2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

factory s5 n/a ecu capabilities

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Old Feb 7, 2004 | 12:28 AM
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factory s5 n/a ecu capabilities

i'm going with an n/a streetport when rebuilding my engine. i can't seem to find anything helpful to its maximum capacities. is their a maximum (ideal) horsepower that the stock ecu can handle? maybe a good estimated number someone has come up with?
similarly, what power can the fuel injectors (ideally) support themselves?
is their a weaker link between the two (amount of fuel vs how much air the ecu can properly read) ?

as you can tell, i dont know how to properly ask the question as it is a mouthful. any help including numbers already met is of course appreciated.

thanks,
casio

::wanted to add that i will hopefully at least have an safc, so that can be counted in the equation. *still searching for info on fuel capabilities,* but hopefully this should be less of a problem than how much air intake the ecu can read since i could control bigger injectors with the piggyback.

Last edited by casio; Feb 7, 2004 at 12:38 AM.
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Old Feb 7, 2004 | 03:37 AM
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even telling me to search (MORE!!) would be a free bump. or i could take the initiative myself. no leads whatsoever?
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Old Feb 7, 2004 | 05:10 AM
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The NA already runs rich, do getting some kinda fuel controller (i.e. S-AFC) will help lean it out for more power.

Turbo FC's run 4 x 550's, and max out at around 250bhp safely.

If we extrapolate down to 4 x 460, I get -16% or about 210bhp (flywheel).


-Ted
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Old Feb 7, 2004 | 11:54 AM
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N/a's have a different BSFC and can produce more power with the same size injector. I think they max out @ 230(from what I have heard).
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Old Feb 7, 2004 | 02:36 PM
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i'd wanted to lean the car out before, but never had the s-afc (or anything of the like). so slightly bigger injectors may be necessary if power goals were to be met. i believe the safc would be sufficient to control the upgraded injectors, so that leaves me with the original problem of air intake. am i worrying about something that shouldn't be a real problem?
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