mikgtir

Dear all,

I'm looking without success for a mod ECU for my H22A with 4WS (non SH) with N.A. mods.

Thanks a million, I' ve looked into the topics but didn't find.

Regards,

rhangman

You mean you want to tune, but keep your 4WS? Only option would be a piggyback. So basically eManage Ultimate or AEM F/IC, then you also have apexi VAFC-2, NEO, etc. with the eManage and F/IC being closest to a standalone in terms of features. For some light bolt ons, I'm sure a VAFC is fine though.

mikgtir

Thanks a million for the tip.

SoFlaLude

Do the 5G Preludes with 4WS have the 4WS ECU integrated into the engine ECU? I know that at least with the 4G Preludes, the 4WS system is controlled by an entirely independant ECU located behind the driver's side back seat.

__________________
1993 Prelude Si 4WS
2000 - 2001 Boston Crusaders contrabass

Prelude UK

5G Preludes with 4WS have a seperate controller unit in the boot on the driver's side.

__________________

29/05/2005 - Forever:
2000 Honda Prelude 2.2 VTi (H22A8 / BB8).

07/07/2001 - 22/01/2005:
1997 Honda Prelude 2.2 VTi (H22A5 / BB8).

28/08/1999 - 07/07/2001:
1992 Citroen ZX Volcane 2.0.

??/05/1999 - 28/09/1999:
1984 Ford Fiesta Poplar 1.0.

www.CARRisma.co.uk

rhangman

Is it independent though? Thought it hooked into the ECU/sensors like ATTS does? If I am wrong, then I guess you don't need a piggyback.

mikgtir

Thanks;

Anyone selling modified ECU's compatible with 4ws for H22A, BB8 chassis?

I'm getting crazy to find the best solution without ruining money and;or my engine.

May the VTEC be with us,

SoFlaLude

That's what I thought; you should be able to use whichever ECU you want, piggyback or otherwise (Chrome, Hondata, AEM, Neptune, etc.).

__________________
1993 Prelude Si 4WS
2000 - 2001 Boston Crusaders contrabass

mikgtir

Ok,

Then I will go for the piggy bag option.

I will leave you feedback afterwards, I have to wait to pass the annual control in Luxi, then install the piggy and will go to RACL to dyno test it (only 5 EUR) . The last part will be the rear exhaust, looking for a mugen at a decent price, not easy.

conjur

The 4ws module works exactly like the ATTS module, or the A/T Module in the 5g.

It has a couple of lines that go to the stock ECU.

I had an 01 BB8 shipped over from the UK; and ended up scrapping the project and parting the car due to the fact that the 4WS would never work without the stock ECU =/

I still have the 4ws chunks sitting up in michigan; and plan on deving my own control board for it; as the concept behind it is rather simple...

The 4WS primary controller (essentially a servo... or stepper motor..); and it is controlled by a mixture of the power steering pressure sensor, yaw sensor, and vehicle speed sensor.

I had a prototype board built for it; that's merely controlled by a pot, mounted in the car's center console (mainly for show); but deving a functional controller wouldn't be too difficult.. only real catch would be making a scalable table for it... I tried to run numbers, by datalogging how the stock one performed; but was never able to find a good slope for it...

Background: My original plan was; to incorporate 4WS, ATTS, and a built H22a4 w/a JRSC; into 1 car, running a p72+s300; to make the ultimate handling/short range accel car; but real life caught up to me.

I still have a couple of the asm files, and .bin's for PIC18F4550's to manually control 4ws somewhere here..

Ohh. last note: leaving 4WS unhooked is not a good idea... every now and again, it "twitches" while unplugged (think early 90's RC car steering, with the batteries dying)

__________________

1999 Prelude - Base Model, 99 Yukon SLT 4x4 -- Stuffs For Sale
RIP: 01 BB8, 97 BB614, 95 Intrepid, 88 Turbo Regal

mikgtir

Thanks!

So there is not a lot of solutions.. after all I' m 210 hp on dyno.. not very powerfull but I catch the gap cornering faster than the fat diesel turbo engines (tdi and so on).

I did not underdtood well, do you have a modified ecu for the 4ws? Working well for a N/A mod (as you already now for dure the 4ws BB8 were 185hp instead of 199 hp for the atts models "motegui" here in europe).

M.

Artifex

No, there is absolutely nothing than can tune a stock ECU, from any country.

The only possible way to keep your 4ws is to run a piggyback system.

__________________
I am not an active moderator on this site anymore. Please contact Phryxis or liquidxnitez for help with your issues.