Exhaust light on after sports cat

[bendella]

Just had a piper exhaust sports cat on a mk5 gti ed30 centre box and tail pipe (no back box) fitted last week . Exhaust light on dash came on (amber) no flashing, not red just on. There is no lack of power and turbo kicks in fine, fuel consumption is the same. Had the light turned off by VW and the tech says there is no problem with the sensors and all he can put it down to is that it's a non standard exhaust. Drove for 3 days on the light is on again. Any suggestions on this as i have done some research online and seems to be a few who have had this issue.
Car is due mot in 2 weeks time and need to get fixed before then

[MAT ED30]

you need a remap to knock the light off

[bendella]

So as it stands will it pass an mot or do i need the remap for it to pass? I have also read about an oxygen simulator but can not find 1 online. Any thoughts on this? We also had a full milltek system on another ed30 and had no problem with light coming on.

When the guy at the workshop was removing the engine cover it was very tight and when he did remove it we noticed that 1 of the rubber grommets was damaged so now it has only 3 holding the cover on. I did read on another forum that the engine cover also works as an airbox but now its loose so i am not sure if this is sucking in air from the missing rubber grommet

[bacillus]

So as it stands will it pass an mot or do i need the remap for it to pass?

iirc the new mot rules stipulate that all warning lights at startup in the dash must extinguish themselves to pass.

When the guy at the workshop was removing the engine cover it was very tight and when he did remove it we noticed that 1 of the rubber grommets was damaged so now it has only 3 holding the cover on. I did read on another forum that the engine cover also works as an airbox but now its loose so i am not sure if this is sucking in air from the missing rubber grommet

A missing grommet will not cause sucking of air into the engine cover.

[bendella]

ok great thanks for quick reply, i have it booked in tomorrow and will post back if any result, might be usefull if someone else has a similar problem

[56OctyVRS]

You will find it is the sports cat raising the cel. I would get it tested for emissions to check the cat is working okay and its working correctly. I fear you will need to spend some money on a stage 2 map to get rid of the problem totally. Or you could contact a local car tuner who may be able to map it out on the standard map for you.

[martziniuk]

If you don't get it mapped out you could try a O2 spacer, the one with the right angle bend seems to work well. Failing that get a code reader/eraser and delete the code just before the MOT and hope it doesn't come back when it's tested.

[bendella]

If you don't get it mapped out you could try a O2 spacer, the one with the right angle bend seems to work well. Failing that get a code reader/eraser and delete the code just before the MOT and hope it doesn't come back when it's tested.

The light comes on after about 3 days when turned off and it's the 2nd time we turned it off. Now it's on and the car still runs fine.
I have read about an o2/oxygen simulator but can not find 1 locally or for that matter online. I have seen them on ebay US but i am trying to get this done asap as mot is due in 2 weeks

You will find it is the sports cat raising the cel. I would get it tested for emissions to check the cat is working okay and its working correctly. I fear you will need to spend some money on a stage 2 map to get rid of the problem totally. Or you could contact a local car tuner who may be able to map it out on the standard map for you.

With regards to a remap when you say standard would this not just erase when the car goes back to the dealer once they connect the computer up to it?
Don't mind spending the money but fear this may happen?

[muckipup]

If you don't get it mapped out you could try a O2 spacer, the one with the right angle bend seems to work well.

It seems to have had some success with Suburus having the same issue but it didn't work for me - the only way I could get rid of the rear O2 sensor triggering a CEL was getting it mapped out on a remap

[martziniuk]

I didn't think Shark could map yours out?
There are lots on EBay, the yanks have had success with them but I've never tried them.
My light comes on after about 3 days too when it's on stock map with decat.

[muckipup]

I didn't think Shark could map yours out?
There are lots on EBay, the yanks have had success with them but I've never tried them.
My light comes on after about 3 days too when it's on stock map with decat.

I think Shark has sorted it out now but we didn't get it sorted out when I was helping Ben devevop the Stage 2+ Shark map and then I eventually went with Revo for the KO4 conversion - Revo map this out from Stage 2 on as standard.

[bendella]

ok guys sorry for the late replies but took the car in today and had the vw tech take look at it. The light was still on so he suggested the best thing to do is to replace the nox sensor(done today) and also advised me to get the car remapped so this problem should not come up in the future. The exhaust light is now off and he also did an emissions test which passed. The car is booked in for an mot tomorrow so will update on that when done.

Now with regards to the remap, i have been doing some reading online and there are so many companies doing this, how do i know which best for the ed30?
Any help appreciated with regards to turbo overheating, uprated fuel pump and increase in bhp range, 300hp/350 etc

[56OctyVRS]

Most people on here with an ed30 say that stage 2 is enough and have run into problems when going stage 2+. However some have gone to the + stage and run fine. Most tuners offer good packages and I would suggest go to somewhere that is local to you in case you have any problems that need fixing.
The hpfp is always good to do even on standard cars. I am stage 2+ on a k03 and love the extra torque and power. If you arent chasing figures id stick with the oe engine cover as I found mine is much smoother to drive than when I had an intake fitted.

[bendella]

Good advice with regards to going local if any problems might occur, i am in East Yorkshire, North Humberside if anyone can recommend a company nearby that would be great. Also is the nox sensor an issue regarding exhaust system  changes as mine was changed yesterday. I had a complete miltek system on another ed30 and had no issues with emmisions light or sensors for that matter. The only difference was that there was no middle box on the miltek and on the piper i have now there is no back box but does have a middle box (if that makes sense)

[vRS_Pagey]

Strangely enough I fitted a Milltek dp with 200 cell sport cat which didn't cause a CEL, however after I had the stage 2 software it did!!

The map has since been tweaked and rather than the rear O2 sensor being completely flashed out, Mikko @ Shark as altered things just relating to the fault, which IMO is a far better approach.