'd. Although I don't have a baseline I'll still know what I'm doing with the mufflers in place and can compare against others. Btw, here are some pics of the install. Excuse the Blackberry camera. http://www.zpost.com/forums/showthread.php?t=286853 |
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