406oc.co.uk

Hi guys,

Really enjoying my new (to me) 406 after giving it a good detail, and sorting out the MAF and ABS issues. However the stock 110bhp map is a little boring, it has good torque from 1500rpm until around 3300rpm, but then it runs out of puff.

I'm going to go for the standard 140bhp map, but I wanted to know how much better it feels after being remapped. Is there a wider torque band? And how does the greater bhp and torque help with overtaking at carrageway speeds?

I'm also doing an EGR delete, does this affect performance at all?

Interested in hearing your experiences!

Benjamin

Nobody?

It should be more responsive and more eager to deliver its power so overtaking should be better but you probably won't widen that power band by much.
The big difference will be less need to drop a gear as the increased torque will give you better acceleration in a higher gear.

EGR delete can give a few more horses as its not diverting gases from spinning the turbo but the big bonus there is not choking the engine with crap which takes away horse power.
As far as I can tell EGR's and intercoolers are a stupid combination as one cools air and the other heats up the air you've just cooled. Fill the intake with crap and the engine runs inefficiently and increases emissions. To me its similar to DPF's, a knee jerk reaction to emissions control that only works on new cars and has less and less effect as time goes on.

A new MAF will give better economy and improved responsiveness as the ECU can accurately calculate the fuelling, with a broken MAF its working on a 'best guess'. A working MAF is a must if you want to see any gains from the remap.

Awesome - sounds like its well worth doing then! The MAP sensor was replaced a few weeks back with an OE Siemens one, which made a massice difference to power and torque output, as well as its delivery.

I've also heard that deleting the EGR will prevent the oil from going black so quickly, as the combustion is much cleaner. Is that true?

fattail95 wrote:I've also heard that deleting the EGR will prevent the oil from going black so quickly, as the combustion is much cleaner. Is that true?

Yes.