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Discussion Starter #1
Yes, I cannot resist to ask about the SRT-4 plug replacement.

Here is the correct number that is cross-over from the Champion Copper Plus.

Normal range: DENSO ITV16
Part #5338

2 range colder: DENSO ITV20
Part #5339

Hype: they claim you will see some gains. Hmm..when talking about the plug issues with PVO rep, they admitted that copper maybe the best plug of choice. The better over Champion would be the Copper V-groove from NGK.

I have test out the Iridium first them order some V-Groove NGK to see the difference.
 

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Re: Talk to the Denso today about the Iridium Spark Plugs-SR

hemidakota said:
Yes, I cannot resist to ask about the SRT-4 plug replacement.

Here is the correct number that is cross-over from the Champion Copper Plus.

Normal range: DENSO ITV16
Part #5338

2 range colder: DENSO ITV20
Part #5339

Hype: they claim you will see some gains. Hmm..when talking about the plug issues with PVO rep, they admitted that copper maybe the best plug of choice. The better over Champion would be the Copper V-groove from NGK.

I have test out the Iridium first them order some V-Groove NGK to see the difference.
So you've tried out the Denso ITV20, and they worked fine?..... because i'd be interested in getting a set of those! :twisted:
 

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I dont think you will notice a big difference in swapping out the plugs now. YOu might get a smoother idle if anything. But if you rnot experiencing missing at high speed etc, I dont htink you will notice any difference.
 
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