ok , see in other post i canīt use the k20a3 ECU ,so i need a K-PRO ,but if i heve a greddy e-manage ultimate...can i tuned the z3 using the stock ecu??

 

i dont know much about the greddy e-manage ultimate but if their is a limit because its a piggyback then you may have a problem but if its a full stand alone and you have alot of time and money to get it tuned then i dont see why you cant use it on a z3 even if its implanted into your ep3 ... just remember IM NOT completely sure though ... sorry

 

its better if you get kpro for the z3 swap and get tune. thats what i did when i did my z3 swap in my ep.

 

agreed and you will probably get more out of it, ive seem low out comes with the emanage (NOT emanage ultimate since i havent seen one in use) because greddy tends to side with the caution of error reducing the total hp gained while kpro will get you the best possible power outcome (i see no problem with that) ...

 

You really need to do a lot more research....look, the only thing that is the same with the k20a3 and k20z3 is the bore spacing and stroke length....thats it....2 completly different motors. No way in hell will you z3 run right with a ep3 ecu....btw, e manage is pretty much crap no matter how you judge it....get your stock ecu kproed, save your ep3 tb and use your stock ep3 wireing harness....the z3 is throddle and that does not work with kpro.

 

ok

so i have to use the a3 throttle??

 

yes, to the throttle body, If you use the z3 i/m you will need to trim your hood support as well. If you choose to use the ep3 i/m, you will have to deal with a coolent port.....

 

OK lets say for reference, using a EP3 what are your plug and play ecu options? I supose with the immobilizer the RSX-S ecu is out would the RSX-R ecu plug and play and run a Z3 swap in a EP?

 

No, it would not. At least not easily. :-)

When you consider the virtually infinite adjustability that is provided, I'd really consider a K20A2 or K20A(*R) + K-Pro before I considered a Z3.

Unless the Z3 fell into your lap for a very good price.

 

if you cant find a motor with an identical ecu then dont bother. at this point your best investment would be to get KPRO. you will be able to virtually use any ecu.

btw, why are you shooting for a z3 if you have the opportunity of a better faster motor?

 

Maybe I'm missing something, don't know a lot about the K yet. Isn't the Z3 Found in the 06+ Si the same as the A2 from the RSX-S aside from small differences?

 

K20a2 02-04 type s
k20z1 05-06 type s
k20z3 06+ si

 

if you want a civic Si motor look for a z3 or a3. Neither of these motors compare to the a2 or z1, only because those are the type S motors. The specifications between the Si's and the Type S' are a world of difference. From compression to transmission the Type S' (a2/z1) will out perform the Si's motors.

The fortunate part of this deal is that all of them will fit into any of the two applications (Civic Si or RSX).

Your job is to find out how much you want to invest into purchasing a motor. If you want a quick buy, I would suggest going for the z3 or a3, but that would mean you getting a brand new ecu, engine harness, and throttlebody if you were to go for the z3. for the a3 all you would need to do is drop the motor in and be on your way.

it is suggested to purchase kpro regardless because whether you switch between any of the motors your ecu will compensate for the change in motors by a click of a button..granted you have the necessary equipment to support the particular swap..


i hope i didnt confuse myself writing this

 

Just FYI but the 06+ Si engine the Z3 is world different for the A2 and the A3... Also compared the the Z1 which may have a little more power but the gearing of the tranny is different and also the Z3 tranny has an LSD!

 

its kind of depressing that the z3s are the only ones with LSDs

 

No the K20A also has an LSD

 

K20Z3
Displacement : 1998 cc+ Compression : 11.0:1+ Power: 197 bhp (147 kW) @ 7800 rpm (sae NET Rev 8/04)+ Torque: 139 lb·ft (189 N·m) @ 6200 rpm (sae NET Rev 8/04)+ Redline: 8000 rpm

K20A2 Displacement: 1998 cc+ Compression: 11.0:1+ Power: 200 hp (147 kW) @ 7400 rpm+ Torque: 142 ft·lbf (193 N·m) @ 6000 rpm+ Redline: 8200 rpm


I don't see the huge difference

 

Stock vs Stock, the Z3 will feel like it's the better driving car, with better immediate response to demands placed on the motor's torque curve.

The tuning is different in other ways, too, in that the Z3 can be adapted to drive-by-wire, and it is tuned to provide decent power while reducing emissions and providing better fuel economy across a range of driving conditions.

Because it is a relatively new motor designed for relatively specific purposes in a specific market, there are fewer tuning opportunities, and fewer tuners who can work with the stock equipment.

At this particular moment (September 2009), the K20A2 and K20A(*R) motors are more easily tuned and more easily adapted to swaps than are the K20Z1 and K20Z3 motors.

 

I don't understand what the difference is besides the DBW which would be eliminated in any car with a swap.

Is there any mechanical difference besides the throttle body?

 

mechanically there is no difference but electronically there is a difference

 

http://www.*************/forums/civi...0a2-k20z3.html

 

So one physically is NOT better than the other.

 

correct..but im pretty sure, one will be more expensive

 

Just trying to clear up the talk above that claims one is superior.

 

What you are actually talking about is the vehicle in which the Z3 engine comes in (06 and up civic Si) . The engine itself is not what is "tuned" to provide decent power while reducing emissions and providing reduced fuel economy. That's all in the ECU which I agree in that there are fewer tuners who can work with the stock equipment but not the actual engine, that is relative to the 06 and up civic. The Z3 engine is very similar to all the other K-series engines with "real" vtec. The main difference between all the "real" vtec k-series engines are the cam profiles and compression ratio. Besides that everything else comes down to intake manifold choice, bolt-ons and ecu tuning. Oh, and to the comment made by 'kpro dz' in all actuality there is NOT "a world of a difference" between the Z3 and the type S engines. So please when refering to the difference between the U.S. spec Si's, please make sure to specify between the K20A3 and the K20Z3 because the "world of a difference" is between the K20A3 engine and the rest of the honda K20 engines.