new dyno results, but i also have questions
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new dyno results, but i also have questions Today i took my car to a local shop and had my setup tuned on the dyno with safc and type s injectors. The result was 170lbs of whp and 162 lbs of torque at 6 psi. But the problem that i ran into was, i had the injectors turned all the way up and i could not get it to run any richer. So my air fuel is like in the 13s. Ide like to have it in the 12s and lower. My question to you guys is do you think i could run bigger injectors and run richer? Or do i need a bigger fuel pump on the type s injectors? Or do i need bigger injectors and a new fuel pump? This being with the use of my safc. Has anyone else on this bored ran the safc with type s injectors? I think someone else did but i dont know what the outcome was. Let me know what you guys think.
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From: NV
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Wait isn't the ideal ratio 14.7:1? I'm not sure what you mean. Are you running lean or rich? Also, I think you should be using the e-manage with bigger injectors. The afc isn't that great with a turbo setup anyway.
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Originally Posted by gearbox
Wait isn't the ideal ratio 14.7:1? I'm not sure what you mean. Are you running lean or rich? Also, I think you should be using the e-manage with bigger injectors. The afc isn't that great with a turbo setup anyway.
Ok well i was running like 13.0:1 on the air fuel ratio. Im using Type-S injectors. Are those too small for 6psi?
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Rep Power: 0 You might want to be careful man. I know you only had 6psi but the duty cycle of the injectors could be maxed out. I agree about the SAFC I have not really heard any good things about its tuning features. And E-manage would be better. Also get some RC injectors if your looking to turn up the boost a lot. But you should of been able to get more than 13.
To the other guy 14.7 is the ideal gas to air ratio. If he runs 13 its richer. Thats good because too much air will make the car over heat. When turbo'd you want it at about 12 at WOT. If he was closer to 14.7 the turbo would probably damage some engine parts. Due to heat build up.
To the other guy 14.7 is the ideal gas to air ratio. If he runs 13 its richer. Thats good because too much air will make the car over heat. When turbo'd you want it at about 12 at WOT. If he was closer to 14.7 the turbo would probably damage some engine parts. Due to heat build up.
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Rep Power: 285 you need to be in the 11's to be safe. 12's will make more power, but if you get one bad tank of gas, it can kill the motor.
#1. Get some bigger injectors
#2. Return line conversion
#3. install fuel pump
Remember that 14.7:1 is the ideal air/fuel ratio for the cleanest burn. For a turbod street car, you want it in the mid-low 11's. For a race car, you want high 11's to mid 12's.
If you are leaner, it causes the EGT's to go up, and increases the chance of detonation. Detonation leads to blown head gaskets and broken ring lands. And that causes you to cry.
#1. Get some bigger injectors
#2. Return line conversion
#3. install fuel pump
Remember that 14.7:1 is the ideal air/fuel ratio for the cleanest burn. For a turbod street car, you want it in the mid-low 11's. For a race car, you want high 11's to mid 12's.
If you are leaner, it causes the EGT's to go up, and increases the chance of detonation. Detonation leads to blown head gaskets and broken ring lands. And that causes you to cry.
Last edited by turboengnr; Feb 2, 2005 at 05:57 PM.
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From: NV
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Originally Posted by turboengnr
you need to be in the 11's to be safe. 12's will make more power, but if you get one bad tank of gas, it can kill the motor.
#1. Get some bigger injectors
#2. Return line conversion
#3. install fuel pump
Remember that 14.7:1 is the ideal air/fuel ratio for the cleanest burn. For a turbod street car, you want it in the mid-low 11's. For a race car, you want high 11's to mid 12's.
If you are leaner, it causes the EGT's to go up, and increases the chance of detonation. Detonation leads to blown head gaskets and broken ring lands. And that causes you to cry.
#1. Get some bigger injectors
#2. Return line conversion
#3. install fuel pump
Remember that 14.7:1 is the ideal air/fuel ratio for the cleanest burn. For a turbod street car, you want it in the mid-low 11's. For a race car, you want high 11's to mid 12's.
If you are leaner, it causes the EGT's to go up, and increases the chance of detonation. Detonation leads to blown head gaskets and broken ring lands. And that causes you to cry.
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From: so cal djmota=oscar
Rep Power: 323 just one thing I thought I should bring up. If you where using the dyno's tail pipe sniffer, then an exhaust leak will read lean. I had this happen on my last dyno and it freaked me out. Now that I have a wide band installed in line, and the leak is fixed, tuning my vafc2 is not a problem.
