Aquamist HFS-5 system: Official Q&A...
Jul 10, 2007, 08:13 AM
#211
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This is pretty accurate. However, I dont think you can simply subtract manifold PSI from the Pump PSI. The reduction in flow on the nozzles is calculated using the square root of the difference in pressure. (I dont remember the exact equation, I will try to find it.)
Maybe Richard can help us figure out the exact flow of the nozzles at various manifold pressures. Looking at the graph is not really all that exact.
Maybe Richard can help us figure out the exact flow of the nozzles at various manifold pressures. Looking at the graph is not really all that exact.
i dont think a few CCs either way will make THAT much of a diff.. this is just the 'general rule'
Jul 10, 2007, 08:31 AM
#212
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Ryan,
This type of tuning is the big advantage of using the 5th injector output on the AEM vs. tieing into one of the primaries. If you use #5, you can go set a per-cylinder fuel correction for that one and not mess up your main fueling. Set up #5 as a primary, set its fuel tooth to the same as #1 (0) and it will just clone the #1 output but will also be adjustable with the cylinder correction. That way, when your IDC is 70% for 1-4, you can use a +30% offset for #5 to make sure the HSV gets a full 100% DC. You can go +/- 50% with the correction so it makes for a very easy way to "scale" the HSV in proportion to the main fueling.
Just thought I'd throw that out there as it may help you not have to change nozzles as much, etc.
Jeff
This type of tuning is the big advantage of using the 5th injector output on the AEM vs. tieing into one of the primaries. If you use #5, you can go set a per-cylinder fuel correction for that one and not mess up your main fueling. Set up #5 as a primary, set its fuel tooth to the same as #1 (0) and it will just clone the #1 output but will also be adjustable with the cylinder correction. That way, when your IDC is 70% for 1-4, you can use a +30% offset for #5 to make sure the HSV gets a full 100% DC. You can go +/- 50% with the correction so it makes for a very easy way to "scale" the HSV in proportion to the main fueling.
Just thought I'd throw that out there as it may help you not have to change nozzles as much, etc.
Jeff
Jul 10, 2007, 09:09 AM
#214
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Ryan,
This type of tuning is the big advantage of using the 5th injector output on the AEM vs. tieing into one of the primaries. If you use #5, you can go set a per-cylinder fuel correction for that one and not mess up your main fueling. Set up #5 as a primary, set its fuel tooth to the same as #1 (0) and it will just clone the #1 output but will also be adjustable with the cylinder correction. That way, when your IDC is 70% for 1-4, you can use a +30% offset for #5 to make sure the HSV gets a full 100% DC. You can go +/- 50% with the correction so it makes for a very easy way to "scale" the HSV in proportion to the main fueling.
Just thought I'd throw that out there as it may help you not have to change nozzles as much, etc.
Jeff
This type of tuning is the big advantage of using the 5th injector output on the AEM vs. tieing into one of the primaries. If you use #5, you can go set a per-cylinder fuel correction for that one and not mess up your main fueling. Set up #5 as a primary, set its fuel tooth to the same as #1 (0) and it will just clone the #1 output but will also be adjustable with the cylinder correction. That way, when your IDC is 70% for 1-4, you can use a +30% offset for #5 to make sure the HSV gets a full 100% DC. You can go +/- 50% with the correction so it makes for a very easy way to "scale" the HSV in proportion to the main fueling.
Just thought I'd throw that out there as it may help you not have to change nozzles as much, etc.
Jeff
awesome.. this was next on my list of crap to do.. great starting point... thanks.
im sure i'll have some questions for you after i look at AEM.
Jul 10, 2007, 09:22 AM
#215
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Go to Options -> Injectors
Activate #8 as a primary.
Go to Fuel -> Advance -> Injector Phasing
Make sure the Inject Tooth #8 matches #1 (0 by default)
Go to Fuel -> Advanced -> Fuel Trims -> Cylinder Fuel Trims
Adjust #8 +/- as wanted.
Then obviously wire the FIA accordingly... which i dont know how to do.. should i wire the AEM #5 output to the FIA at all or just straight to the HSV?
I should wire it into the FIA inplace of the tap for Injector #1 right?.. then it will just mirror the feed... i love answering my own questions.. and talking to myself.
Please remember, this is a 'suggestion', double check all suggestions.. I'm a HS drop out, and if you listen to me, "your dummer than I is."
EDITED: must use injector #8 for EVO Viii
#5 is wire to the pump solenoid so to wont work. #10 has no driver.
Last edited by ryan0; Jul 20, 2007 at 09:57 AM.
Jul 10, 2007, 12:37 PM
#216
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So far, all the assumption made on the last few post is accurate - not need for me to repeat it - what a bunch of clever guys.
Dudical26
You are correct, no need to calculate "part %DC", just use the 100% fuel DC.
ryan0
You can wire the FIA2 directly to the AEM's 5th injector output. That is all. Make sure the output is "switch-to-ground" to inject.
Dudical26
You are correct, no need to calculate "part %DC", just use the 100% fuel DC.
ryan0
You can wire the FIA2 directly to the AEM's 5th injector output. That is all. Make sure the output is "switch-to-ground" to inject.
Jul 10, 2007, 02:15 PM
#217
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i take that back..
hey 2JZfan... if i add another injector do i need to increase my raw fuel map?
like does it inject 'xxx' of raw fuel, divided by # of injectors?
mine got real lean, real fast with the #5 injector.
have you actually done this with yours or is it all theoretical?
Last edited by ryan0; Jul 10, 2007 at 02:46 PM.
Aug 5, 2007, 10:20 AM
#221
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Richard,
Is there any way to hook up the fail safe function to the AEM truboost EBC gauge solenoid, I noticed that the solenoid on the tru boost is similar to the one from MAC, but it only utilizes the 1 and 2 port and if not how can I intigarte the MAC solenoid when using the AEM Truboost EBC gauge.
Jorge
Is there any way to hook up the fail safe function to the AEM truboost EBC gauge solenoid, I noticed that the solenoid on the tru boost is similar to the one from MAC, but it only utilizes the 1 and 2 port and if not how can I intigarte the MAC solenoid when using the AEM Truboost EBC gauge.
Jorge
Aug 5, 2007, 03:22 PM
#223
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Richard,
Is there any way to hook up the fail safe function to the AEM truboost EBC gauge solenoid, I noticed that the solenoid on the tru boost is similar to the one from MAC, but it only utilizes the 1 and 2 port and if not how can I intigarte the MAC solenoid when using the AEM Truboost EBC gauge.
Jorge
Is there any way to hook up the fail safe function to the AEM truboost EBC gauge solenoid, I noticed that the solenoid on the tru boost is similar to the one from MAC, but it only utilizes the 1 and 2 port and if not how can I intigarte the MAC solenoid when using the AEM Truboost EBC gauge.
Jorge
Can you email me the connection diagram of the AEM EBC controller, I will try to make a drawing to suit.
Aug 6, 2007, 01:19 AM
#225
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Can you do an experiment for me, disconnect one of the wires and let me know if the boosat pressure goes down (do it with care). In 99.9% of the cases, the boost will go down due to the "failsafe" aspect.
If this is the case, you don't need a MAC valve. Just splice a of wires on pin 11/12 of the DDS3v8.
If this is the case, you don't need a MAC valve. Just splice a of wires on pin 11/12 of the DDS3v8.