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hi trev
i only swopped the ngk's because the denso was a two range colder
You should only need one grade colder and I would expect NGK to do as wide a range as Denso so it shouldn't be a problem.
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plug if im honest it was because alot of american drag racers used them too with good results
The majority of American Drag racers would use shit if one dumb ass fool claimed it was gold.
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..funny enough the car ran smoother,
Any NEW set of plugs could have had the same effect BUT that doesn't prove, that they will be any good when put under more load, as they are when running nitrous.
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but i will swop back if you think its best..
Many years ago I subjected 200 plugs of different brands to the most stringent testing and these were the results;
NGK came out top with most plugs performing well at the highest pressures
Champion came a close 2nd
Bosch (surprisingly) came 2nd to last with Denso being the outright worst, with most failing at very low pressures and NONE surviving to anywhere near as high as NGK
To be fair Denso 'MIGHT' have improved since then but the others could have done so as well and maintained their advantage, so I always stick to NGK.
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im running fuel 75, nitrous 150,
Do you have a bottle heater?
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ive just been out for a run dropping down to 50 F 100 N as you would expect it felt alot less dramatic but ran fine....
Was it running fine apart from the speckles on the 75 HP?
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ive never done a flow test and i do plan on upgrading the fuel pump
It would be a wise move to do both ASAP
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thanks
Always a pleasure Ted.
You got off lightly Ted.