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Old 05-23-2015, 01:02 AM   #1
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Default cannot find a good answer.

Hey guys bought a 90 1.6 miata that has a cx racing turbo kit on it already. Guy gave me some 315cc injectors from a b2600 truck he says but the car has no sort of tuning as of yet. It runs okay but I'm scared to really get on it because of this. I cannot afford the ms auto tune yet but I am saving I am wondering if there is a cost effective simple solution. A patch job if you will for now. Should I install these injectors ? This is my first miata and I am in a bit over my head.

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Old 05-23-2015, 01:08 AM   #2
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What's your wideband say?
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Old 05-23-2015, 01:12 AM   #3
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no
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Old 05-23-2015, 02:10 AM   #4
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Do not have a wide band.
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Old 05-23-2015, 02:39 AM   #5
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You are going to get raped asking this question here.

Wire your wastegate open so it cant boost and leave it like that until you get a full standalone ecu, bigger injectors, a wideband, and a professional dyno tune.
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Old 05-23-2015, 03:51 AM   #6
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Autotune is entirely useless without a wideband.
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Old 05-23-2015, 04:12 AM   #7
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Quote:
Originally Posted by deezums View Post
Autotune is entirely useless without a wideband.
he was talking about different autotune

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Old 05-23-2015, 10:00 AM   #8
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Those injectors are on the small side. Regardless, without a wideband sensor and a decent way to manage the fuel, putting in larger injectors will do nothing for you.

As stated above, wire the wastegate open until you get the proper fuel management.
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Old 05-23-2015, 02:14 PM   #9
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I tried to come up with responses that were less dramatic than what others have said, but it's really the best advice, unless your goal is to buy a new engine.

Stop the boosts and get proper engine management. That begins with a wideband AFR gauge.
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Old 05-23-2015, 06:46 PM   #10
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I appreciate you guys not hounding me to hard. I thought there might be a cheap ecu flash but from what I read that's a no go. I sourced a factory manifold on Craigslist I am in the process of installing now. I am going to leave the ic piping just hanging out for now until the end of the month when I can order mega squirt auto tune and a wide band gauge. Then I will reinstall the turbo. Should I run the injectors then or go for something bigger?
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