2014 GU Fault Diagnosis

Quote:

Originally Posted by jack180

Interesting. I was getting about 16l/100 before i blocked the egr and fitted all the nads - no change. Then i fitted a new higher flow intercooler (just a cheap one from ebay) and a fan under the intercooler, and noticed a slight improvement.

But then i bought some MAF cleaner and gave my air flow sensor a really good clean - was always a bit worried to do this in case i stuffed it up.

Now im getting 13l/100. I do a mix of country and city stuff. If im doing just a long country run it drops to 11l/100

hmm interesting... the first thing I did was clean the MAF sensor, and I got a tiny bit of very very fine red residue come out, but this made no difference to fuel economy. I then blocked the EGR, installed catch can and snorkel, no other NADS and noticed a slight improvement in power, but economy stayed the same.
I'd be interested in seeing which intercooler and fan you got from ebay as I'm willing to give that a go if it's reasonably priced. I know ultimately a 2.75" or 3" exhaust will make the most diff but I don't mind trying small things like this.

Quote:

Originally Posted by Wildthing_507

Finally got the obdII reader and app. Light cleared by itself prior to that but when it came on again I cleared it with the torque pro app. Fuel economy seemed great after first doing the egr block but now that I've done accurate consumption figures it still sits around 12.5l/100k's.

The power's great but I expected to see some improvement in economy with the engine running so much more cleanly.

I put the chip back in also and contrary to all the claims from the supplier, the economy is worse. It's a little more powerful all be it subtle. It's definitely nicer to drive with the chip but I'm disappointed that the economy didn't improve. I know that I'm pumping more diesel in to achieve the extra power but what they said made sense also, that now the extra power was there that I wouldn't have to change down gears as much and that would increase the economy. They were right about the extra power down low and staying in a higher gear for longer but I was already 'driving miss Daisy' and so haven't gained, but lost about 0.5-1l/100k's.

I just finished a full main tank of 80L (from full to light coming on) and I drove the first half as normal 250Km out of 40L (16L/100Km), however I thought I try driving around with Overdrive Off for the second half of the tank. Boy what a difference that made to power as well as increase in fuel usage. On takeoff the car responds immediately and jumps out.. it's impressive, but I only got 200km out of the next 40L (20L/100Km).

I'm going to keep trying things out and see what if anything improves.