Author Topic: Guide to Fitting Uprated ECU Chips (Calibra Turbo/C20LET)  (Read 14333 times)

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Offline Bad Kid

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Guide to Fitting Uprated ECU Chips (Calibra Turbo/C20LET)
« on: May 31, 2006, 11:19:04 AM »
Fitting aftermarket ECU chips is a proven method of gaining power and torque from your Calibra 4x4 Turbo. Boost and ignition maps are altered, rev limits raised and several other factors can be changed to improve power.

However, undertaking this task yourself has the potential to destroy the ECU if you aren't careful. Make sure you wear an anti-static wristband or earth yourself to part of the car.

This guide does not cover the removal of the ECU, but in brief, you must remove the trim panel to the right of the pedals. Disconnect the vacuum hose from the ECU, and undo 3 bolts to slide it out.
 

(Above) ECU removed from the car. Highlighted in yellow are the torx screws holding the ECU closed. (Below) is a picture of the torx screws being removed.



Next use a small flat-headed screwdriver or similar to squeeze under the metal tabs (highlighted below in red). Nudge these up slightly with the small screwdriver, then use a normal sized-screwdriver to properly bend them out of the way.



The metal case should now lift off to reveal the two ECU boards connected together. The chips you will be changing are in the middle, so they need separating. Note the boards are joined on one edge by a cream coloured ribbon, this must not be tampered with! You will unhook the opposite edge (long thick black bar) and pivot the ECU open on the ribbon.

Push the nylon tabs in around the edges of the board, to separate the two boards. There are small nylon pegs and legs that need pushing through the board to allow them to separate.



(Above) The ECU opened, pivoting on the ribbon. You can now see the stock chips that are to be replaced.

(Below) Stock chips in protective carriers, highlighted in yellow.



Open the protective carriers and remove them for the time being. Use a fine screwdriver to *gently* work the chips out of their slots. You must raise them evenly, so work around the chip and raise it in a uniform manner so as not to bend the legs. Make note of the orientation of the chips, there will be a cutout in one corner. This is important when fitting the new chips.



Handle the chips with care and make sure you are free of static.

Now you simpy press the new chips into place, in the correct orientation. Clip the carriers back on, reassemble the ECU and off you go!

I opted to simply plug the ECU in loosely and not bother to bolt it up until I had done a test run to confirm the car starts and runs correctly. Only then did I re-fit it. Now go and enjoy some high-boost action!
NURBURGRING CHALLENGE :-D

Salem

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Re: Guide to Fitting Uprated ECU Chips (Calibra Turbo/C20LET)
« Reply #1 on: November 01, 2006, 20:03:18 PM »
Nice guide, however i would suggest trying to remove the eprom with a screwdriver may be a tad on the risky side, the risk of damage to the board and chip are pretty high.

better to use an eprom/bios removal tool which is designed to lift and refit a chip vertically


You can get these from somewhere like maplins for less than a pound, a lot cheaper than a new chip or board.

S

CallyT

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Re: Guide to Fitting Uprated ECU Chips (Calibra Turbo/C20LET)
« Reply #2 on: November 01, 2006, 20:08:30 PM »
I used a 2ft prybar, still going strong 2 years later.

Salem

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Re: Guide to Fitting Uprated ECU Chips (Calibra Turbo/C20LET)
« Reply #3 on: November 01, 2006, 21:33:46 PM »
 :D

Offline conalnugent

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Re: Guide to Fitting Uprated ECU Chips (Calibra Turbo/C20LET)
« Reply #4 on: December 15, 2007, 17:35:07 PM »
I used a 2ft prybar, still going strong 2 years later.

lol
Theres no replacement for displacement.

Offline jeenous

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Re: Guide to Fitting Uprated ECU Chips (Calibra Turbo/C20LET)
« Reply #5 on: December 02, 2008, 09:03:04 AM »
im currently in process of fitting new chips to my computer.. im fittin eds phase 2.. and can someone please tell me which chip goes where on the board.. The ones on the board dont have B and D as someone else has told me..IF you could tell me based on the picture displayed above.. Left and right...

Offline Bad Kid

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Re: Guide to Fitting Uprated ECU Chips (Calibra Turbo/C20LET)
« Reply #6 on: December 02, 2008, 13:53:33 PM »
im currently in process of fitting new chips to my computer.. im fittin eds phase 2.. and can someone please tell me which chip goes where on the board.. The ones on the board dont have B and D as someone else has told me..IF you could tell me based on the picture displayed above.. Left and right...

B = Boden = "Ground" = The board on the right
D = Deckel = "Top" = The board on the left
NURBURGRING CHALLENGE :-D

Offline rich_LE_31

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Re: Guide to Fitting Uprated ECU Chips (Calibra Turbo/C20LET)
« Reply #7 on: August 18, 2009, 18:36:14 PM »
i cant sperate the board, i cant release it at the opersite end to the ribbon, help!
Saab powered vauxhall!!

Offline Bad Kid

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Re: Guide to Fitting Uprated ECU Chips (Calibra Turbo/C20LET)
« Reply #8 on: August 18, 2009, 20:33:12 PM »
i cant sperate the board, i cant release it at the opersite end to the ribbon, help!

Where the big black female plug is on the end of the ECU, there are two tabs either side of the pins... manipulate them.

It's a f*cking pain sometimes.
NURBURGRING CHALLENGE :-D

Offline rich_LE_31

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Re: Guide to Fitting Uprated ECU Chips (Calibra Turbo/C20LET)
« Reply #9 on: August 18, 2009, 22:36:00 PM »
thats what i'm doing but its bloody tight, don't want to damage it.
Saab powered vauxhall!!