As alot of members of this site are aware, I have been working on developing software to tune the pt3/pt6 family of ecu's that are used to run our f22ax's.
When reading wikipedia I see:
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F22A
This engine series was used in the Honda Accord and Honda Prelude S. Aside from differences in tuning, these engines are substantially similar.
Specifications
Bore × Stroke: 85.0 × 95.0 mm
Displacement: 2156 cc
Valve configuration: SOHC, 16 valves, non-VTEC
Compression ratio: 8.8:1
Max power: F22A1: 125 hp (93.21 4 kW) @ 5200 rpm. (Accord Dx,Lx). The 1992–1996 Prelude S had a F22A1 but because of a different more aggressively tuned ECU (P12), the power output was 135 hp (100 kW).
F22A3: 150 hp (110 4 kW) European domestic market engine, with more power due to less strict emission standards.
F22A4: 130 hp (96.94 kW) @ 5200 rpm. (Accord Ex) The F22A4 is the same motor as the F22A1 but it has slightly more power due to a tubular designed header and slightly bigger exhaust piping.
F22A6: 140 hp (104.40 kW) @ 5600 rpm. The F22A6 is the same as the F22A1 except for a slightly more aggressive camshaft, a better flowing cast exhaust manifold, a different more aggressively tuned ECU (PT6), and a different intake manifold that utilizes IAB's and also has a bigger plenum. The F22A6 also has a windage tray in the oil pan, and stiffer valve springs to accommodate the more aggressive camshaft.
F22A7: 140 hp (104.40 kW) @ 6101 rpm
Max torque: F22A1: 137 lb·ft (186 N m) @ 4000 rpm
F22A4: 142 lb·ft (193 N m) @ 4000 rpm
F22A6: 142 lb·ft (193 N m) @ 4500 rpm
F22A7: 145 lb·ft (198 N m) @ 5000 rpm
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The f22a3 supposedly has more horsepower due to less strict emissions standards. I would really like to aquire as much information as possible about the pt3/pt6's that are most likely used to run these two engines. This would include pictures, and most importantly reading the data off the 28-pin prom in the ecu.
What does this mean? What am I thinking?
We all know the p12 ecu from a prelude can add 10 hp just by changing the ecu from a pt3 for an a1/a4 cam. Everyone else with a6's do not have a factory option available to do the same thing, except what could possibly be this. With access to this specific rom, you could get that extra hp for cheap, and when it comes to emission time all you need to do is flip a switch (using a two timer setup), and you can be running smoggable program (maybe even a california emission version for the other 49 states to help pass emissions).
Whoever uploads a genuine pt3/pt6 ecu rom used for the f22a3 will most undoubtedly receive significant reputation. If the ecu in fact is from the same family as the pt3/pt6.
In regards to the f22a7, I would definately like to see the programming and pictures of the ecu used with the motor too.
Who here would like to add 10 hp to their (healthy) f22a6 for under $7?
When reading wikipedia I see:
------------------------------------------------------
F22A
This engine series was used in the Honda Accord and Honda Prelude S. Aside from differences in tuning, these engines are substantially similar.
Specifications
Bore × Stroke: 85.0 × 95.0 mm
Displacement: 2156 cc
Valve configuration: SOHC, 16 valves, non-VTEC
Compression ratio: 8.8:1
Max power: F22A1: 125 hp (93.21 4 kW) @ 5200 rpm. (Accord Dx,Lx). The 1992–1996 Prelude S had a F22A1 but because of a different more aggressively tuned ECU (P12), the power output was 135 hp (100 kW).
F22A3: 150 hp (110 4 kW) European domestic market engine, with more power due to less strict emission standards.
F22A4: 130 hp (96.94 kW) @ 5200 rpm. (Accord Ex) The F22A4 is the same motor as the F22A1 but it has slightly more power due to a tubular designed header and slightly bigger exhaust piping.
F22A6: 140 hp (104.40 kW) @ 5600 rpm. The F22A6 is the same as the F22A1 except for a slightly more aggressive camshaft, a better flowing cast exhaust manifold, a different more aggressively tuned ECU (PT6), and a different intake manifold that utilizes IAB's and also has a bigger plenum. The F22A6 also has a windage tray in the oil pan, and stiffer valve springs to accommodate the more aggressive camshaft.
F22A7: 140 hp (104.40 kW) @ 6101 rpm
Max torque: F22A1: 137 lb·ft (186 N m) @ 4000 rpm
F22A4: 142 lb·ft (193 N m) @ 4000 rpm
F22A6: 142 lb·ft (193 N m) @ 4500 rpm
F22A7: 145 lb·ft (198 N m) @ 5000 rpm
---------------------------------------------------------
The f22a3 supposedly has more horsepower due to less strict emissions standards. I would really like to aquire as much information as possible about the pt3/pt6's that are most likely used to run these two engines. This would include pictures, and most importantly reading the data off the 28-pin prom in the ecu.
What does this mean? What am I thinking?
We all know the p12 ecu from a prelude can add 10 hp just by changing the ecu from a pt3 for an a1/a4 cam. Everyone else with a6's do not have a factory option available to do the same thing, except what could possibly be this. With access to this specific rom, you could get that extra hp for cheap, and when it comes to emission time all you need to do is flip a switch (using a two timer setup), and you can be running smoggable program (maybe even a california emission version for the other 49 states to help pass emissions).
Whoever uploads a genuine pt3/pt6 ecu rom used for the f22a3 will most undoubtedly receive significant reputation. If the ecu in fact is from the same family as the pt3/pt6.
In regards to the f22a7, I would definately like to see the programming and pictures of the ecu used with the motor too.
Who here would like to add 10 hp to their (healthy) f22a6 for under $7?
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