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Discussion Starter #1
Im gonna be spraying about 75-80 shot on my engine.

Im currently using NGK R5671A-7 plugs, 7 heat range, but am switching to bk7re's. Will 1 range colder be ok or do yall recommend 2 steps?

I may be stepping up to 100hp if things go well and the bottom end holds lol
 

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Brokedick Millionaire
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Stay with what you have, goto -8's for 100 shot and pull enough timing.

The shorter reach of the R5671's means less likely the ground strap will melt.
 

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Discussion Starter #3
Ight. Ty. Im pulling 3 degrees for 80 ish. Im running conservative timing already, planned the engine for spray. 14 degrees base with a y8 head on a z6.
 

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Brokedick Millionaire
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better pull more depending on the tune in the ECU.

I'd pull at least 4 degrees from base to start.

Are you wet or dry?
 

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Discussion Starter #5 (Edited)
Dry. Fuel is being added by the s300, and timing is being handled by it also. The spray will be dyno tuned.

Edit: should I pull the timimng from the dizzy? With the the s300 nitrous control, I can just enter the amount i want out. I imagine it pulls it out overall
 
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