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Thread: NA injectors on a TT conversion? Yay or Hell no!!!

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    Forum User Not Verified Feedback Score 1 (100%) Kilo_SME's Avatar
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    NA injectors on a TT conversion? Yay or Hell no!!!

    Ok, To start off I do already have a set off 360cc injectors and a safc. The problems is im going to have to run on a na ecu untill I can get my hands on a tt one. From what ive heard using the tt injectors will throw my timing off and just be really hard to tune. I was wondering is it possible or maybe even easier to run on the na injectors at waste gate boost. Any info is welcomed as im almost done with the car and dont want to screw something else up.

    Thanks

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    Do you have a wideband just so you can track your actual AFR? I think they'll be fine as I was running a 100 shot of nitrous (dry) on NA injectors which is probably more power than a car on wastegate boost.

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    No I dont have a wideband, but my dad has one of those computers that reads all that I think.

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    That'll just read narrowband which isn't really useful. Get a wideband as you'll need it for tuning anyways.

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    seize the carpe! Feedback Score 0 Lithium's Avatar
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    Did you already modify the harness for low impedance injectors or did you use a TT harness?

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    Quote Originally Posted by Lithium View Post
    Did you already modify the harness for low impedance injectors or did you use a TT harness?
    Ive done non so far. Only wired up the safc. Ok im going to look up on a wideband.

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    Quote Originally Posted by Kilo_SME View Post
    Ive done non so far. Only wired up the safc. Ok im going to look up on a wideband.
    In that case I would up the fuel pressure and run wastegate pressure, are you still using the stock FPR?

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    Quote Originally Posted by Lithium View Post
    In that case I would up the fuel pressure and run wastegate pressure, are you still using the stock FPR?
    Yes, its still stock. So, how should I go by uping the fuel pressure?

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    Quote Originally Posted by Kilo_SME View Post
    Yes, its still stock. So, how should I go by uping the fuel pressure?
    You would need to purchase an aftermarket adjustable FPR. I bought a AEM Fuel Pressure Regulator with the adapator to our fuel rail. This can be purchased from 3SX or other vendors. This will allow you to regulate your fuel pressure, after that you will need the gauge and adapter to see how much you set your pressure at. You can purchase the adapter from 3SX or other vendors and I bought a Summit Racing Mechanical Fuel Pressure Gauge 0-100psi for 22 dollars shipped.

    http://www.3sx.com/store/comersus_vi...dProduct=27478
    http://www.3sx.com/store/comersus_vi...dProduct=24512
    http://www.summitracing.com/parts/SUM-800199/
    Last edited by Atrosity; 11-11-2010 at 04:16 PM.
    vroom vroom i drive a 93 toyota mr2.

    https://car.social

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    Quote Originally Posted by Atrosity View Post
    You would need to purchase an aftermarket adjustable FPR. I bought a AEM Fuel Pressure Regulator with the adapator to our fuel rail. This can be purchased from 3SX or other vendors. This will allow you to regulate your fuel pressure, after that you will need the gauge and adapter to see how much you set your pressure at. You can purchase the adapter from 3SX or other vendors and I bought a Summit Racing Mechanical Fuel Pressure Gauge 0-100psi for 22 dollars shipped.

    http://www.3sx.com/store/comersus_vi...dProduct=27478
    http://www.3sx.com/store/comersus_vi...dProduct=24512
    http://www.summitracing.com/parts/SUM-800199/
    This would be the ideal way to raise your fuel pressure. However if your only doing it untill you get a TT ECU you could just plug your stock FPR right to vacume (bypassing the solenoid) and it will jump your fuel pressure up to 50ish PSI. This should give you some slack when using the NA injectors but I would still be careful.

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