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Old 10-16-2008, 11:03 PM   #1
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Default AFPR on e-manage blue

I figured that I probably wont need my AFPR since im getting an EMB. should I keep the AFPR installed and use the emanage with it? or should I just sell the AFPR and use the emanage by itself? Do I even need the AFPR? If I dont, I'll be mad for wasting money
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Old 10-16-2008, 11:07 PM   #2
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Depends what your goals are and what injectors you are using.
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Old 10-16-2008, 11:08 PM   #3
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Sell it, its going to cause a headache for you when you tune.
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Old 10-16-2008, 11:10 PM   #4
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injectors are light greentops from supra. 305cc i think, but some say 330cc.
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Old 10-16-2008, 11:16 PM   #5
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im just looking for somewhere close to 200 in the next month. then im rebuilding an engine to take it up to 300hp after I go torsen and 1.8 tranny, should I keep it for that? also would i need a walbro 190 still?
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Old 10-17-2008, 08:29 AM   #6
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With those injectors, you will need to raise your fuel pressure to reach 200 HP. I would install it.
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Old 10-17-2008, 11:37 AM   #7
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I have vortech with 12:1 disc, what would you suggest? 6:1? 8:1? And can EMB not raise pressures? And will I need to get the walbro pump also?
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Old 10-17-2008, 12:55 PM   #8
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EMB cannot raise fuel pressure. The 12:1 will max out at ~80psi with a good stock pump. If you go with a Walbro 190LPH you will need to drop to a smaller disc so that you don't go too high on pressure. It is a balance you will need to establish based on duty cycle vs. boost level.

I would stay with the stock pump, the 12:1 disc, and get a wideband to see where you are as you increase boost. If it is too rich at low boost, go to a smaller disc. As you go higher with boost levels, add additional injection to maintain a decent AFR.

If you decide to go Megasquirt, leave out the AFPR and opt for much larger injectors to fuel at low pressures.
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Old 10-17-2008, 05:13 PM   #9
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ok, im running 7psi off the bat. isnt that just enough before im gonna have to move to a better pump to keep a good amount of fuel in? And what disc for the AFPR would you use, if you were doing the same, to run the walbro 190lph, 305cc inj., and 7psi. I just need to get alittle more than enough fuel. I will go wideband to see also I guess
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Old 10-23-2008, 01:12 AM   #10
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ok so i got my setup ,just for now to just get it running, and now i need to know where to go tuningwise. I dont have a wideband yet since this turbo thing put the smackdown on my wallet. I just want to know whats a safe setup for what i have now just to start as a base. vortech AFPR 12:1, 305cc greentop supra, EMB, dont even know what my actuator is set at but i have a manual boost contrl. I need to know, if anyone happens to know, what a sr20s t25 stock actuator is set at. But back to the main topic. to run 7psi on my setup, what do i have to retard the ignition to? also is it safe to overfuel and will the car idle like that?
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Old 10-23-2008, 06:20 AM   #11
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don't quote me on this, but i think you will be way rich with the 12:1 disk. Im not sure which disk to use but I think brain's faq has a link to a thread that can help you. Your gonna have to wait for someone who knows, or, do the math (after you find out what math to do of course)

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Also. The reason why I have not thrown a turbo back on my car is that when I get above 5 psi I want to be sure I get it right. I am broke as hell and its taking me a long time to save for a wideband, but I would rather blow up my engine because I am stupid at tuning, than blow it up because I am just plain stupid. Get the wideband.
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Old 10-23-2008, 06:22 AM   #12
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Personally, I would let the turbo sit in the garage until I could spend 200 bucks on a wideband. Not worth blowing up your motor over something that small.
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Old 10-23-2008, 12:27 PM   #13
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Quote:
Originally Posted by KPLAFIN View Post
Personally, I would let the turbo sit in the garage until I could spend 200 bucks on a wideband. Not worth blowing up your motor over something that small.
+ 1.21 jigagree.
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Old 10-23-2008, 03:21 PM   #14
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wait overfueling will blow up my engine? im running low psi so i dont think overboosting will be a huge problem. I can retard my timing. Also a 12:1 disc would be too rich if i were to have an aux. fuel pump. I dont have one at the time so im not dropping the disc rate just yet. all stock greddys use them so i dont see the prob. on low boost, but a greddy kit cant allow you to retard the timing like I can with a EMB.
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