Do I have the correct chip in my ECU?

[edhorne]

Hi

Just a thought; the mechanic who did my tappets reckoned I had a later chip in my ECU.

As my car is an early 1996 with the early cams (which he confirmed) would the later chip have its map optimised for the later "quieter" cams? I understand their profile was different.

Therefore would my car be better off with the earlier chip?

Maybe I am better off with the later one for starter motor purposes etc.

Any thoughts greatly received.

Cheers

Ed

PS I will have a look in a mo and see what is written on the chip.

[edhorne]

Hi guys

My chip says:

4.2 V35

Anyone know whether or not this is the best chip to use with the "clatter" cams?

Cheers

Ed

[Olly]

I'll check mine when I get home in the morning & report back.

(I'm working nights at the moment)

[Dave 500]

Don't know if its any help but I've got my old chip in front of me and its got 33B986 on it. Is from a 2002 4.5

[trackcar]

i've compared a few early and late chips for the 4.2 and as far as the fuel and ignition maps are concerned i haven't yet found any chips which differ. so you can keep your late chip with your early cams, an earlier chip will not make any difference to hp or driveability from what I have seen so far.

[edhorne]

Thanks trackcar. It was just a thought.

Cheers

Ed