Hi all,

First of all apologies for a question prior to introduction but have been lurking for many years just never had anything constructive to say!

Just before christmas my other half bought me a "380bhp" MSD and a set of Siemens injectors for my 92 4wd Sapphire.

I fitted the chip and ran it for a while and was never overly impressed with the response off boost and it seemed to cough a bit when flat out, seeing as I don't really use the car much (300 miles in six months) so didn't fiddle with it until recently I checked the CO at work after it costing me over £50 to do a 210 mile round trip to Santapod for Central Day and the CO was @ 8.5% on idle.

I managed eventually to get the CO down to more sensible levels only to find that once the car had been left to cool down and restarted the CO would lean right out to 0.15% ish and then start to hunt.

So I then replaced all of the engine sensors including Crank, phase, ECT, ACT, coil pack, plugs, TPS, the ignition leads are no more than 1 year old and the MAP sensor appears to be working when reference checked with a multimeter, I have had the ecu out and tested the resistance of all the sensors with the engine off and then checked the sensor voltages when the engine is running.

I have pressure tested the inlet system etc to 3 bar and the only small leak I found was at the top of the idle control valve through the actual electrical plug but Stu advised me this was not uncommon and not to worry and it was very tiny and only apparant after 2.5 bar.

Stu has since sent me a recalibrated ECU file with revised idle fuelling but this has not cured the issue as it still gets richer the warmer it gets!!

Any help or input would be greatly appreciated, some have suggested ditching the MSD set up and getting one of the other tuners to map it etc but seeing as we have already paid for the MSD gear it makes no sense in spending more until this problem is cured.

Just for reference if I put back the old "Ahmed" chip and greens the CO is spot on after setting it up.

Any input would be gratefully appreciated as I'm utterly pissed off with the fact that I have spent 7 months restoring the car and now don't want to drive it for fear of washing the bores out because my car has a rather unhealthy appetite for petrol!

Cheers

Derek