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Message: <blockquote data-quote="Hellion94" data-source="post: 688209" data-attributes="member: 8471">Re: In Response to Javi's Post....Haha, sorry I didn't mean it as an attack. Some people may spray it directly onto a turbo's compressor wheel, but it really isn't going to do a lot. Nitrous is under a ton of pressure, but it's a pretty thin gas when it escapes into the atmosphere, so it may help, but I would say that it's going to be pretty minimal. Modo - You are absolutely correct about the timing. It actually causes exactly what I was talking about. Chris, this should also answer your question:Ok so cylinder pressure is the amount of pressure that occurs during combustion. A static compression ratio is the amount that air is compressed in the cylinder, and is the base for cylinder pressure, but they aren't tied together directly. So, basically, a large explosion creates more pressure and force than a small explosion, correct? So the bigger explosion you can create, the more force you can transfer down onto the piston, and the more rapidly the air will exit the chamber. It's like setting off an M-80 in a stadium, or 20 lbs. of C4 in a porta-potty. So take that same theory and apply it to the turbine wheel of a turbo, the harder we can hit it, the faster it will accelerate, and the faster the turbo spools. What Modo said does that, but takes it a step further. Basically, instead of having that explosion happen in the combustion chamber, and then just feeding the byproduct to the turbo, we move that explosion into the exhaust by retarding the timing. Then the explosion happens even closer to the turbo, and even more force is applied. This is all the popping and banging you see Turbocharged racecars doing at the dragstrip. Also, final psi has nothing to do with spool time. Turbos will spin as fast as they can possibly spin, and accelerate at the fastest rate possible. The wastegate will then limit the pressure that goes to the turbine wheel by venting it to atmosphere, thus limiting the acceleration of the turbo, preventing it from generating any more boost.</blockquote>