sti 6s ecu

[resurrection.inc]

have a version 3 sti with a 6s ecu

would like to remap (if possible) or chip, upgrade get a little more out of it

A. is it possible

B. who can do it

C. where and how muchie.....

thanks guys and gals

[Wiretap]

You won't be getting your 6S remapped any time soon, they're too old and require chipping, which nobody does anymore.

Grab yourself a Link G4 plug-in and have it tuned. There are other options but they're a lot harder work.

[resurrection.inc]

so without sounding like a cheap bastard but

what is the cheapest option for the ungrading of ecu or tuning side?

also where would i find the pin outs for the 6s ecu

[Wiretap]

 resurrection.inc said:

so without sounding like a cheap bastard but

what is the cheapest option for the ungrading of ecu or tuning side?

also where would i find the pin outs for the 6s ecu

The cheapest option is not to do it. Your initial base tune is going to cost you upwards of $600. Possibly as much as $1500 if you supply something non-running.

[rex-leggy]

a 6s will go hard . what boos are you running?

i have a v4 sti ecu in my single conversion an was able to safely turn the boost upto 18psi which made it go quite well.

in saying that timing is where the powers at ;D

[Wiretap]

 rex-leggy said:

a 6s will go hard . what boos are you running?

i have a v4 sti ecu in my single conversion an was able to safely turn the boost upto 18psi which made it go quite well.

in saying that timing is where the powers at ;D

I used to run a 6s on 21psi on an early WRX EJ20G in my BC5... That when combined with a TD05H was a unique experience, one nothing yet has matched

[resurrection.inc]

Ok so safe enough to crank some more boost into it its running 16 i think jus straight off wastegate spring. Wats the factory cutout?

[Wiretap]

 resurrection.inc said:

Ok so safe enough to crank some more boost into it its running 16 i think jus straight off wastegate spring. Wats the factory cutout?

I should mention that I used a MAF sensor interceptor to ensure I was getting appropriate fuel and timing for that much boost. Factory boost cut is 1.55bar, around 23psi.

Any increase in boost should result in you having your conditions (AFRs, knock levels) checked professionally to avoid damage.

And no, 16psi is not wastegate spring pressure, that's 8psi.

[resurrection.inc]

So double springed then!?

[Wiretap]

 resurrection.inc said:

So double springed then!?

WTF? No... Your ECU uses the boost-control solenoid to control the boost level...

[resurrection.inc]

So why does mine run 16 without anything else put in no boost controller.

[Wiretap]

 resurrection.inc said:

So why does mine run 16 without anything else put in no boost controller.

See above. Your ECU is controlling the boost, follow the hoses from your turbo.

[WRXONP]

he runs external with a hard spring - not the facto solenoid

6s is a great ecu - i ran upto 215 kw on 20 psi on stock 6s - fueling is sweet as long as u have a walbro with that much boost

facto boost cut is around 23 psi as i had mine on 22psi for a while - any more and it would cut

theres other areas where the power can be made before going into the ecus tune

[WRXONP]

and to be a little more factual - the 6s is NOT chippable - ver 1-2 bc5 are chippable (eprom chip)

the ver 3 ones are tunable - its trying to find a daghter board to suit and someone with the software to tune it

[Wiretap]

 WRXONP said:

and to be a little more factual - the 6s is NOT chippable - ver 1-2 bc5 are chippable (eprom chip)

the ver 3 ones are tunable - its trying to find a daghter board to suit and someone with the software to tune it

Don't post bullsh!t. Just because it doesn't have a chip socket on the board doesn't mean it is not chippable. The 'daughter board' you are referring to converts the 20x2 pin array on the board into either a 20x2 chip socket (if you can get a 27C256, which I doubt these days) or two 20x2 sockets plus a chip to interleave them. An ECU that is 'tunable' as opposed to being chipped means it can be re-tuned without the addition of any extra parts.

I stand by my thoughts on external wastegates, and if you want to run one that's fine, but don't expect me to just know about it.

[WRXONP]

sheesh - people reffer them as 2 seperate things - daughter boards and chips (eprom) -

no matter which way u look at it - even though your adding stuff to it - its still tunable

[Wiretap]

 WRXONP said:

sheesh - people reffer them as 2 seperate things - daughter boards and chips (eprom) -

no matter which way u look at it - even though your adding stuff to it - its still tunable

By that measure, A gen-1 legacy ECU is also tunable, because it can be chipped

[WRXONP]

i did say that didnt i !

they sure are tunable too - eprom emulator FTW

[lunchie]

V6 ECU is tunable using software similar to ECU TEK, just ring WRC developments or STM in wellington

[Wiretap]

 lunchie said:

V6 ECU is tunable using software similar to ECU TEK, just ring WRC developments or STM in wellington

We were only talking about pre-v5 ECUs, V5-onwards are all tunable but there's no 'open source' solution for anything prior to V7.

[resurrection.inc]

Yes thats right can fo wiring myself but i was only posting to see if the original ecu could be tuned and the verdict is no. So im quite happy to save up for a link. All this fuss for a simple q. Come on guys! Chill