| Author | Message | ||
     Thepup |
I've been reading up on turbochargers,just wondering,if you keep the boost low would a techlusion help provide enough fuel?I know there are kits but there are ways to get some small turbos really cheap so I was just pondering a project,any thoughts would be appreciated | ||
| M1combat |
Well... If you do the math to figure out your cylinder fill with your intended level of boost you could probably look in a service manual and figure out how much fuel the injectors are capable of flowing. At that point, see if the Techlusion box is capable of adding enough ms to the short time of the injectors and there you would have it. As I recall you don't want your injectors running at more than 80% of their capacity because they will allow the fuel to atomize better (don't quote me on that though). | ||
| Joele |
That's pretty much spot on - another thing to consider, and I don't know much about this Techlusion box, but tuning for forced induction requires numerous points of adjustment along the fuel map and it generally works out better if the ECM can dynamically take boost in to account rather than trying to program a static map. | ||
| Martin |
You could fit bigger injectors but then you would need to take fuel away at lower revs which a techlusion cannot do. Sounds like a fully programmeable unit is what you need. BTW If you find out what the standard flow rate of '03 9 injectors is and at what pressure that is measured I'd be grateful! If you can tell me what the Bosch equivalent part number is I'd be delirious! | ||
| Trenchtractor |
Jo's got it... there are gonna be a whole bunch of issues with this idea.... How much boost you have will change depending on how much you are giving it... This is how turbo's work. My brother has a pretty hard worked turbo car, and yet he can drive it all day 'off-boost' if he so desires. Now, if you were talking a supercharger (screw), or a belt driven turbine, then you could rely on the boost increasing consistantly as the rev's increase... Then you can start worrying about the injectors and the TFi being able to handle the boost. | ||
| M1combat |
What about a turbo that provides 3# boost at idle and a blow off valve that doesn't let it get any higher than 3# through the rev range? I've never worked with turbo's so that has the potential of being a really dumb statement  . | ||
| M1combat |
I suppose a modified cam and cam cover with a belt running off of a cam would be a better situation, but I think someone was already working on something like that and decided there wasn't enough interest... | ||
| Thepup |
M1,thats what I was thinking just keep the boost low maybe 5# at the most.I seen a website about a Harley with a turbo and everything was stock,even had the stock carb still. | ||
| Joele |
What about a turbo that provides 3# boost at idle and a blow off valve that doesn't let it get any higher than 3# through the rev range? I've never worked with turbo's so that has the potential of being a really dumb statement Blow off valves don't regulate boost, you are thinking of a waste gate - blow off valves allow the turbine to spin "free wheel" when you take your foot off of the gas - otherwise the turbine would stall from the back pressure of the throttle body being shut. Which leads me to answer your question - you can't have boost at idle because the turbo does not get spooled up until you press the accelerator and cause the exhaust gas to build up pressure, which spins the turbine - which forces more air through the open throttle body. |
