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By PotatoCake · Posted
Yeh vibrant looks a bit overpriced, but thats the US market in general, they pay $50k for a gtst... -
By joshuaho96 · Posted
It's surprising you say this because talking to someone who headed Toyota's CARB certification efforts and was now working for Mercedes doing similar things he said he never had a case where he found that it was necessary to reduce ignition timing for that reason. Knock limits yes, but never because of in-cylinder emissions profile. I'm guessing between EGR and the number of TWCs modern cars stack in series it's not really a problem. I really doubt the NEO is that big a difference. You get what, EV6 injectors, coil on plug, a cold start valve that works off coolant temp instead of basically fixed time constant valve, and... I really can't think of anything else. Not like Toyota where they shipped first gen GDI in the 2JZ-FSE. Something I didn't realize is that Japan didn't revise their emissions standards for light duty passenger cars between 1978 and 2000. I'm guessing there's a bit of phase-in, but that explains why 2002 killed a bunch of JDM sports cars off all at once. FD3S, A80, S15, Z32, R34, Z15A GTO all died off for that reason. And explains how all these cars got away with no EGR or much of anything other than a TWC and charcoal canister for the longest time. -
100% agree. Best bet on an RB will be NEO, but even it will be a long way off. Emissions is one of the big reasons car manufacturers went to DBW and constantly variable cams. When cruising, open the throttle right up, but reduce dynamic compression so low, that it's basically an unrestricted air pump moving very little air.
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By funkymonkey · Posted
I’m hosting a bunch of execs in the McLaren box on Saturday. If you’re around I’ll come say hi, and see if I can sneak out some freebies. -
Yes. All of this. But even when you get the NOx as low as you can go on an RB, it will no doubt still be way too high. Same with CO and HCs. The tech and the tuning time just isn't there.
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