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Originally Posted by djmota
just one thing I thought I should bring up. If you where using the dyno's tail pipe sniffer, then an exhaust leak will read lean. I had this happen on my last dyno and it freaked me out. Now that I have a wide band installed in line, and the leak is fixed, tuning my vafc2 is not a problem.
what set up are you running?
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Rep Power: 0 I thought the Type S injectors were good for up to 10-11PSI. Isn't the E-manage more adjustable for fuel adjustments than the SAFC. Atleast thats what I thought. Thanks.
so what is the max amount of boost that can be achieved (safely) with type-s injectors and a return fuel setup, tuned with emanage?
Last edited by NashVegasEX; Feb 2, 2005 at 09:28 PM.
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From: NV
Rep Power: 812 The best would be the return fuel conversion from streetlevelperformance.com then you can get an adjustable fuel pressure regulator and makes it a whole lot easier.
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Rep Power: 0 I ran 250whp on a dyno tuned with a VAFC2 on stock bottom and stock injectors. I would have ran aorund 270whp but the injectors were maxed out and it needed more fuel. I ran 12-14psi daily for almost a year with no problems. My A/F was around 13.. Once I stacked two headgaskets to lower compression I had no problems running 14psi. I even spiked to 15-16psi on the track.
I dont suggest trying this without the know how in tuning and a shop full of tools to fix whatever you break. BUt the mighty D17 can take a beating. Dont be afraid to turn the boost to 9psi for daily and 12psi on the weekends. Just make sure you run slightly rich.
Good luck to all. I just thought I would drop by and stir the pot.
BTW I am now using Emanage w/ profec EO1 on my Skyline. I will never use a SAFC and MBC(bleeder valve) again. The Greddy setup is very easy to use and tune once you get it setup. But if all you have is a FMU and vafc you can still make big numbers on stock setup.
I dont suggest trying this without the know how in tuning and a shop full of tools to fix whatever you break. BUt the mighty D17 can take a beating. Dont be afraid to turn the boost to 9psi for daily and 12psi on the weekends. Just make sure you run slightly rich.
Good luck to all. I just thought I would drop by and stir the pot.
BTW I am now using Emanage w/ profec EO1 on my Skyline. I will never use a SAFC and MBC(bleeder valve) again. The Greddy setup is very easy to use and tune once you get it setup. But if all you have is a FMU and vafc you can still make big numbers on stock setup.
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Rep Power: 0 Bastard you have a skyline, don't talk to me again lol. I'll be running the Emanage with the profec E01 along with the type S injectors. I think I should be fine. Besides I'm only looking to run 8psi. What skyline do you have an R32.
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Originally Posted by NashVegasEX
so what is the max amount of boost that can be achieved (safely) with type-s injectors and a return fuel setup, tuned with emanage?
I've heard of people running more boost on them (10psi) I think the problem with the afc is that it cannot rec. that the injectors are larger so it will only dump so much fuel. The emanage has the injector correction factor that works pretty nice. My RSX injectors are running smooth now.
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Originally Posted by Pedro Lopes
So what are you saying dezod I should go return line. Do you know if I would pass ispection with the return line with the stock cat.
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Originally Posted by deciuss
dez did you have an inline pump when you maxed at 8 or just the stock pump and injectors
Edit: I can't see raising FP with an inline pump for no reason. The return system is def the way to go. SF's fuel system is merely enrichment w/ lack of tunability. Just a quick fix to fuel IMO.
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Originally Posted by SODJAZERO
Today i took my car to a local shop and had my setup tuned on the dyno with safc and type s injectors. The result was 170lbs of whp and 162 lbs of torque at 6 psi. But the problem that i ran into was, i had the injectors turned all the way up and i could not get it to run any richer. So my air fuel is like in the 13s. Ide like to have it in the 12s and lower. My question to you guys is do you think i could run bigger injectors and run richer? Or do i need a bigger fuel pump on the type s injectors? Or do i need bigger injectors and a new fuel pump? This being with the use of my safc. Has anyone else on this bored ran the safc with type s injectors? I think someone else did but i dont know what the outcome was. Let me know what you guys think.
BTW, what size turbo are you running? T3/T04 B or E I presume judging by the power produced.
