Mini AFC 2.0
08-07-2004, 08:14 PM
#23
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Well here'* the math just to make things a little easier. I'm going to use several BSFC'* because I don't know the specific for ours. Naturally aspirated is generally 0.45 - 0.50 while Supercharged is generally 0.55 - 0.60.
Here'* what injectors should handle what HP:
(All injectors rated at 43.5psi and running 47psi (+10 for */c) and max duty cycle of 95%)
Naturally Aspirated
Injector BSFC Theoretical HP limit
21 0.45 276
21 0.47 264
21 0.49 253
24 0.45 315
24 0.47 302
24 0.49 290
26 0.45 342
26 0.47 327
26 0.49 314
Supercharged
Injector BSFC Theoretical HP limit
30 0.55 323
30 0.57 311
30 0.59 301
36 0.55 387
36 0.57 374
36 0.59 361
Just for *'* and giggles
26 0.57 270
24 0.57 249
21 0.57 218
Edit: So you're N/A running 36lbs?? Here'* what you're looking at:
36 0.45 473
36 0.47 453
36 0.49 435
Something you need to remember is that supercharged engines require larger injectors because they force air into it. You can't compare an injector size from a supercharged engine with x hp and since you're making x hp think you need that size. Its a whole different ball game.
For reference:
I used 43.5psi because thats what most injectors are rated at. The actual pressure is still 47psi.
BSFC is Brake Specific Fuel Consumption, its how much fuel it takes the engine to make 1hp for 1 hour. Its measured by determining how much fuel goes to the injectors, how much returns from them, and a handful of math between.
The supercharged gets 10psi extra because the FPR is 1:1, 1psi increase in boost = 1psi increase in fuel pressure.
This IS NOT a definitive list of how much HP you can handle. Big changes can happen if the fuel pressure is higher or lower than the 47 I ran them at and clogged injectors can contribute a lot also. Another factor is the BSFC as its not known and it also assumes a perfectly running engine. Factors such as lazy o2 sensors, dirty MAF sensors and other factors can greatly affect the HP limit.
Its just good for reference to when you should start thinking about upgrades.
Here'* what injectors should handle what HP:
(All injectors rated at 43.5psi and running 47psi (+10 for */c) and max duty cycle of 95%)
Naturally Aspirated
Injector BSFC Theoretical HP limit
21 0.45 276
21 0.47 264
21 0.49 253
24 0.45 315
24 0.47 302
24 0.49 290
26 0.45 342
26 0.47 327
26 0.49 314
Supercharged
Injector BSFC Theoretical HP limit
30 0.55 323
30 0.57 311
30 0.59 301
36 0.55 387
36 0.57 374
36 0.59 361
Just for *'* and giggles
26 0.57 270
24 0.57 249
21 0.57 218
Edit: So you're N/A running 36lbs?? Here'* what you're looking at:
36 0.45 473
36 0.47 453
36 0.49 435
Something you need to remember is that supercharged engines require larger injectors because they force air into it. You can't compare an injector size from a supercharged engine with x hp and since you're making x hp think you need that size. Its a whole different ball game.
For reference:
I used 43.5psi because thats what most injectors are rated at. The actual pressure is still 47psi.
BSFC is Brake Specific Fuel Consumption, its how much fuel it takes the engine to make 1hp for 1 hour. Its measured by determining how much fuel goes to the injectors, how much returns from them, and a handful of math between.
The supercharged gets 10psi extra because the FPR is 1:1, 1psi increase in boost = 1psi increase in fuel pressure.
This IS NOT a definitive list of how much HP you can handle. Big changes can happen if the fuel pressure is higher or lower than the 47 I ran them at and clogged injectors can contribute a lot also. Another factor is the BSFC as its not known and it also assumes a perfectly running engine. Factors such as lazy o2 sensors, dirty MAF sensors and other factors can greatly affect the HP limit.
Its just good for reference to when you should start thinking about upgrades.
08-08-2004, 01:10 AM
#24
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I think you've created a monster here. At least some combinations of stuff we're not familiar with.
First of all, running without the chip for an extended period of time may net a better result. That chip may be incompatible with your setup. You may need to go with headers for one, in order to take full advantage of the valvetrain mods. Is your chip 'tuned' for your setup? Probably not. The Superchip is a pretty generic thing, and mostly only messes with.....you guessed it......fuel curves. I recall it has a TPS enhancer, as well. It'* like all the ebay chips rolled into one. Not really a 'true' performance PCM.
Your thermostat isn't doing anything without your fans coming on early. Do the high speed fan switch, port your manifolds, or go with headers, and drop the chip. Go with something else, or nothing, and I think you'll be better in the long run.
There may be other issues here, too. But I think the key is getting the AFC off, the SChip out, and giving the car time to settle down, then get a real diagnosis. Perhaps an Autotap before and after. We need hard numbers to help on this one.
