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7531

Be ready to beat your head into the wall for a while. Everybody tells me I don't need a progressive, and that you can calm it down enough with the 7531. I can't get my car to leave on any more than 40% of an .082 jet in the plate even pulling 30 degrees of total timing. So I say you will have to have both.
 

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I have both but only use the progressive to tune. MSD told me DO NOT USE TRACTION CONTROL with nitrous. I would like some input from those who have used traction control with NOS.
 

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You mean

You mean Traction Control like a Davis box? If somebody at MSD told you that they're a FOOL! Tons of Outlaw nitrous cars use them. Besides, it does the same thing as a 7531...it pulls timing.
 

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I think what Jon is referring to is the slew feature on the 7531 with nitrous. Slew drops out cylinders when the RPM climbs faster than the preset curve. Dropping cylinders (not firing them) could cause problems by unburned fuel getting lit the next stroke and lifting a ring land. The Davis is fine with nitrous, it just retards timing until the sensor is satisfied with the wheel speed.
 

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I think what Jon is referring to is the slew feature on the 7531 with nitrous. Slew drops out cylinders when the RPM climbs faster than the preset curve. Dropping cylinders (not firing them) could cause problems by unburned fuel getting lit the next stroke and lifting a ring land. The Davis is fine with nitrous, it just retards timing until the sensor is satisfied with the wheel speed.
Here we go with the traction control thing again...
The Davis thing is fine, but most of us Broke Dick MutherPhuckers cant afford one..
If you hurt your shit using the TC in the 7531 box.. YOU GOT OTHER ISSUES, believe me...;)
TC DAWG
 

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Slew rate

sorry i meant slew

Yeah, killing alternating cylinders while still pumping them full of nitrous probably wouldn't be a good idea. Unless you WANT your cylinder heads to leave a witness mark on the underside of your hood.
 
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