Overfueling (Poor MPG)

[Big_daddy]

injectors
boost leak
coilpacks
fpr

 

[DaNnY_LaD]

My FPR is fine and no boost leaks...

Not sure about injectors...Should i replace the spark plugs with denson ik22 and new lambdas?

Mines a remap 20vt

 

[Big_daddy]

when were plugs last changed, have you exmanied ur current plugs?

 

[m0rk]

it can't be the lambda probes... or shouldn't be - they're narrow band & do nothing as soon as you're driving about. they're for MOT emissions only. (zero load)

new plugs (the right type), air filter, well serviced, fuel filter.

All the above assumes that the MAF & MAP are working correctly.

On our Ibiza cruising on the motorway we could get 350-380 miles / tank. a lot of it depends on driving style

 

[DaNnY_LaD]

ta Mork..

My Maf is a brand spanker...Just my plugs and map i think are old...ive got a audi tt map 20vt can i use that to see if that helps..gotta feeling my plugs are gonna need changing

 

[m0rk]

MAF's don't always work from new. well worth logging.

Also check for leaks or kinks in your pipework

 

[DaNnY_LaD]

Does stink abit when i 1st start it up in the morning..

 

[DaNnY_LaD]

Right i know this is an old thread

but am averageing 20mpg and am driving like a granny..Theres no boost leaks and the FPR is fine...

I do have a De-cat tho...But it was like this before i had it put on tho....

Its due a service so am guessin that could help it out,,

What else should i check? Is there any logs i can do..?

I done a maf one the other night and that was running/Reading spot on

 

[PhilW]

Any codes? What are your mods?

Have you done a brim to brim calculation? Personally i dont trust MPG displays in cars.

 

[Reuvers]

your decat will always smell slightly. There is no more cat on it, hence the fact you fail MOT without one.
It can increase you mpg slightly having this, but if I remeber correctly regular consumption should be around 35mpg? So then 20 is very low.

service will do it good: spark plugs and fuel filter is something which should be really changed regularly.

 

[Allen]

On a motorway run last night i was getting about 33mpg ish. Car is standard apart from a Green panel filter and was serviced 1k ago.

 

[Loko]

As Mork says, I regularly get 350miles out of a tank. That is driving 85% motorway @ 80mph and 15% pottering around town.

On a long run and sensible speeds the 1.8T is quite a good little engine, I quite comfortably get 36mpg average out of it.

Driving it fast and hard I get something nearer 26-28mpg so...

Don't thrash it everywhere!

 

[loveturbopower]

dont want to rub it in or anything but on sunday i managed to do 90 miles on a tenner, get in!! about 50 miles of that was doing 70 on motorway tho not going above 3000rpm, but then she did start feeling underpowered on my way to get petrol lol

 

[DaNnY_LaD]

I changed my driving style and i havnt killed it once and am getting 21mpg and my service indactor is flashin so gonna give it a service wen i get paid..

 

[ChrisCurzon]

read the faut codes on dannys today and these are what came up said would post them for danny not sure if anything to do with the overfueling maybe?

VAG-COM Version: Release 311.2-N

Control Module Part Number: 6K0 906 032 AB
Component and/or Version: 1.8L20VTCUPRA R 0001
Software Coding: 11500
Work Shop Code: WSC 00000
3 Faults Found:
17832 - Secondary Air Injection System: Bank 1: Leak Detected
P1424 - 35-00 - -
16804 - Catalyst System: Bank 1: Efficiency Below Threshold
P0420 - 35-00 - -
17965 - Charge Pressure Control: Positive Deviation
P1557 - 35-10 - - - Intermittent

 

[DaNnY_LaD]

What does that code thats to do with the lambda?

And is my N75 knackered?