First of all, running without the chip for an extended period of time may net a better result. That chip may be incompatible with your setup. You may need to go with headers for one, in order to take full advantage of the valvetrain mods. Is your chip 'tuned' for your setup? Probably not. The Superchip is a pretty generic thing, and mostly only messes with.....you guessed it......fuel curves. I recall it has a TPS enhancer, as well. It'* like all the ebay chips rolled into one. Not really a 'true' performance PCM.
Your thermostat isn't doing anything without your fans coming on early. Do the high speed fan switch, port your manifolds, or go with headers, and drop the chip. Go with something else, or nothing, and I think you'll be better in the long run.
There may be other issues here, too. But I think the key is getting the AFC off, the SChip out, and giving the car time to settle down, then get a real diagnosis. Perhaps an Autotap before and after. We need hard numbers to help on this one.
08-08-2004, 10:36 PM
#25
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Found some info today on how to tune your afc v2.0....look here
http://www.stlclubgp.com/tech/afc20/
http://www.stlclubgp.com/tech/afc20/
08-09-2004, 03:19 PM
#26
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Originally Posted by willwren
I think you've created a monster here. At least some combinations of stuff we're not familiar with.
First of all, running without the chip for an extended period of time may net a better result. That chip may be incompatible with your setup. You may need to go with headers for one, in order to take full advantage of the valvetrain mods. Is your chip 'tuned' for your setup? Probably not. The Superchip is a pretty generic thing, and mostly only messes with.....you guessed it......fuel curves. I recall it has a TPS enhancer, as well. It'* like all the ebay chips rolled into one. Not really a 'true' performance PCM.
Your thermostat isn't doing anything without your fans coming on early. Do the high speed fan switch, port your manifolds, or go with headers, and drop the chip. Go with something else, or nothing, and I think you'll be better in the long run.
There may be other issues here, too. But I think the key is getting the AFC off, the SChip out, and giving the car time to settle down, then get a real diagnosis. Perhaps an Autotap before and after. We need hard numbers to help on this one.
First of all, running without the chip for an extended period of time may net a better result. That chip may be incompatible with your setup. You may need to go with headers for one, in order to take full advantage of the valvetrain mods. Is your chip 'tuned' for your setup? Probably not. The Superchip is a pretty generic thing, and mostly only messes with.....you guessed it......fuel curves. I recall it has a TPS enhancer, as well. It'* like all the ebay chips rolled into one. Not really a 'true' performance PCM.
Your thermostat isn't doing anything without your fans coming on early. Do the high speed fan switch, port your manifolds, or go with headers, and drop the chip. Go with something else, or nothing, and I think you'll be better in the long run.
There may be other issues here, too. But I think the key is getting the AFC off, the SChip out, and giving the car time to settle down, then get a real diagnosis. Perhaps an Autotap before and after. We need hard numbers to help on this one.
I did drive about 40-50 miles with the original eprom and it was terrible. I had to drive with 2 feet and it showed no signs of getting better.
I would really like to see where your gettin your info on superchips before i pull it out.
Ported manis are a definate in the future but i ran out of funds.
I did make a fan switch this weekend and it helps out with temps a little.
Do they have a OBD1 compatible autotap?
I'm still looking into something like this:
08-09-2004, 04:52 PM
#28
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Originally Posted by 95naSTA
Originally Posted by willwren
I think you've created a monster here. At least some combinations of stuff we're not familiar with.
First of all, running without the chip for an extended period of time may net a better result. That chip may be incompatible with your setup. You may need to go with headers for one, in order to take full advantage of the valvetrain mods. Is your chip 'tuned' for your setup? Probably not. The Superchip is a pretty generic thing, and mostly only messes with.....you guessed it......fuel curves. I recall it has a TPS enhancer, as well. It'* like all the ebay chips rolled into one. Not really a 'true' performance PCM.
Your thermostat isn't doing anything without your fans coming on early. Do the high speed fan switch, port your manifolds, or go with headers, and drop the chip. Go with something else, or nothing, and I think you'll be better in the long run.
There may be other issues here, too. But I think the key is getting the AFC off, the SChip out, and giving the car time to settle down, then get a real diagnosis. Perhaps an Autotap before and after. We need hard numbers to help on this one.
First of all, running without the chip for an extended period of time may net a better result. That chip may be incompatible with your setup. You may need to go with headers for one, in order to take full advantage of the valvetrain mods. Is your chip 'tuned' for your setup? Probably not. The Superchip is a pretty generic thing, and mostly only messes with.....you guessed it......fuel curves. I recall it has a TPS enhancer, as well. It'* like all the ebay chips rolled into one. Not really a 'true' performance PCM.
Your thermostat isn't doing anything without your fans coming on early. Do the high speed fan switch, port your manifolds, or go with headers, and drop the chip. Go with something else, or nothing, and I think you'll be better in the long run.
There may be other issues here, too. But I think the key is getting the AFC off, the SChip out, and giving the car time to settle down, then get a real diagnosis. Perhaps an Autotap before and after. We need hard numbers to help on this one.
Our experiences with the Superchips are bad. We had one in a 94SSE (same PCM setup as you), and it was worthless. That was Allmachtige before he bought his SSEi. We had another member (don't remember who) that pulled his superchip in disgust.
