Dump tube on race day question?
11-08-2008, 01:54 PM
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Dump tube on race day question?
My car was tuned with the dumptube port closed, would it hurt or help my engine opening it up on race day at the drag strip? thanks for any advice! 
11-10-2008, 05:25 PM
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Re: Dump tube on race day question? (accord99power)
Originally Posted by accord99power
My car was tuned with the dumptube port closed, would it hurt or help my engine opening it up on race day at the drag strip? thanks for any advice!
Originally Posted by accord99power
yes my cut out sorry, it doesnt recirculate. that was the word i was lookin for. 
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11-11-2008, 05:28 PM
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Re: Dump tube on race day question? (LastGenEK)
If the dump tube was recirculated back into the exhaust pipe, you will end up with less restriction in the exhaust. Since the Honda speed-density system can't sense that, you will likely start burning leaner because it flows better but no extra fuel is added.
Lean AFR's + stress = boom. You should have asked to tune it with the dump open too. Any EMS worth its salt now has dual-map capabilities. Or with crome, you use a 2timer or a 16timer.
Lean AFR's + stress = boom. You should have asked to tune it with the dump open too. Any EMS worth its salt now has dual-map capabilities. Or with crome, you use a 2timer or a 16timer.
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