So what exactly does going to a colder plug after chipping do for you? I know it was recommended and I did it on my 1.8 TT but is it needed anytime you chip? Thanks.

 

it all depends. if your just chipped, don't bother. but if you have a exhaust and or intake it will help in the higher rpm's. but, the difference is minimal. but if you were to use race fuel with the chip exhaust and intake it would make a larger difference. it all depends on what your doing and going for. but runing the stock plugs is a safe bet for most. but a colder plug won't hurt anything either.

 

This is easier than typing..... From NGK themselves

A spark plug's heat range has no relationship to the actual voltage transferred through the spark plug. Rather, the heat range is a measure of the spark plug's ability to remove heat from the combustion chamber. The heat range measurement is determined by several factors; the length of the ceramic center insulator nose and its' ability to absorb and transfer combustion heat, the material composition of the insulator and center electrode material.
Heat rating and heat flow path of NGK Spark Plugs[align=center] [/align]The insulator nose length is the distance from the firing tip of the insulator to the point where insulator meets the metal shell. Since the insulator tip is the hottest part of the spark plug, the tip temperature is a primary factor in pre-ignition and fouling. Whether the spark plugs are fitted in a lawnmower, boat, or a race car, the spark plug tip temperature must remain between 500C-850°C. If the tip temperature is lower than 500°C, the insulator area surrounding the center electrode will not be hot enough to burn off carbon and combustion chamber deposits. These accumulated deposits can result in spark plug fouling leading to misfire. If the tip temperature is higher than 850°C the spark plug will overheat which may cause the ceramic around the center electrode to blister and the electrodes to melt. This may lead to pre-ignition/detonation and expensive engine damage. In identical spark plug types, the difference from one heat range to the next is the ability to remove approximately 70°C to 100°C from the combustion chamber. A projected style spark plug firing tip temperature is increased by 10°C to 20°C.

 

glad to hear that opinion, because I got chipped about a week ago (car seems faster now that it has had several runs to adapt, maybe that just me) and I still havent put in the cold plugs (though I have them and gapped them), or gotten my state inspection done [:@]Things that cost money get put low on the list, haha.

 

sorry, all the spark plug info you can handle

 

Thats alot of info, I will have to read it all and see if I can determine when to change,thanks guys. Is there a guide to determine when to change heat ranges.

 

basically, you add more heat with the increase in power (more air + more fuel = hotter and bigger boom). So the more power with a chip and other bolt ons will increase heat in the combustion chamber and the spark plugs need to be changed.

 

So Im assuming then with just a chip Im good on my plugs. I will have to see how things go when I can get a TBE or downpipe put on.

 

I never had a problem running stock heat range with a chip. Just see plenty of people running them with chips.

 

Things seem to be fine with mine too so far. Im just waitnig for all these companies to come out with good things for the new TT like a good exhaust that doesnt cost 2 grand, and others to come out with DVs and waiting to see if the boost guage kit will fit the new TT too. I think with the chip and a good TBE and MBC this new car should be just as fast or faster than my 02 TT with the new turbo FMIC, injectors, etcand all.