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Just wondering because I don't want to pop a head gasket with the increased cylinder pressure. So far I've started spraying in 3rd and tach'd it up to around 6000rpm's and shifted to 4th and held it for a little bit and let off of it. I'd like to try it out next year at the drag strip in 2nd gear and use it untill I cross the finish line.

 
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You can run it up to red line if you want, just don't hit the rev limiter while spraying.

 
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No need to worry there, I've got a window switch on it. It cuts it off at 6200 rpm's. Has anyone experienced any problems with a 50 shot on here before?

 
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I've been running a 50 shot for about 6 months (8 or 9 refills) with no problems, yet.

 
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Your only supposed to use it for 15 seconds at a time. Shot size doesn't matter. Any longer and you will burn up your solenoids.

I run a 75 shot from 4000 RPMs in first til the end of 4th gear at the track with no problems

 
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Are you running stock internals with the 75 shot?

 
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i sprayed alot on my d17 50 shot then 75 and my then sold it. My motor is still good and no problems as of yet. And stock internals