Fish & Chips (Cosworth)

For my 2wd Sapphire Cosworth I have been looking for an aftermarket chip. I have picked up after skimming the net and reading various posts that there are 3 main stages people tend to go for.

The Ecu chips are tailored to match with your injectors , turbo , wastegate actuator, head modifications to port sizes, cams, and exhaust / intercooler combination.

Stage one is basically a plug in chip it involves you opening up the ecu and replacing it with a different ecu chip. You will also need to unbolt the wastegate actuator and replace it with an after market "-31" actuator. You can use the standard actuator rod and it is connected to the actuator in the turbo with a 'c' clip. The benefits you will get will be an increase in power, it will run higher boost, and may be more economical than the standard or earlier model ecu mappings as well. Power depends on what tuner you go with 270~hp is generally what you would expect. Generally most people upgrade the intercooler to a RS500 style one at the same time, sometimes new alloy radiator and exhaust. And generally also put in a GP A style coil. The chip when you purchase it will come with instructions. This should give you recommendations for adjusting the CO mixture screw , spark plug gap sizes, and fuel presure etc.

Stage two, is similiar to stage one with the addition of higher flow injectors, and either standard or upgraded turbo to T34. You also need to upgrade to a 3 bar map sensor, and different wastegate actuator.

Stage 3, is higher flow injectors and T34 turbo, 3 bar map sensor, and different wastegate actuator.

And so on for Stage 4,5...

Being on a tight budget and wanting reliability for my sapphire 2wd cosworth I am looking at a stage 1 chip for the L6 computer. I will also do the intercooler and actuator and group A coil at the same time.

It should be noted that with any chips you should have it professionally tuned on a rolling road etc. To ensure fueling is correct.

L1 and L6 chips can be swapped between ecu's apparently but none of the others.
http://passionford.com/forum/ford-sierra-sapphire-rs500-cosworth/300482-ecu-swap-l1-to-l6.html

The main suppliers that I could find that do aftermarket chips that had fairly good reviews were:

-Superchip
http://www.superchips.co.uk/newspage/23
-MSD
http://www.motorsport-developments.co.uk/rs_cosworth_ecu_chips.html
-Graham Goode GGR
http://www.grahamgoode.com/old/cosworth/ecu.htm
-Ahmed Bayjoo
(c/o/ Burtons) http://www.burtonpower.com/parts-by-brand/brands-a-to-b/burton-bayjoo-chips.html?appl_engine=18
-Collins Power Chip
http://www.collinsperformance.com/performance-package-deals-ford-escort-cosworth/

If you dont want to use a fixed mapped chip,maybe because you will be altering the setup constantly, live mapping of the Ecu's is available from the likes of this company 'rp-lab'. The main advantage of this other than an aftermarket Ecu (Link / megasquirt...) is that you do not need to alter your wiring loom, or sensors.
http://rp-lab.com/map_editor.shtml

All of the chip Ecu and stages information is outlined under Motorsports developments website. And Graham Goode Racing website.

http://www.motorsport-developments.co.uk/rs_cosworth_ecu_chips.html
http://www.grahamgoode.com/old/cosworth/ecu.htm


These screen grabs are straight out of Motorsport Developments website

L1 Ecu

 

L6 Ecu

 

 L8 Ecu

 P8 Ecu

 EEC IV Ecu