Reply to thread

Message: [QUOTE="Wayne, post: 448475, member: 863"] There seems to be a trend of running comparably huge injectors with non-huge turbo(s) to achieve peak power, but by doing this, you either run nitrous or black out the sky. This mentality works good at sled pulls and drag racing, where you cram in more, and more fuel until you stop gaining power because of limited turbo size, or finish off the remainig fuel with the bottle. If you run larger than recommended injectors I hope you have a wastegate (YES, I SAID WASTEGATE) to keep back pressure in check. be prepared to deal with excessive heat, and all that goes with it. for the 72, I'm sure anything over 60 hp nozzles is overdoing it unless you are cutting back pulse width. The best thing I can recommend is to get feedback from anyone who has tried these setups. Best rule of thumb for current proven setups & widely available tuning I can recommend on a 6.4 is something like this: Guys that tow heavy on a regular basis: stock size injectors, use more turbo if you want more power. Efficient setups run very cool, and can be as strong as 740ish rwhp. -more than enough for a guy who depends on his truck for work day-in, and day-out. There will probably be more power on tap than your oil cooler, and possibly your radiator can keep up with running hard at these power levels. Daily driver with occasional towing: Keep it conservative, such as 60 hp nozzles with tow-powers, 85's with high powers, 110's with max powers. If you run turbos beyond the max power compound size, I'm guessing you don't tow much anyway, so whatever Weekend warrior with occasional track use: Go ahead with a bit larger injector than the daily driver crowd, but cut the pulse width back when you don't want to watch your EGT's like a hawk. There always seem to be exceptions to the rule, but I'll call the above list a beginner's guideline. Just make sure you have enough fuel supply and injection pump to maintain desired rail pressure, or power will fall off without spray to compensate. [/QUOTE]