D17VTECPOWER

iTrader: (1)

I understand that this is NOT a practical swap for many reasons, but COULD I hypothetically mount a D16 motor on my D17 trans, and run the D16 with my D17 ECU? I see no reason why it wouldn’t work since the D17 ecu will provide spark and fuel if I mod the harness to plug into D16 sensors and fuel injectors and use the COP ignition system, although I am sure it would have issues and not run properly if it did start. I understand that there would be issues like the exhaust not connecting, coolant hoses, etc. But it would theoretically start, right? I have no plans of actually doing this, but technically I see no reason why this wouldn’t work. Do you?

xRiCeBoYx

iTrader: (22)

Except the d17 uses coil on plug and the d16 uses a dizzy

D17VTECPOWER

iTrader: (1)

I said in the OP if I use the COP ignition system, like if I put the D17 coils on the D16.

D17VTECPOWER

iTrader: (1)

I have a 2005 Civic LX that I put a D17A2 VTEC motor in. It has been running on the stock ECU for about a year just fine, but I am wondering if there would be a performance or gas mileage benefit if I get the proper ECU. I wired a switch for VTEC since the stock ECU won’t automatically activate it, so I presume that the only benefit to getting a VTEC ECU is automatic VTEC, I wouldn’t think that performance would improve. But I heard that the VTEC ECU has more advanced ignition timing and different fuel tables, so it performs better. Which is true? Also, if I get a JDM ECU, which supposedly makes more power and improves gas mileage, will it work with a USDM immobilizer and key, or would I have problems? Thank you in advance.

D17VTECPOWER

iTrader: (1)

I have a 2005 Civic that I would like to install a JDM D17A ECU in. What do I need to be aware of? I have some questions:
1. Will the ECU plug and play?
2. Will US scan tools connect to JDM ECUs?
3. Do JDM ECUs have immobilizers? If so, can Honda flash it?
4. Will the car gain power or get better gas mileage?

Thanks for the help in advance.

sdaidoji

iTrader: (1)

Depending on state emission department, an engine older than the chassis could cause you problems.
check that first

sdaidoji

iTrader: (1)

tons of threads asking the same around.

search before asking

VAFC, etc.

D17VTECPOWER

iTrader: (1)

I understand that this is not a practical swap, I am just curious if it would work.

D17VTECPOWER

iTrader: (1)

I am not asking about how to make VTEC work, I stated that I wired a switch for it. I am asking if there would be a performance benefit to getting a VTEC ECU.

Wankenstein

Read reply #26 in this thread: https://www.hondacivicforum.com/foru...2-35930/page3/

D17VTECPOWER

iTrader: (1)

So even though the ECU plugs in, it won't work with the stock harness?

Wankenstein

I have no idea..I've never swapped those particular engines. However, that dude in that reply did and that's what he said.

ezone

Consult the instructions that come with the new cam.

DO IT NOW


It will be immediate.



I bet there is zero break in on the cam simply because the engine uses rollers on the cam followers.
Install it, adjust valve lash TO THE SPECS IN THE INSTRUCTIONS, then drive it like you stole it.

ezone

WHY?

Doesn't your car have a working ECM already?

D17VTECPOWER

iTrader: (1)

Thank you very much. One more question- Since the valve lash needs to be adjusted hot with this cam, what do I set the valve lash to so I can safely start it and warm it up? Thanks.

D17VTECPOWER

iTrader: (1)

The ECU is acting strangely. It is setting random codes, along with flashing the engine light with no misfire. The car is running fine, but I just want to change it before it completely fails and strands me. Since a JDM ECU is the same price as a USDM, I was just asking if I should go JDM.

Slumpertcivic

My guess would be similar MPG as the ECU will set itself to the octane level of US fuel.

JDM ecus are immobilizer programmed so you would still need to pay for a reflash

Only US part of a scan tool is the use of English..

Always best to match up exact part numbers when it comes to ECUs, if the JDM one is a exact part number match then yes it will be plug in simple .

D17VTECPOWER

iTrader: (1)

So I could gain a little power and MPG with a JDM ECU if I use 93 octane fuel? Or is the tune identical to a USDM ECU? Also, would the JDM ECU talk to a US scan tool in English? Would Honda even be able to flash a JDM ECU? Thanks.

5.0Thunder

They grind the base circle down to achieve a higher net lift value. It can be done, but at what cost? Aren't crowers cheap?

D17VTECPOWER

iTrader: (1)

I decided to just get a Crower Stage 1 cam.

xRiCeBoYx

iTrader: (22)

nope. do it cold. I contacted crower about it and they said cold despite saying hot on their site.

.006" intake and .008" exhaust for the stage 1 in case you need it

D17VTECPOWER

iTrader: (1)

Thank you for saving me from their confusing misinformation. Just curious- What would happen if I listened to Crower and adjusted the valves hot? Would I cause damage? Thanks.

sdaidoji

iTrader: (1)

to your hands if you are not careful. valve lash if off

ezone

I've worked with other brand cars that specified to adjust valves on a hot engine, but Hondas valves are adjusted when the engine is COLD. Cold being room temperature....At least Below 100*F

IDK why the Crower website would say to do it hot, unless someone just made a blanket statement without knowing the differences or didn't check out the actual instructions for these particular cars. Web designers and IT specialists are rarely "car people" so little details that matter a whole lot to us probably make very little sense or difference to them.

D17VTECPOWER

iTrader: (1)

I understand that K-Pro is a board that goes into the ECU, but what would the process be for getting it installed? Would I send my ECU to Hondata and the price of K-Pro includes installation, or would I buy the K-Pro and plug it into the ECU myself? Considering Hondata charges $675 for a cam gear that probably costs them $2 to make, $400 for D17 K-Pro to be able to tune my engine just seems too good to be true. “Only” $400 probably wouldn’t be enough of a ripoff for a tiny board for my ECU that probably was made in China and cost Hondata $3! So how does K-Pro work? Thanks.

GolNat

iTrader: (7)

$400 is if you send them an ECU. They add their unicorn blood magic bits and send the ecu back, you instal. Your paying for labor, software, Hondata guarantee and knowledge. I’m sure the circuit board they add does not cost much but someone engineered and designed the system, that costs money.

This is all explained on the website.

D17VTECPOWER

iTrader: (1)

Completely disregarding emissions, engine longevity, and fuel consumption, what is the best A/F ratio for power? I would think that theoretically, EXACTLY enough fuel to burn ALL the oxygen, but NO extra fuel(stoich)would make the most power. But since there is really no way to measure and regulate air and fuel flow that precisely, I would think that enough fuel to burn all the oxygen and have a little fuel left over after the combustion event, so slightly rich, like an A/F ratio of 14.4-14.5:1 would make the most power. But according to Engineering Explained, 12.5:1 is the ideal ratio for power. I am not sure why injecting so much more fuel than you can burn would make more power, but there must be a reason he said it. What do you think?

Colin42

https://en.wikipedia.org/wiki/Air-fuel_ratio

sdaidoji

iTrader: (1)

what cost is not the hardware, it's the software and what's within it and all the blood and flesh they left behind to test and make it work..

Wankenstein

Possibly, for peak power but avoiding a damaging lean burn?