Speed PHreak

As most everyone one knows Hondata is a main choice for most OBD-1 boosters in here. Right? For those of you who don't know, Zydne is THE standalone for non-OBD cars. Primarily 88-91 civics. The Zdyne's interface is very similar to that of the Hondata(from what i've heard i've never tuned on a hondata). SO it should be fairly easy to manually swap maps between the 2 correct?

The problem: Zdyne only provides base tunes for the D16A6, B16A, and ZC engines. No base tunes for the B18A/B are provided, tho zdyne will plug directly into a 90-91 LS.......In other words most of us LS hybrid guys or 90-91 LS guys are in the dark where base maps are concerned. We've got to 2 choices, fumble around with on of the other base maps or spend time on a dyno.

What i'm proposing to do is build a base map for an LS engine, from the base maps provided or tuned on a Hondata.

Does anyone know how I may be able to get ahold of the base timing and fueling curves for a Hondata LS tune? Perhaps some of my fellow H-T boosters woulf be will to provied some screen shots of the Hondata ROM software in action?

Please any help would be most apprecited by myself and many others.

~steven

Speed PHreak

The board is moving fast today, ^ bump

Honda Hick

BUMP cuz this would be some real helpful info. Damn Zdyne can't make a map for B18s....

93LSivic

I got a couple of base LS maps. But I dont know if they are good ones. Hit up racerxadam. He has the one that Sqt sent me on his hardrive--its the one thats currently running my hondata.

*Boostwerks*

I'm sure there are many people who have B18 map's with a Zdyne.

I personaly know someone with B20/B18C head using a Zdyne. I'll talk to him, and see what he is using.

sgT

looking at the zdyne program, it looks as though converting will take some time.
The zdyne shows fuel in injector pulsewidth, whereas hondata shows a numeric
value which doesnt look like it will be easily convertable.

Am I right in seeing that there is one map for both cams as opposed to one map
for each cam?

Armaan

Can't you use the Hondata on a 1991 Integra? You will need the P74 ECM and the harness....right?

dustin

91 integra has an obd0 harness. You'd need an obd0->obd1 harness, an obd1 distributor, and some wiring to make the 1wire o2 sensor work right.

Hondata

There are some fundimental differences.

Hondata systems all run dual maps for VTEC. Zdyne has only one.

The axes - load and RPM will have different steps. Ignition would probably be OK providing base timing is similar.

It would be faster to dyno tune.

Doug

sgT

dustin:you would convert to 4 wire o2 sensor.

doug: yeah, i was thinking the same thing

Armaan

Doug, is that all I need to run the Hondata with the OBD-0?

racerxadam

you have . let me know if that helps or if it doesn't work

dustin

I can't see why just running the 1 wire to the ECU would not work, as long as you ran a resistor between the heater wires to avoil a CEL.

sgT

i spose it would, but the ecu might wonder why its taking so long for the o2 to
warm up. or it might not.... <shrug>

dustin

Hehe, I don't think it's doing much with O2 feedback at that point (cold start). But alas, this is only conjecture..

Xerxes

there's an option in the romeditor to view estimated injector pulse width, so you could use this to try to translate from a hondata base map to a zdyne one. it would probably have to all be done by hand, but it shouldn't be that hard, just time consuming (2-3+ hours i'd guess)

-Xerxes

Speed PHreak

Thanx for all the support guys, I've gotten ahold of a Hondata map. I'm in the process of adapting the Igintion map over. It's kind of a tidious cell by cell process, but it'll work. The hard part will be converting fueling over. Personally I like the Zdyne pulsewidth system better than Hondata's. I'll post up in the morning when i'm done

Thanx much the Racerxadam for the .csv file.

Damn it's late


[Modified by Speed PHreak, 1:38 AM 5/31/2002]

marklamond

Feel free to shoot me down but can't you use a OBD0 PW0-000 ecu converted to Hondata in your car?

Be interesting to see the results anyway - you could make a spreadsheet to convert between the two perhaps?

IMHO I'd rather have a Hondata with datalogging over a Zdyne any day, tuning a Zdyne is like riding a bike without a saddle (who's not happy with Zdyne at the moment).

Speed PHreak

Perhaps, i'm not sure about Hondata. For the money I went with Zdyne. I've been pleased with it. Datalogging would be very nice and I heard that Zdyne was working on it . I'll admit tuning the Zdyne is somewhat a vague process without a dyno. I'm prolly going to be getting one of those DYI wideband deals.

I'm not sure, but I think you have to convert to OBD-1 electronics to run the the converted PW0/PR3 ECU's?

BeeT

I'm sorry but I'm trying to wrap my head around this. If I get a Zdyne (IF cuz I can never get a hold of the guy.. ever.. I've left him 3 messages) for my B18A, I will actually need to enter everything from scratch? There is not starting point that I can work with? Or am I reading this wrong?

Speed PHreak

Correct Zdyne does not come with a standard tune for the LS engine.

However, I've got a few tunes based around different engines for the LS. The one that i've using now is based off a ZC. I've got a few based on the D16. But I can hook you up if you need. They all work faily well, but I want the real deal. Thats why I started this thread. The newer LS ECU's supposedly had a bit better fuel/spark mapping. Hopefully I'll be done by the end of the day with this Hondata conversion. I'm having to do it all by hand so it's taking a bit.

UPADATE: Spark maps have been converted over. The fuel is taking a bit b/c i'm having to find a way to convert that blasted numbering system over to a usable format.....ugh math.

BeeT

Well, Good luck! I'll have to keep in contact with you when I get my zdyne.. or if I get my zdyne rather... hahaha..

Speed PHreak

UPDATE: After a long tedious session of number/formula crunching I believe I have achieved 90% completion!

SPARK -- DONE
FUEL -- DONE

All that is left is getting the idle values correct and then the tune should be done! I'm on my way home to test it out. Hope the better part of the workday that I spent on it will pay off!

Be back in a few hours guys!

SiR Kid

Howd it work man? I'm curious!

jetli6969

man you sure do work hard to get things done right ... to you