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Intercooler and Spark plugs Q

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Old Jun 3, 2007 | 10:18 PM
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javierh8's Avatar
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Default Intercooler and Spark plugs Q
I just upgraded my early 99 A4 1.8T to a KO4 and an Unitronic chip. Is it necesary to upgrade to a front mounted intercooler, and what kind of spark plugs should I run?
 
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Old Jun 3, 2007 | 10:40 PM
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Default RE: Intercooler and Spark plugs Q
an upgraded ic is need when you are chipped, more so if you add a larger turbo. You can just get a upgraded smic from tyrolsport here.

Spark Plugs
.028" gap:

NGK BKR7E

Autolite 3922

Denso Iridium IK22

any of those three will do.

 
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Old Jun 3, 2007 | 11:50 PM
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Default RE: Intercooler and Spark plugs Q
with just a giac chip, n75, and exhaust should I have one step colder plugs?
and off subject but if my n75 valve is off a vw would it make have weird boost or are they the same?
thanks!
 
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Old Jun 3, 2007 | 11:54 PM
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cincyTT's Avatar
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Default RE: Intercooler and Spark plugs Q
with a chip you should go one heat range colder, but dont have to. just make sure the gap is at .028.Your n75 is fine.
 
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Old Jun 3, 2007 | 11:55 PM
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Default RE: Intercooler and Spark plugs Q
there are alot of different n75 valves and if its not the right one it can do wierd things you should get a n75h
 
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Old Jun 3, 2007 | 11:58 PM
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Default RE: Intercooler and Spark plugs Q
yeah i know. one of my buddies gave it to me, and told me that is was for a vw. Do you think that is why i might be losing boost thoughtout the powerband?
 
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Old Jun 4, 2007 | 12:01 AM
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Default RE: Intercooler and Spark plugs Q
its possible but not likely they all work pretty close to the same
 
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Old Jun 4, 2007 | 12:04 AM
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Default RE: Intercooler and Spark plugs Q
So you think I should prolly get a new one then? It is brown. What color is the h, and what makes it different from the j?
 
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Old Jun 4, 2007 | 12:24 AM
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Default RE: Intercooler and Spark plugs Q
they are all brown you can check the part number and see what you have the H is better on the 99.5 and newer and the J is better on the later cars
 
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Old Jun 4, 2007 | 12:28 AM
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Default RE: Intercooler and Spark plugs Q
i have a 98
 
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