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Two interesting questions about SMC

Old Dec 7, 2005, 01:37 AM
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Two interesting questions about SMC

I am very new to this alcohol topic. My car is already tuned and running very good but I wish to know: Can I change the start spraying point after the tune is done. My tuner set the starting point at around 18psi but I want to lower it. Can I?
Would it affect the tunning?

The second question is about my SMC kit. I have a single nozzle number #7 and it works great but I wish to know if I can connect a "Y type"connector and run two nozzles in order to make the mixture more efficient.

Thanks for your help.

Carlos
Old Dec 7, 2005, 06:43 AM
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You could do both but a new tune would be needed. Since you are working on a flash, they typically set the boost a little higher than normal that way when not spraying the car isn't a complete dog. Most people that can switch maps via a UTEC or AEM or whatever start spraying in the 12 to 14 psi range.
Old Dec 7, 2005, 06:54 AM
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I changed mine...orig start 7psi end 18psi at 25 boost.

now, i adjusted to 10 psi end at 25 psi at 28 boost.

no addtl. tune done.

car seems the same track it 10+ passes...no problem.
Old Dec 7, 2005, 06:56 AM
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You can definitely change it but if its not tuned for it you are more than likely to just be running super rich in the areas it wasn't tuned for.
Old Dec 7, 2005, 05:22 PM
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Carlos, call Hago to see if they have smaller nozzles. Check with them "if " they have #3 + #4 = #7. The 2 advantage of the setup i see is
1 - you prolly get better atomization with 2 nozzles
2 - incase there is a clog, you will at least still have 1/2 of the DA still going to your engine.

Originally Posted by fromWRXtoEVO
The second question is about my SMC kit. I have a single nozzle number #7 and it works great but I wish to know if I can connect a "Y type"connector and run two nozzles in order to make the mixture more efficient.
Old Dec 8, 2005, 05:32 PM
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Why do you want to lower your turn-on boost level? What is your max level set at?
Old Dec 9, 2005, 01:06 AM
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Well, the dial for cutting of the alcohol injection has a reading of 26. Does that means that I can not go over 26psi?
Old Dec 9, 2005, 04:23 AM
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Originally Posted by fromWRXtoEVO
Well, the dial for cutting of the alcohol injection has a reading of 26. Does that means that I can not go over 26psi?
What boost were you tuned for? I don't think that you could safely run more boost than you were tuned at, except maybe if you were tuned at less than 26. And even then, I'd be careful if you don't have a way to detect knock or monitor AFRs. But it's certainly possible to tune the car for more than 26 even though the dial maxes at 26 (just as you could tune it for more than 26 with no alky at all, but for the detonation problem).
Old Dec 9, 2005, 12:22 PM
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you can change it a little bit, but do not change it alot. my kit was tuned with the start spray at 10 psi and the max at 20 psi. if i turned mine up to 18 psi, my timing would be too aggressive from 10 psi-18 psi so that could cause some detonation. you can go down a little bit, but then the car will be running rich where it was tuned for it.

as far as running 2 nozzles, whats the point??? it works perfectly just the way it is. It wouldnt make anything run more efficient, you'd just have two nozzels. if your staying on stock turbo, just leave it the way it is.
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