i recently had my car mot'd but had a problem with the emissions test its a my95 wrx, ive got a tsl group n back box & tsl centre section,orignal downpipe with cat still in tact & running a polar performance chip any ideas chaps?

 

hi mate

i run a 99 turbo with tsl group n back box and decat center section with original cat downpipe and just passed mot with co at 0.120 . could the cat be damaged ?

just put a 3" decat on today so i think she would fail now

 

just curious as to why, i dont think its a problem with my cat as my mates also failed at the same place & hes got same set setup as me minus the polar chip, mine does seem to be running abit rich with this chip fitted

 

The chip will run a little richer than a std ECU, but I wouldn't think it'll be a problem... that is, ASSUMING your plugs, coilpacks and Lambda sensor are all working fine!...

 

ive got 3 brand new coil packs replacing the 4th this month & have all new plugs replaced in the last couple of months maybe worth replacing the lamba sensor now like you say, where abouts can these be got from mate? the chip was brought second hand & was sold as a polar performance chip,the guy seemed genuine but you never know could have a dodgy ebay chip in there, is there a way of knowing i have pictures if scott t could put my mind at rest?

 

you say its not a prob as you got a freindly mot guy but if it fails on the computer hows he got around that cos VOSA will see hes issued you with a cert but failed the emisions ????