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Author Topic: Plugs with meth  (Read 668 times)

Offline Allen fong

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Plugs with meth
« on: September 22, 2012, 09:19:44 am »
Ok so I switched to a colder plug while I was running 26
psi and it seemed to be all good but now that I have meth and running more timing is it advisable to go back down a heat range? The only negative I'm experiencing is poorer gas mileage. But that can be so many things

Kevin what plugs are you running?
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Offline kevin derhouson

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Re: Plugs with meth
« Reply #1 on: September 22, 2012, 09:29:35 am »
when i started upping the boost a bit on the 16g i went to the bpr7es plugs, keep using them when i added meth, my fuel economy improved a bit when i added water/meth into the mix for some reason (probably the rg tune being more dialed in then it had been previously)
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Offline Jordan Kruger

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Re: Plugs with meth
« Reply #2 on: September 22, 2012, 11:00:48 am »
Go with BR7ES     They are cool enough, and dont have a protruding electrode.   Less chance of blowout.
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Offline kevin derhouson

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Re: Plugs with meth
« Reply #3 on: September 22, 2012, 12:32:57 pm »
even better :)
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Offline Matt Vangaalen

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Re: Plugs with meth
« Reply #4 on: September 22, 2012, 12:53:41 pm »
Here is a good read about protruding plugs. http://www.dsmtuners.com/forums/tuning-engine-management/438401-swapped-bpr7es-br7es-ended-spark-blow-out.html Road Race sold me the BPR7ES and have been working great for me.
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Offline Allen fong

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Re: Plugs with meth
« Reply #5 on: September 22, 2012, 04:33:33 pm »
thanks guys ;D
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1993 1G AWD

SOLD:1998 Talon AWD E316G @ 25 psi, EVO 8 ECU with, HKS 272/272 cams, Walbro 255 + rewire, ACT 2100 with street disk, 3" exhaust no cat, Aeromotive FP regulator, EVO 3 Throttle Body, EVO 3 intake mani, 1000cc inj, GM 3bar map, PR FMIC, Aem Truboost, Aem Wideband, Devils Own Meth on progressive controller.

Offline Lowell Foo

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Re: Plugs with meth
« Reply #6 on: September 23, 2012, 10:54:39 am »
BPR7ES in my cars, and Kevin's car just made 433whp on stock coils with those plugs, which is about the limit of the non CDI ignition. 
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Offline Zach Holt

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Re: Plugs with meth
« Reply #7 on: September 23, 2012, 12:12:30 pm »
BPR7ES with a stock coilpack and some aftermarket plug wires with meth my talon made 500awhp.

these cars love those plugs. if it aint broke dont fix it :P
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Offline John Hartman

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Re: Plugs with meth
« Reply #8 on: September 23, 2012, 07:26:07 pm »
agreed, BPR7ES.  I have run -8 plugs, but it did idle a bit poorer at longer lights etc.  I didn't really notice any better knock improvement out of them either.
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Offline Allen fong

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Re: Plugs with meth
« Reply #9 on: September 23, 2012, 11:15:01 pm »
and as for gap I'm at .028 i've heard some people going smaller?
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1993 1G AWD

SOLD:1998 Talon AWD E316G @ 25 psi, EVO 8 ECU with, HKS 272/272 cams, Walbro 255 + rewire, ACT 2100 with street disk, 3" exhaust no cat, Aeromotive FP regulator, EVO 3 Throttle Body, EVO 3 intake mani, 1000cc inj, GM 3bar map, PR FMIC, Aem Truboost, Aem Wideband, Devils Own Meth on progressive controller.

Offline KevinBuckham

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Re: Plugs with meth
« Reply #10 on: September 24, 2012, 09:51:50 am »
I've heard of people reducing the gap a fair bit to help with misfire with meth injection.  It seems they are still able to light off the mixture just fine with the reduced gap, but I personally haven't tried it.  It seems they run down to about 0.18 gap from 0.28. 

I wouldn't be surprised if idle gets a bit worse with a reduced gap (more misfires), but since I haven't tried it I'm not really sure.  If I had more time on the dyno I'd try 100% meth and a smaller plug gap, but I'm happy for now.
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