IK27's will take you from 1.4 through to 1.8 bar, possibly evento 2 bar as the 27's are the ones HKS rebadge and call S45i and they according to someone up on high will be OK for 2 bar.
Best Price for HKS S45i Iridium Plugs
- Thread starter stevepudney
- Start date
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From what I remember reading you need to get a Grade colder plug for every 70 to 100bhp increase :?.
So...
IK22 ( Heat Range 7 ) for 220 bhp - Standard Boost
Ik24 ( Heat Range 8 ) for 300bhp - 1 BAR
IK27 ( Heat Rannge 9) for 400 bhp
... and so on depending on your BHP level.
Not 100% sure on this though
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From what I remember reading you need to get a Grade colder plug for every 70 to 100bhp increase :?.
So...
IK22 ( Heat Range 7 ) for 220 bhp - Standard Boost
Ik24 ( Heat Range 8 ) for 300bhp - 1 BAR
IK27 ( Heat Rannge 9) for 400 bhp
... and so on depending on your BHP level.
Not 100% sure on this though
....
If it were me, I'd stick with 7's, but then again I ain't no expert.
I think once you reach 300bhp (which is 80 bhp over standard) then you start using the 1 Grade colder plug. Then again once you reach round about 400bhp you get 2 Grades colder than standard.
That's just my opinion though.
If it were me, I'd stick with 7's, but then again I ain't no expert
.I think once you reach 300bhp (which is 80 bhp over standard) then you start using the 1 Grade colder plug. Then again once you reach round about 400bhp you get 2 Grades colder than standard.
That's just my opinion though
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I think you would go up to IK31 for over the 500 mark.RishiGTiR said: