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Just came back from the track. I lost 5 mph from the last time I ran the car. It is a supercharged 95 Cobra. Last time out (when the weather was cooler) I had trap speeds of 116. This time out I could get no better than 111. Only things I have changed since were Pressure Reg., Walbro 255lph pump, and a Fluidyne Radiator. The fuel was an upgrade from the 190lph. Just wondering if the Heat of the Day could cause the drop in MPH or maybe too much fuel now. Any help would be appreciated. Thanks to any responses.
David
 

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Yeah its normal to lose MPH an ET when the weather is hot I have lost .4 and 3 MPH when it gets around 90-95 degrees out. I just let it cool a little longer between runs and maybe throw some ice in the intake for a bit.
 
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