This is technical discussion. Far from arguing. You can't get a thread locked for technical discussion unless you get into name calling and whatever.
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Originally Posted by N0DIH Agreed, it might not be a major HP gain ("Buy now for an instant 100 hp gain!!!") but to keep things flowing proper with minimal issues, go as large as a N/A motor is for the boosted engine (a 300 CID boosted to 7.5 PSI is approx 450 CID airflow). Strictly by the numbers. |
I'm not saying a 454TB is necissarily a bad idea, just that it may not be worth the effort to buy & install. And you're right it's 450ci worth of air, but it's still packed into 300ci worth of space.
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So here's the big thing, should I make successful contact with someone who can make this chip happen, I will need to either have CallMeCrazy finish his compressor map, or I will have to build one of my own, just to see where boost will likely occur with the 4.9 liter engine so that fueling this thing wn't be the big issue that it is now.
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I can't go back and read this thread to see if this is what CallMeCrazy is doing, but a regular compressor map just shows the compressor efficency of the turbo. It's mostly for sizing purposes to get the right turbo for your engine airflow and boost requirements. If you use the efficency numbers and calculate out how much more air is actually going into your engine you can have an incredibly rough guess on how much fuel needs to be injected when. But you'll still be guessing for the engines true volumetric efficency, when the turbo will spool, how much boost it will produce at what RPM, along with other variables. So you definately still need a good amount of leeway for fine tuning. Have to make sure you have that room to tune it with whatever fuel management you go with.