Printable View
hold on! page 1 you were saying that an off-the-shelf chip is capable of PROPERLY tuning a crvtec when in fact it'll only make the motors' life shorter; do you not agree with this? Will you not agree that Hondata is capable (with the proper tuning) of tuning this setup much better than a chipped ECU? Im very interested to know from your experience as well as Im eager to learn (not being sarcastic) :)Quote:
Originally Posted by pornstar
Proper tuning doesnt mean what tools ur using Latino. Its the tuner who tunes the equipment. For example, if u know that a motor is running lean say at 16:1 A/F ratio, for arguments sake, then leaving it at that while its pinging would be ignorable and poor tuning. Even if u had a motec, u could blow ur engine if the tuning is not done properly.
Setanta, Im not being sarcastic etc, i merely asked a question so what am i quitting behind about? I saw these 2 CRVTEC conversions have cracks appear in the block, and one the sleeves were abosultely scored. Yes Chucks motor worked, but having said that I already acknowledged that I was incorrect about it being a daily driver. I dont doubt ALLMTR the car or the engine, but from the CRVTECS that I've seen done, the sleeves and block were qeak. One thing I should have asked is which B20 bottom end the ALLMTR civic is running, since both the prelude bottom end and the CRV bottom end can be used.
I've never professed to know it all, and Im sorry if I came across like that, but if ur willing to share ur knowledge id only be too happy to learn. I've been down the NA path but its costly and it didnt net me the times that I was happy with. I've pm'ed chuck a few times before about some advice, and I dont doubt what he knows.
Anyways, think of me as what u will but i am only trying to help by letting people know of my own experiences. I apologise if I crossed the border.
I was a young guy that used to piss people off because I asked too many questions but that was 25 years ago so pornstar you are not bothering me at all the only reason I joined the forums was to read what is said and maybe to give some of my knowledge to you all but when I see stuff posted that I have tried and tested and know what works and what does not only because something was missed to save a dollar or get it going faster so they can drive it to work the next day then I'm bothered.Now that is why I have been thinking about a car for myself since I met ALLMTR 18 months ago because we both share the same passion about N/A powered cars so I am taking over where he left off with the B20B Vtec engine out of his civic and beleave me it will make alot more power very soon.
Regards Dyno Dave
yeah i know dynodave, but think u can work on da grammer abit? fullstopsd and punctuation really helps in reading...
but can u tell me if chucks motor for the b20 si the prelude b20 or the crv b20? cos i understand that there is differences in the motors. The CRVTECS that we did were not professional mechanics, so i dont doubt we probably made a mistake. But its just that it seemed like u were having a go at me as if i had said i knew everything. I lonly mentioned the 2 cars that we did.
anyways i dont really care, as isaid think of me as what u will, but im a person that works from home, helps with motors building and tearing etc etc, all for free, all for the sport and hobby of it. Thast why i told people the things i did and what i didnt do, wrong or right, its just experiences of what i know.
thanks for your reply pornstar but it seems to me that you're just stating the obvious with your reply to my question above; please note that I worte PROPER TUNING making it clear that if Hondata or a chipped ECU are both used and tuned (on a high compression motor) PROPERLY BY A PROFFESIONAL then which device will give the more benefits?
thanks
OK Latino, in my Experience, and it might not be the case for what everyone says, I'll tell you what i think.
The ability to control the engine and other running conditions is ultimately the ability of the ECU. The piggy backs merely act as intercepters, thus the external parameters that are inherent in the engine are retained, and it merely Fools those sensor signals before it reaches the Factory ECU.
If the modifications to your engine dont need you to control anything outside of those parameters, then a piggyback can be used and be used reliably. Granted that it wont be as good of a tuning tool, ie fuel economy in certain cases due to limited RPM tuning, Ignition mapping in certain piggybacks if at all, the list goes on. But if u can get something to work in those parameters then yes a piggyback can be used.
The reason that the unichip was used in the above conversions that we did was that the owner did not have the funs for a full computer like the Autronic or Motec. So to get it running and reliable, we used a unichip. Fuel economy is not the best, the unichip tuning points are not that good, and ignition control is not that good, but its enough to get it running and working fine. After more mods the owner intends to change to a full Autronic SMC.
I hope that helps u in ur ecu choice... PErhaps DynoDave or Chuck can better help you with NA tips.
You do realise though that Hondata is simply a chipped ECU, ie a socket added to the standard ECU, with a new ROM burnt to en EEPROM chip. Just like those "Mugen" chips you can buy on eBay, except properly tuned for each application.Quote:
Originally Posted by LatinoHatchCrap
So a chipped ECU if tuned the same can basically give identical performance. Even launch control, full throttle shifting and the like. Real time programmability is just about ready as well using freely available editors.
If you are talking about things like Unichip though (rather than saying chipped ECU, interceptor or piggyback is the right terminology), then as pornstar said such an interceptor is limited by its tuning resolution etc and there will be compromises. But it can still run a setup reliably as long as the tuner is half-decent
great thread guys ???
my B20VTEC has been going for over 25'000km - i built it myself in my garage (then chuck built his!)
redlined daily...
only has ARP rod bolts and headstuds... stock crank, rods, pistons (reliefs enlarged)
oh - and STOCK ecu with V-AFC,
making 109kW (3kW less than the most powerful K series R at the dyno day)
it would make a shitload more if it had a proper programable ecu too...
tinker, is urs the prelude or the crv bottom end?
CRV
isn;t it??
thats what dad told me.. I didn't think an old skool B20A would fit the B16 heads... i might be wrong though
NO-ONE uses prelude bottom ends pornstar...
only crazy japs... but then it is only the big crank they use, not the block...
I think he meant the B20A block from the 2nd (JDM ONLY) and 3rd gen preludes...Quote:
Originally Posted by tinkerbell