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BPR9's too cold?

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DSMULATOR

15+ Year Contributor
188
0
Sep 19, 2006
B Ville, Rhode Island
I know everyone loves the BPR7's and I've run those for a while now. I just have a box of 9's lying around and want to know if I can use them. I've got the 7's gapped down to like 22 because I'm running like 22-23 psi and now I'm about to install my meth injection kit and turn up the boost some more...any thoughts? Its a summer car only so start ups aren't an issue
 
The only bad thing that would happen is that the plugs would foul. Bring your spare set (or a file to clean them off some) with you until you figure out if you like them or not.

I love colder plugs. I feel they've saved my a$$ in overboost situations more than a few times.
 
Looking at your mod list, they might be ok.... But I feel that they will probably foul out. The only way to find out, is to put them in.
I use a lighter and wire brush to clean my fouled out plugs, FYI. A file also works, as mentioned.
 
This could be a problem then because, especially in wet conditions, I'm already fouling 7s. I have it tuned pretty rich, 10 AFR at WOT because of a knock issue, but I wonder if its some phantom knock because I know plenty of people running 11s and 12s for AFR with no problems...
 
Looking at your mod list, they might be ok.... But I feel that they will probably foul out. The only way to find out, is to put them in.
I use a lighter and wire brush to clean my fouled out plugs, FYI. A file also works, as mentioned.

No offense but your nowhere close to using this cold of a plug. Put them in your snowmobile. If anything you'll have a studdering startup. Yes, the colder the plugs, the lower the knock but sometimes it's not needed.
 
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