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Originally Posted by ZKraken22
So adding FI to a NA car is more reliable? So im seeing more guys with z's and G's adding Strokers along with a FI kit. Why are they doing that? to make the car more reliable!
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Are you serious? They are adding a stroker on top of FI to make more power. There's still no replacement for displacement, and a stroked motor is fantastic for producing torque.
I didn't stroke my motor for reliability...I did it for POWER
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buddies na mustang with 135K... Cam, heads you name it and the car still runs. He is still in college he has needed a tune and new spark plugs a year ago and the car is still running. Let me see a boosted car last a year needing a re tune.
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a) apples and oranges
b) happens all the time, especially when you are only picking up a couple of horses
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The car that Megan370z posted im not telling OP to run anything like that. more like gabe3d over at (my350z) with the Stroker, cam G35 who has 100 miles on the engine. NA is reliable.
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There are only a couple of ways to increase power...it pretty much comes down to trying to make air and fuel mix better. FI does this pretty easily-- you take your engine and you cram more air down it's gullet. If your goal isn't big power, you can still run an OEM-style tune, and keep things perfectly reliable.
To get results of a similar magnitude from an NA build, you are having to run an extremely aggressive tune that kills driveability and generates a whole ton of extra heat to deal with. You are fundamentally limited by atmospheric pressure, and this leaves you no other option than trying to get closer to the edge. It comes down to basic chemistry and physics.
The only way an "NA build" is going to be more reliable than an FI build is if:
A) you put together a crappy FI system
B) you are talking low-dollar, low-power builds (ie, bolt-ons)