I dont understand the colour codes on the ecu.

ive seen a series 1, red, blue, red, What does that mean. whats the difference between them all?

Cheers

 

S1 85 spec is Blue red Blue.
S2 86 spec is Blue red white.
S2 88 spec is Blue red black.
S2 90 spec is Hearts hash diamonds.

Nothing more than a way to distinguish between different type of ECU's. They were also used on Sierras as electronic ignition modules with carb control but they were different colours again.

 

I got a series 2, wud it matter which ecu i get. I need to get one with unlimited boost.

 

All standard ECUs have a boost limit, think its somewhere around 10psi

 

why dont you just get yours chipped?

 

it is mate. i got a ahmed bayjoo chip. But their pants! i need a unlimted boost chip.

 

well ive got an 88 spec car but with a 90 spec ecu in it! probably getting a series 1 ecu though and doing away with knock sensor!

 

why is it better not having a knock sensor?

 

you can still get your ecu chipped again using a different chip!

 

if your head on the turbo is getting quite rattly the ecu thinks its the car knocking so it cuts the boost back!


Maxxeh: why do you need an unlimited boost chip? its better to have something mapped to your car's spec!

 

a knock sensor retards the ignition to prevent detonation

 

In the event of knock happening...........but cam rattle cam also cause ignition retard.

 

thats wats its doing at the moment. Its retarding the inginiton. Apparently im loosing like 20+ bhp.

 

You've got 2 options.

You can either use a Series 1 ECU which doesn't have the input for the knock sensor, or you could plug in a knock sensor and tuck it up out of the way.

Its important to have the sensor plugged in if you are using a ECU that has an input for a knock sensor otherwise it will still also retard the timing.

 

ill probs go for a s1 ecu.