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2nd Generation
stock lightning lower crank pulley or supercharger pulley
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<blockquote data-quote="throttle jockey" data-source="post: 11349830" data-attributes="member: 54243"><p>First off, before modding replace all fluids for piece of mind. Also, change the in-line fuel filter. This should be done every 2-3 oil changes. Its cheap and easy insurance. </p><p></p><p>Do not swap the upper pulley. In order to increase boost by swapping the upper pulley a smaller diameter pulley must be used which increases the likelihood of belt slip. The same can be achieved with a larger crank pulley.</p><p></p><p>4# or 6# lower pulleys are the norm. If reliability is of concern stick with a 4# lower. 6# pulleys are generally "safe" but they are more aggressive. </p><p></p><p>You'll need to swap plugs and retune for either a 4# or 6# pulley. You will also want to consider upgrading the MAF, especially since your truck is a '99 which came with a 80mm MAF from the factory. Use of a MAF extender such as the DiabloSport MAFia or an entirely new MAF such as the SCT BA2400 or BA2600 will ensure you don't "peg" the OEM MAF. "Pegging" the MAF results in blown motors and is possible with the use of 4# or 6# pulleys, particularly in the cool/cold winter months.</p><p></p><p>NGK TR-6 are great spark plugs which are inexpensive. The TR-6's will be in the desired heat range for either a 4# or 6# lower. Gap them to .034"-0.36".</p><p></p><p>Check to see if the intercooler recall has been performed on your truck. The '99-'00s where prone to leaking intercoolers. You might also want to clean your intercooler for piece of mind. Check out the "How-To" section for a thread to walk you through it step-by-step. </p><p></p><p>Invest in gauges also, vital but overlooked mods. I suggest a wideband air/fuel gauge, fuel pressure gauge and a vacuum/boost gauge. I'm also a big fan of the AeroForce Interceptor scan gauge due to its versatility.</p><p></p><p>Welcome to the addiction :thumbsup:</p></blockquote><p></p>
[QUOTE="throttle jockey, post: 11349830, member: 54243"] First off, before modding replace all fluids for piece of mind. Also, change the in-line fuel filter. This should be done every 2-3 oil changes. Its cheap and easy insurance. Do not swap the upper pulley. In order to increase boost by swapping the upper pulley a smaller diameter pulley must be used which increases the likelihood of belt slip. The same can be achieved with a larger crank pulley. 4# or 6# lower pulleys are the norm. If reliability is of concern stick with a 4# lower. 6# pulleys are generally "safe" but they are more aggressive. You'll need to swap plugs and retune for either a 4# or 6# pulley. You will also want to consider upgrading the MAF, especially since your truck is a '99 which came with a 80mm MAF from the factory. Use of a MAF extender such as the DiabloSport MAFia or an entirely new MAF such as the SCT BA2400 or BA2600 will ensure you don't "peg" the OEM MAF. "Pegging" the MAF results in blown motors and is possible with the use of 4# or 6# pulleys, particularly in the cool/cold winter months. NGK TR-6 are great spark plugs which are inexpensive. The TR-6's will be in the desired heat range for either a 4# or 6# lower. Gap them to .034"-0.36". Check to see if the intercooler recall has been performed on your truck. The '99-'00s where prone to leaking intercoolers. You might also want to clean your intercooler for piece of mind. Check out the "How-To" section for a thread to walk you through it step-by-step. Invest in gauges also, vital but overlooked mods. I suggest a wideband air/fuel gauge, fuel pressure gauge and a vacuum/boost gauge. I'm also a big fan of the AeroForce Interceptor scan gauge due to its versatility. Welcome to the addiction :thumbsup: [/QUOTE]
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2nd Generation
stock lightning lower crank pulley or supercharger pulley
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