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Old 10-27-2008, 12:56 AM   #1
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Default scared to even start my car.

Ok, I've installed everything and im pretty sure its all correct, but a few problems keep keeping me from starting up my car. First of all let me tell you guys what I have: EMB, vortech 12:1, supra 305cc, intercooled, sr20 t25, o2 signal mod, supra bypass valve.. Now the reasons im scared to start it is,

1. I have no idea how to tune a spark/ignition map.
2. I dont know what this sr20 wastegate actuator is set at but im assuming it is stock, but i dont know what stock is? 8,7,6.5psi?. I have a manual boost controller btw if its too high.
3. this is my first turbo install and im worried but i have read thoroughly.
4. im not sure if my EMB is completely wired right. Im hearing things about resistors and other crap, but i thought the geentops were pnp high impedance.

Anyone have a safe 8psi, intercooled, stock 1.6ignition plug, sparkmap setup they can show me just so i can use it as a base? im scared shitless.
Also, does anyone know what the sr20 stock actuator is set at?
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Old 10-27-2008, 01:01 AM   #2
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Quote:
Originally Posted by Sam Amporful View Post
2. I dont know what this sr20 wastegate actuator is set at but im assuming it is stock, but i dont know what stock is? 8,7,6.5psi?. I have a manual boost controller btw if its too high.
The only thing you can achieve with any boost controller is more boost. You can't lower the boost below what the actuator is by adding a boost controller.
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Old 10-27-2008, 01:04 AM   #3
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8 psi I believe.

The huge FM one I got is default at 6.
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Old 10-27-2008, 01:04 AM   #4
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Stock SR20 wastegate actauators are set at 8psi...
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Old 10-27-2008, 01:11 AM   #5
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Thanks guys, how about a spark/ignition map. I dont even know what im looking at or what numbers I should plug in. I know its one of those wideband processes with tuning and all that stuff but is there a safety map i can run on until i can see dyno time? if u guys have one or can link me to one because i cant find one that can atleast keep me from exploding my engine
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Old 10-27-2008, 01:21 AM   #6
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Quote:
Originally Posted by paul View Post
The only thing you can achieve with any boost controller is more boost. You can't lower the boost below what the actuator is by adding a boost controller.
I know, it was incase if someone had upped the boost since the owner never told me what the actuator was set at. The actuator is adjustable though, I just hate doing things the guess and see way
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Old 10-27-2008, 09:20 AM   #7
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Adjust your actuator to the minimum and bypass your boost controller. With your timing map set to all zeroes, set your base timing on the car to 10 degrees BTDC. Then set up your timing map to pull 1 degree per each psi of boost. At 8 psi you would be at 2 degrees BTDC. If you still have your stock pump in place, you will be safe, but very rich.
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Old 10-27-2008, 09:50 AM   #8
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When you adjust your wastegate, keep in mind the flapper should still be firmly shut.

Also, starting your car won't make it blow up. You're not going to do any damage until you put a load on it.

Why EMB + bigger injectors + FMU? Why not just do bigger injectors + EMB??
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Old 10-27-2008, 10:24 AM   #9
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check voltages and make sure they are all within what your equipment specs are. The EMB should be fiine, just check other electronics you have added.
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Old 10-27-2008, 06:37 PM   #10
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Thanks olderguy, i'll try it out, the injectors were free and the afpr was the first turbo part i bought. I found out i could've left that out later on. Thanks guys for the help, i'll ask more questions when i see what happens
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Old 10-27-2008, 06:43 PM   #11
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prime the turbo before starting the car.

disconnect the CAS, turn the car over until you see oil pressure on the gauge. then reconnect the CAS and start her up
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Old 10-27-2008, 09:07 PM   #12
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ok, ima give it a shot on saturday guys. i'll tell how it goes. hopefully the forum sees another turbo miata, this one will certainly be unique though. You'll see why when and if I put up pictures.
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Old 10-27-2008, 09:54 PM   #13
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Quote:
Originally Posted by SloS13 View Post
Why EMB + bigger injectors + FMU? Why not just do bigger injectors + EMB??
EMB can only handle up to ~330cc injectors, so an FMU is still needed for medium boost.
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Old 10-27-2008, 11:54 PM   #14
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That seems like too much disk. 10:1 or an 8:1 disk would probably be better.
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