ECU set up?

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Tue Nov 25, 2014 1:54 pm

I think this thread should be moved to the wiki!

Supercharged 無限MUGEN BB1 Profile · Post by **nucleustylzlude** » Tue Nov 25, 2014 2:32 pm

Some good info replied already.

To save me repeating myself, my tuning write up in my build thread:

http://www.ludegeneration.co.uk/post1911.html#p1911

Therealjj91 · Post by **Therealjj91** » Tue Nov 25, 2014 2:57 pm

Cheers mate I just read through it all but couldn't find anything about having different resistors or alternator?

Post by **Vtecmec** » Tue Nov 25, 2014 3:37 pm

I think the OBD 1 switch will require 4th gen injectors, injector loom (different connectors) and the resistor box to work properly.

Therealjj91 · Post by **Therealjj91** » Tue Nov 25, 2014 3:40 pm

So will the ATR injectors work if I got the injector loom and resistor box off a 4g?

Post by **Vtecmec** » Tue Nov 25, 2014 4:02 pm

Are ATR OBD 2 (saturated) rather than the peak and hold? If so then I doubt it, but I am no expert.

Some more info here: http://honda-tech.com/honda-prelude-4/r ... n-2196354/

Therealjj91 · Post by **Therealjj91** » Tue Nov 25, 2014 4:44 pm

Oh my days! Why does EVERYTHING have to be sooo complicated! Haha so it'd be easier to just a buy a set of 4g injectors and the rest and change out the ones in the ATR fuel rail? Is it hard to do any of this? Go from a car with saturated injectors to peak & hold?

mercutio · Post by **mercutio** » Tue Nov 25, 2014 10:00 pm

if you go to peak and hold you need the resister box

Supercharged 無限MUGEN BB1 Profile · Post by **nucleustylzlude** » Thu Nov 27, 2014 2:51 pm

Therealjj91 wrote:Cheers mate I just read through it all but couldn't find anything about having different resistors or alternator?

??? Who mentioned alternator?

Right this thread is getting confusing now.

I understood your plan was to buy an OBD1 ECU (be it P28, 72, 30, 06, the list goes on to be honest) and a Hondata S300 to enable you to have a tunable ECU to run all your modifications correctly?

If that's the case, why is everyone mentioning changing dizzys and injectors, this isn't an engine swap. All you should need is the conversion harness as this will direct the correct wire for each sensor into the correct location to enable the S300 to be tuned. You can input the injectors settings in the software.

@Lude-dude has an S300 on his modified 5th gen engine - can you confirm this please.

So you should just need the Hondata S300 and modified ECU to accept the S300 (£577 - H-Tune), conversion harness (£79 from H-Tune - http://h-tune.co.uk/rywire-obd2a-obd1-e ... rness.html ) and then some cash for someone to tune it (£300-400ish depending on where you go).

Cheers,

Rob

Post by **Merlin** » Thu Nov 27, 2014 3:06 pm

nucleustylzlude wrote:??? Who mentioned alternator?

It was me, initially got confused with distributor and changed my post.