tut4u2

PND and PRA are essentially the same; the former is from an automatic while the later is from a manual. I have a PND ECU but I'm running a PRB based
With PRA/PND, you are the stock S2000 upstream sensor for closed loop operation and fueling, while with PRB you are using a Honda Wideband, or an aftermarket wideband.

PM or Facebook message b.r.i.a.n. tuning, he might be able help you out with a remote map to get you started and idling correctly.

pizzai69

Thanks for your help. I did not understand everything about PND, PRA, PRB : I think it is above my skills

flanders

It's just a product code that tells you what kind of ECU it is.
They all come from k-series cars, like Civic Type-R (PRA) or RSX Type-S (PRB).

davidc1

I'd be more than happy to give you my tuning map from my '04 S2k. It has all the usual bolt-ons plus a SOS Stage 2 at 10-12psi. I don't know if it will help, but I will be tuning something within the next month or so. Contact me in about a month.

davidc1

I emailed Christian Dorner, the originator of the Doctronics about adding a TPS sensor for the VTEC window. Here is my email and his reply. Tell me what you think. (He seems to imply that the Hondata software does not have the TPS parameter either. Is this correct?).

My email:

Christian,
I have the ProECU-S2K and am very happy with it but for one thing.
Regarding the VTEC window....The S2000 is geared pretty tall, meaning it runs pretty high rpms, even in 6th gear on the highway.
It would be very useful to add a parameter for the TPS. As it is now, after tuning, the VTEC engagement rpm is usually around 4400rpm. That puts it at fast highway cruising speeds here in the US of about 120kph (75mph).
This means that it will switch to the high cam under partial throttle while just driving normally.
I believe most of the other tuning software out there (AEM, Hondata) contain a TPS sensor parameter for VTEC so that we can keep VTEC off unless we are above 50% throttle for example.
Could you please add a setting in the software for VTEC to include the TPS?
Thank you very much for producing this cool product.

__________________________________________________ ______________________

His reply:

Hi!

For this reason Honda has the VTEC window. When cruising (low TPS) you have a higher vacuum as when running on high load (mostly open TPS or running uphill). You just need to set the VTEC window with the desired parameters. Please see the attached image.
On high load (over 750mBar) the VTEC will activated at 4359 RPM (= rounded 4400).
On load load, i.e. cruising (below 300mBar) the VTEC will activated at 6363 (=rounded 6400).
On other loads between this two point the VTEC Window uses the other values of the Table. You can change all these values to your need.

Hondata uses the same on KPro, just with less parameters.
AEM i'm not sure, but i think they can switch by RPM, MAP and TPS.

If you still cannot get it to work, we can add a min TPS for VTEC, too. But usually (ok, supercharger can be different) the VTEC window is enough to set high load vs. cruising VTEC.


best regards,
Christian Dorner

pizzai69

That is very nice, thanks a lot. If necessary I will contact you later
Actually, I already have an AEM EMS V1 with a supercharged s2k map inside. At first, I wanted to use it and just take it to a pro to "re-tune" it on my car.
But I am interested in the Doctronic solution because I would like to keep OBD2 to pass the technical inspection every 2 year in France. The problems with it are:
- have to buy it
- have a tune from zero, and my tuner asks for a lot of money for that.

So if I can find a "supercharged s2k" basemap, that would sure help

flanders

Kmanager does not use TPS for the VTEC transition, it's MAP just like Doctronics seems to use.
MAP is usually the best solution and looking at the settings window it seems Doctronics have more than enough settings to achieve what most would need.
Wonder if tut4u2 has missed that VTEC window setting?

tut4u2

I adjusted the RPMs but neglected to adjust the MAP portion of the VTEC window; if I adjust the MAP as well that should take care of my issue.

pizzai69

Good news
But what about that:
Is this working for supercharged s2k or not ?

flanders

Supercharged or not, it wont be a problem.