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Old 09-07-2022, 03:19 PM   #52
Spektyr
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Join Date: May 2021
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Quote:
Originally Posted by Blighty View Post
So when I see someone post a number like 194whp for the new one, I go yeah sure that's possible.
If this is a problem for you, you're not paying attention. People aren't saying "initial dyno too low - obviously fake" and hitting submit.

What people are saying is that it's suspicious that the initial dyno is so low, and then when you add the with-custom-header dyno looks exactly the same, just bumped up over double what you'd expect from really good headers, it's difficult to believe.

Headers play a quantifiable role in WHERE an engine makes its power/torque. If you change them you should see a change in the power/torque curve. It is very weird to see a uniform change across the entire curve.

So the low "before" dyno isn't suspicious because it's low, it's suspicious because it's identical AND lower than the "after" dyno. It looks like it was deliberately lowered to make the after dyno look better.

Could a stock car be making those numbers? Absolutely. They're all built on the same line, but they're by no means identical.

Could a stock car see a 10% increase in peak horsepower with aftermarket headers, no tune, and no change to the shape of the power/torque curve? Extremely unlikely. Profoundly unlikely.

The low initial dyno is a red flag. It's not the red flag.
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