AdrianL Posted April 14, 2015 Posted April 14, 2015 Got the car MOT'ed and mapped today. Before map was 265bhp and after 293.8bhp so pretty happy! However they mentioned that both high flow cats are cracked. Is this a common issue for HFC's? or is it just the ones I have are crap? (no idea what brand). Not leaking yet fortunately but need to sort!. Cheers! Adrian Quote
GMballistic Posted April 14, 2015 Posted April 14, 2015 Do you still have the OEM Cat brace to support them or not? Just wondered if that might be what's caused them to crack where they have if you don't have the support. I'd say see if you can get them re-welded before the crack gets any worse. 1 Quote
AdrianL Posted April 14, 2015 Author Posted April 14, 2015 (edited) I don't unfortunately. I was thinking of getting the crack welded. Could a bracket be welded on? No idea if the original brace is on, I guess not. Edited April 14, 2015 by AdrianL Quote
kite 350 Posted April 15, 2015 Posted April 15, 2015 My kinnetix ones cracked a couple of years ago , the welds were very small just got them re welded had no problems since Quote
Keyser Posted April 15, 2015 Posted April 15, 2015 Not that common to crack them - but like anything it can and does happen. What Y pipe have you got? The ones without flexis put more vibration into the CATs. Get those welded ASAP they should be OK. Quote
-Bradders- Posted April 15, 2015 Posted April 15, 2015 what mods you got and where did you get it mapped? Quote
AdrianL Posted April 15, 2015 Author Posted April 15, 2015 (edited) Sweet. Will deffo find an exhaust place to weld them up Got it mapped at RS tuning in Leeds. Definitely happy with the gains!! Engine mods are: Injen air intake with kinetix upper plenum (filter is located behind front bumper) Borla high flow headers High flow cats HKS full stainless cat back Engine grounding kit Think that's it. It was running 265bhp before the map, so it lost a few horses over the years. Edited April 15, 2015 by AdrianL 1 Quote
spursmaddave Posted April 15, 2015 Posted April 15, 2015 Even Berks crack, I know from experience Sent from my iPhone using Tapatalk Quote
AdrianL Posted April 16, 2015 Author Posted April 16, 2015 Even Berks crack, I know from experience Sent from my iPhone using Tapatalk Decats? If so that supports the brace issue mentioned before Quote
spursmaddave Posted April 16, 2015 Posted April 16, 2015 Even Berks crack, I know from experience Sent from my iPhone using Tapatalk Decats? If so that supports the brace issue mentioned before HFCs and not sure, they cracked along the seam just like in your pic, got the, welded up and they were fine Quote
AdrianL Posted April 19, 2015 Author Posted April 19, 2015 Even Berks crack, I know from experience Sent from my iPhone using Tapatalk Decats? If so that supports the brace issue mentioned before HFCs and not sure, they cracked along the seam just like in your pic, got the, welded up and they were fine Thanks Well the bloody CEL came back on today!! Did a few shorter trips without a light after the remap, but did 75 miles this weekend on the motorway, and when I started it up again the CEL came back on after a bit. This time the code is P1273 - no other codes but that one. Could it be related to the crack in the welds? Quote
spursmaddave Posted April 19, 2015 Posted April 19, 2015 Even Berks crack, I know from experience Sent from my iPhone using Tapatalk Decats? If so that supports the brace issue mentioned before HFCs and not sure, they cracked along the seam just like in your pic, got the, welded up and they were fine Thanks Well the bloody CEL came back on today!! Did a few shorter trips without a light after the remap, but did 75 miles this weekend on the motorway, and when I started it up again the CEL came back on after a bit. This time the code is P1273 - no other codes but that one. Could it be related to the crack in the welds? Well my CEL came on now and again before I had the crack welded, once it was done I never saw it again Quote
AdrianL Posted April 19, 2015 Author Posted April 19, 2015 You don't remember what the code was do you? Quote
spursmaddave Posted April 19, 2015 Posted April 19, 2015 You don't remember what the code was do you? No sorry it was a long while ago Was something to do with the O2 sensors that's all I can remember which makes sense as the air flow was obviously affected Quote
AdrianL Posted April 20, 2015 Author Posted April 20, 2015 Hmm, the o2 sensor ones have gone thanks to the remap. I know the car isn't running lean as it was just mapped and the fueling looks fine on the graphs, so it must be the sensor? :S Quote
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