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dudemaaan · 08-21-2009, 01:21 PM

If power is under 400 with no ignition amp I would run 9's all around. B9egvs all around.

If running an ignition amp I would run 10's all around regardless of power output. 9's are just too hot for amps. b10egvs (non resistor plug) and br10eix's(resistor plug) are both decent plugs at a low price. The HKS says not to run non resistor plugs with the twin power. Some people had trouble with breakup and others have had the TP boxes pop because of the non resistor plugs.

I personally run a TP with stock coils and used to run the b9egv's, they ran good and I had no issues with them except they burned up too quickly.

I have since switched to greddy race plugs which are rebadged NGK R7420's, at a lower price. The greddy plug part # is 13000150. They run between $29-$35 each ($116- $120 a set) These are Non resistor plugs, so safe to run with the TP.

These plugs made my car idle smoother, gave a more complete burn, and are supposed to last 20 times longer then the cheaper plugs. In the long run this is the plug to run and will actually cost less.

I'm running 23psi on a t70 and 575 cc of water preturbo, with these plugs, stock coils and a TP I have no breakup.

08-21-2009, 01:21 PM	#11
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	If power is under 400 with no ignition amp I would run 9's all around. B9egvs all around. If running an ignition amp I would run 10's all around regardless of power output. 9's are just too hot for amps. b10egvs (non resistor plug) and br10eix's(resistor plug) are both decent plugs at a low price. The HKS says not to run non resistor plugs with the twin power. Some people had trouble with breakup and others have had the TP boxes pop because of the non resistor plugs. I personally run a TP with stock coils and used to run the b9egv's, they ran good and I had no issues with them except they burned up too quickly. I have since switched to greddy race plugs which are rebadged NGK R7420's, at a lower price. The greddy plug part # is 13000150. They run between $29-$35 each ($116- $120 a set) These are Non resistor plugs, so safe to run with the TP. These plugs made my car idle smoother, gave a more complete burn, and are supposed to last 20 times longer then the cheaper plugs. In the long run this is the plug to run and will actually cost less. I'm running 23psi on a t70 and 575 cc of water preturbo, with these plugs, stock coils and a TP I have no breakup.