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I'd first like to state: Who the hell tuned these? 13:1 AF for a FI car? IDIOTS!
Relying on a dirty dyno WB is an unsafe practice. In most cases it doesn't tend to jive with any onboard WBo2 sensors.
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Second Note: 1.6l has a flatter torque curve. Torque doesn't peak and then drop off like on the 1.8l. Yes, it's less, but add Meth Inj (=+timing) and that wouldn't be the case.
Wow it's flat, it's also low. Even if both those dynos made exactly the same peak HP at redline, the 1.8L would make more torque throughout. That equals a faster car.
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Third Note: Why the hell is the 1.6l peak whp at 5800rpm? Mine, even with a POS Greddy actuator that would fall from 10psi to 7-8psi @ redline made peak whp at 7k rpm.
It dropped off a lot of boost up top.
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First note: Does the 1.6l have cam gears? Cause it has a similar low at the lower RPMs that mine has. More extreme, but who knows if he didn't overdo it slightly trying to get more up top.
no.
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Second Note: WHOA...was this a baseline after a new ECU installed? The 1.6l AF is AWFUL!!! 14:1 AF is great for a FI car. :rolleyes: More than a full pt between their AF readings.
In your effort to overlook everything that's benefictial about a 1.8L turbo setup you need to quit worrying about AFRs.
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Fourth note: Same peak torque, and both hold a nice plateau. Difference is exaggerated by either cam gears being overly sex'd, the awful AF, or both.
Please, by all means don't notice all the extra low-end you get with the 1.8L....Your Meth kit cannot provide all that torque down low.
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Both dyno's show exactly what I have been saying, there isn't enough of a difference between a 1.6l and 1.8l to mandate that all 1.6s go in the trash and everyone go to a 1.8l. That small difference is a slightly higher CR and a meth kit away from being erased and possibly reversed. You know, about the same price as swapping to a 1.8l.
You're insane and need your mom to tuck you in at night.
Now here you go, two dynos with the same peak HP. One makes "peaky" torque and it drops off towards redline. the other makes flat torque and it actually rises towards redline:
http://boostedmiata.com/dynos/intake...ld_compare.jpg
which would you prefer?