deliverydriver69

iTrader: (1)

hi guys i wonder if you can help me had my car remapped 2 weeks ago and all was fine until i filled her up with shell v power fuel and it seems from there i got this problem car was remapped with tesco momentom petrol as i don't see any diff between the two only the price lol, mapper advice me to use shell so i did drove down the road and the engine mangerment light came on, spoke to mapper and he said possible o2 sensor on exhaust took it to him to reset. got the code from his laptop but didn't no what the code stood for and said he needed it look it up but reset and said i should be fine now the code was in bay 1 what ever that is????? drove it yesterday and only driving 40 miles an hour and it comes on again borrowed a mates car diagnostic tool and it brought this code P0420 up, can any body tell me what it means as i don't want to keep driving the car if there's any possabiltiy that i doing damage to the engine OR ANY ADVICE would be grateful i'm driving a wrx sti 04 blobeye

Steve's Sti

iTrader: (2)

P0420 means you need to drive it harder as mines pops up when i drive it like a sissy, you got decat or sports cat?

*matthewturb2000*

iTrader: (11)

i get a occasional check engine light come up only when poodling along at low revs,mines decated 3inch turbo back, sorry to jump on your thread

deliverydriver69

iTrader: (1)

Hi Steve, well when ur driving in heavy traffic at low speed it's hard to drive her hard unless I want to right her off and end up in hospital lol, yep decat from turbo back 3in all the way through,

Steve's Sti

iTrader: (2)

Not so good like mines pops up seldom now i just make sure it gets a heat up and its fine, maybe just sit at every junction full revs lol

Midlife......

iTrader: (2)

P0420 is the code for a cat below efficiency....... Means you have removed the cats or the rear 02 sensor has broken.

Either way it should have been mapped out by your mapper......

Not really a topic for discussion here and it's back to your mapper to sort.

Shaun

deliverydriver69

iTrader: (1)

Thanks Shaun, going back to him tonight, after lots of miss calls, emails n texts he's got back to me, I'm starting to think was it all worth it????? If this is going to keep happing!!!

Milos1

Who mapped it? Having my 05 sti done tomorrow

deliverydriver69

iTrader: (1)

Hi mate had it done by a guy out in ware Herts, found out today tht it's the 02 sensor under the drivers side wheel needs to be change for a high performance one then all should be good

*matthewturb2000*

iTrader: (11)

Can you pm me a company name I'm looking for a local ish mapper,have they got rolling road for the print out

Jolly Green Monster

iTrader: (4)

Complete rubbish or you have misunderstood what has been said.

There should be no need for any parts to resolve this issue, all done on the laptop.

I dont see explaining further as clearly the place who have done it dont know imho.

Simon

Midlife......

iTrader: (2)

I think "complete rubbish" is somewhat of an understatement JGM................ Words fail me on trying to answer post number 9.

Shaun

rob84

iTrader: (5)

P0420 usually gets mapped out on a decat.

No such thing as a high performance AFR sensor, The subaru one does the job just fine unless running an aftermarket ecu like syvecs which uses a wideband

Midlife......

iTrader: (2)

Hi Rob

I think SP's are looking at our Citroen tomorrow......... only a few hundred horsepower down on yours LOL

Shaun

Jolly Green Monster

iTrader: (4)

I was trying to be careful as a trader is easy to come across as sour.

Serious OP this needs looking at by someone that knows subaru's.

Simon

Midlife......

iTrader: (2)

JGM........having been on this forum for more years than I care to think of (ten years?) I have never found you anything other than the consummate professional

Shaun

Jolly Green Monster

iTrader: (4)

Shhhh people will think we are old

Simon

rob84

iTrader: (5)

Indeed I did Shaun, quite a few hundred down on mine I think but still drives well

Gear Head

iTrader: (2)

If that is actually what he said then please name and shame as that is just him trying to con more money out of you. I'm surprised he didn't offer you a £100 gold HDMI lead!

As Simon says, take it as a lesson and put your car in the hands of an Impreza expert.

Buy cheap.....buy twice!