ecu cooling upgrade chip.. where is it?
ecu cooling upgrade chip.. where is it?
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Discussion

neil0205

Original Poster:

443 posts

244 months

Sunday 28th May 2006
quotequote all
ive just purchased the cooling upgrade for the 4.2 cerb. ive only just bought this car and know very little about it.can anyone tell me where this chip goes?

spartacus

2,878 posts

299 months

Sunday 28th May 2006
quotequote all
neil0205 said:
ive just purchased the cooling upgrade for the 4.2 cerb. ive only just bought this car and know very little about it.can anyone tell me where this chip goes?


Passenger footwell in the middle of the bulkhead. Remove the carpet and underneath is a stiff plastic cover which protects the ECU box of tricks from passengers feet, remove that and you will see an ali cover with MBE written on it, remove the 4 cap screws and you will see the chips.

Word of warning, be VERY careful puting the new chip in, its very difficult to judge if you have located all the very fine pins in the mother board before you apply a considerable amount of pressure seat the new chip.

>> Edited by spartacus on Sunday 28th May 17:41

neil0205

Original Poster:

443 posts

244 months

Sunday 28th May 2006
quotequote all
thanks for the quick reply.i`m going to have a go now before i take it for a spin.

budaholic

1,516 posts

264 months

Sunday 28th May 2006
quotequote all
Also ensure the new chip goes in the same way round. There is a small 'D' shapeed mark on one end of the chip.

Bud

carl_w

10,740 posts

287 months

Sunday 28th May 2006
quotequote all
And be very careful not to bend the pins! I found that the pins needed to be splayed out a little more than how they came "out of the box" in order to fit into the holes correctly.

trackcar

6,453 posts

255 months

Sunday 28th May 2006
quotequote all
there's only 2 chips that are removable on the ecu board, one is marked NVRAM and the other (smaller) chip will have a sticky label on it .. it's the smaller chip with the label you need to replace.

Pull out the old chip being careful .. you can gently tease a very small flat bladed screwdriver under the end which is away from the ecu casing side .. go steadily but it will come out. You're supposed to earth yourself out to prevent static shocks on the chip .. but in 12 years I've never caused a chip any harm, but touch the car body before you start just in case maybe.
The D dimple end goes *away* from the casing side.

fit the new chip in place of the one you have just taken out. There is no messing about with the dealer diagnostics or anything, the fuelling is the asme as the std chip etc, the only changes are to the fan cut in and out temps, and the rpm at which they start to work (so they dont cut in on a hot start for example)

regards
joo

satman

2,455 posts

275 months

Sunday 28th May 2006
quotequote all
trackcar said:
You're supposed to earth yourself out to prevent static shocks on the chip .. but in 12 years I've never caused a chip any harm, but touch the car body before you start just in case maybe.
regards
joo


LMFAO....earth to a TVR body....

trackcar

6,453 posts

255 months

Sunday 28th May 2006
quotequote all
hehe. well anything conductive then

headcase

2,389 posts

246 months

Sunday 28th May 2006
quotequote all
Stick ya finger in the fag lighter!!! dont touch the middle bit though