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Old 01-26-2016, 04:42 AM   #1
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Default Naturally Aspirated motor with a Megasquirt ECU

Hey guys, I was curious about how much of a power increase is possible with a Megasquirt paired with a wideband o2 and some rx-8 fuel injectors. Should I be expecting any extra power at all? My Miata is a 1.8
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Old 01-26-2016, 04:57 AM   #2
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I wouldn't bother installing bigger injectors when you're staying NA. The stock injectors are big enough. Better spend the money on a more open catback / airfilter. Don't expect huge gains from only the Megasquirt though. I guesstimate a single digit number.
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Old 01-26-2016, 05:24 AM   #3
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Thanks for the quick reply!
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Old 01-26-2016, 09:18 AM   #4
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We've found a 3-5 hp gain from removing the MAF on the '94-'97 cars. You'd have thought a hot wire MAF would be less restriction than a vane air flow meter, but in this case, it wasn't.
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Old 01-26-2016, 10:45 AM   #5
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I've seen +10hp and torques on my '94 with an MS2e, RB header, exhaust, and exintake swap.

It's peppy. But I cringe when I think about how much I paid for those ten ponies.
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Old 01-26-2016, 02:04 PM   #6
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Peak gains won't be anything to write home about. Overall though, there's quite a decent improvement.
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Old 01-27-2016, 12:07 AM   #7
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10-15 HP / TQ especially down low. Megasquirt N/A is totally worthwhile. Bigger injectors aren't until you want to run E-85 or start putting down big numbers.

I run NB injectors at 80 PSI and only 70% DC with about 150-160 WHP.
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