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Old 10-04-2011, 03:16 PM   #21
Dgc333
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Ferrari and Porsche are using direct injection on there new engines and making a lot more power than the predecessors. So saying direct injection is not good for power is rubbish.

Just like when engines moved to EFI everyone screamed it was no good for power. It will just take time for the aftermarket to figure it out.
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Old 10-04-2011, 03:20 PM   #22
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Originally Posted by PSUrivie View Post
Doesn't the '12 Foci have something like 12:1 compression? Seems like that compression and boost aren't going to like each other.
Static compression really doesn't matter it's the dynamic compression that is going to determine how much boost you can run. And dynamic compression is determined by when the intake valve closes ABDC and with the new engine that is variable with the adjustable cam timing.
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Old 05-05-2012, 01:15 PM   #23
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There is a company that fabricates custom turbos here. If I just wanted some boost how much would I expect to pay?
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Old 05-05-2012, 01:23 PM   #24
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Originally Posted by bmylez View Post
When people put just bolt-ons on the MS3, the stock Crank Driven Fuel Pump starts failing from the increased pressure it has to run. New pump is $680. Then guys start running high fuel pressure on the new pump and sometimes blow out the Fuel Pump Relief Valve so they have to either get a stronger RV and rig it up, or turn their fuel pressure down. Also, one guy making LESS than 500whp is at I think 98% injector duty cycle. Guess what? Nobody makes higher flowing injectors.

Another problem is that direction injection only gives you a small window to inject fuel. With port injection, you have way more wiggle room. There's a reason that a guy in the Ukraine put custom port injectors into his intake manifold so that he could get reliable fuel at the 500whp mark.

Direct injection is more efficient, but not really geared towards making lots of power. Yes, the Coyote motor is a beast, but take an old port injected 5.0, build it to hell, and slap a couple of GT40s on there. You will make the power more easily without the hassle of DI.
I believe in one of the new performance magazines, there is a stock looking MS3 making over 600whp.
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