All Things Mk5 > Performance Modifications
Decat DP - GT PD140
vRS_Pagey:
--- Quote from: ianc1990 on September 06, 2011, 10:38:30 pm ---It was just a custom stainless steel pipe.
The cat was cut out and the pipe welded in place....rather then a full downpipe but its essentially the same thing! (unless you get bigger downpipe but this still doesnt cause a failure in MOT)
--- End quote ---
This was also an option I looked at for the vRS, but like Sy and Hurdy did, I would have the delete pipe and cat fitted with flanges so they could be changed with ease at MOT time. Obviously with this not being an issue on the Golf, I may get my mechanic to do it when he fits the new back box. :happy2:
Am I right in thinking this will effectively take the car to stage 2 (as with petrol) and as such will require a modification to the remap to eliminate CEL for lamba sensors etc??
four!:
Hi mate,
The basic diesel emissions test involves testing the amount of smoke not co, often by shining a light through it and measuring what makes it through.
The de cat shouldnt put any lights on as its not a proper closed loop system and has nothing to monitor the other side. eg petrol appliations the first sensor makes sure the lambda is good and the second, after the cat checks the cat has done its job. If you see what I mean :happy2:
Im also thinking of the decat for my gt. I have come across 2 off the shelf options, milltek or THS. The milltek is left 63.5mm at the end wheras the THS includes adaptors to take it down to the 2 available sizes of centre section if need be. The THS is significantly cheaper and quality looks just as good but nowhere has any :surprised:
TBH I doubt there is much changed on the map for this. Maybe a good question for your mapper, I also wouldn't mind knowing what they change.
vRS_Pagey:
Thanks for that mate, I will fire off the question to my tuner later and give you the heads up on the response. If you come across a supplier for the THS De-cat let me know, and out of interest what sort of money are we talking?
daz_pd:
also interested in that info!
four!:
THS all seem to be £145 but can't find anywhwere which has any stock :sad1:
http://www.thsperformance.co.uk/category/Downpipes_Decats,b.html
Cheapest I have found on Milltek is from jabba sport.
http://www.jabbasport.com/store/index.php?app=gbu0&ns=prodshow&ref=MSAU282
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