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Discussion Starter #1
Hi, I would appreciate any advice from the experts here. I have modde my 33 GTR to about 600 hp using HKS 2540s etc. High boost is 1.5 bar. The tuner has installed HKS S45 plugs and it seems fine. But the local HKS guy advised that S50 are needed. Otherwise I could fry my pistons on high boost! FYI, I run the car at 1.2 bar everyday and on track day I intend to run full boost.
 

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PLUGS

Try e-mailing hks europe they should be able to tell you what heat range you need.I would say it would be the s50 plugs as i was running s45 in my car on 0.9bar.:smokin:
 

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plugs

I would use s50
Gary
 

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Discussion Starter #5
I was running my stock turbos at 1.12 bar for about 10 mths and I used S45 with no problem at all.
 
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