boost69 Donating Members 737 Member For: 19y 6m 24d Posted 25/02/15 12:18 AM Share Posted 25/02/15 12:18 AM Guys,Does anyone know any definitive way you can test your cat to see if it's flowing like it should?Could symptoms of the increased back pressure on a stock BF XR6T be;4 psi peak boost pressure? (im assuming this is 1 or 2 psi off the stock figure)Occasional pinging?These are the symptoms I have experienced, and I'm thinking it could be an exhaust restriction problem...Have looked at boost and manifold leaks and apparently AFRs are within what's normal...How can I rule out a cat converter problem? Link to comment Share on other sites More sharing options...
Bizkets is Drunk? Too heavy needs boost Member 5,929 Member For: 11y 4m 7d Gender: Male Location: Adelaide Posted 25/02/15 12:29 AM Share Posted 25/02/15 12:29 AM Drop the cat and have a look through it. Link to comment Share on other sites More sharing options...
F6rspec3 Member 63 Member For: 11y 5m 12d Gender: Male Posted 25/02/15 05:47 AM Share Posted 25/02/15 05:47 AM Or temperature probe should only be 5-10 % different from front to back Link to comment Share on other sites More sharing options...
boost69 Donating Members 737 Member For: 19y 6m 24d Posted 25/02/15 10:46 PM Author Share Posted 25/02/15 10:46 PM (edited) Yeah I do have one of those infared thermometers...so you check pre and post cat...just running at idle?...or do you need to get some revs going... Edited 25/02/15 10:46 PM by boost69 Link to comment Share on other sites More sharing options...
Panda Eyes flame magnet Gold Donating Members 5,674 Member For: 16y 6m 27d Gender: Male Location: adelaide hills- 'race air' central Posted 26/02/15 07:08 AM Share Posted 26/02/15 07:08 AM I always found a good clean with a crowbar sorts it out... 6 Link to comment Share on other sites More sharing options...
wombatG6ET Bronze Donating Members 707 Member For: 12y 6m 1d Gender: Male Location: cherrybrook Posted 26/02/15 07:16 AM Share Posted 26/02/15 07:16 AM When I was working at Ford, the ED XR8's had a problem with the cat's blocking at taking all the power out of the carSo we put the car on the hoist unbolted the exhaust in front of the cat, tie wire it up out of the wayand go for a spin around castle hill if the car went a lot better the cat was replaced It was loud and it was fun 1 Link to comment Share on other sites More sharing options...
F6rspec3 Member 63 Member For: 11y 5m 12d Gender: Male Posted 26/02/15 07:23 AM Share Posted 26/02/15 07:23 AM Just idle Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 6m 12d Gender: Male Location: Adelaide Posted 26/02/15 07:28 AM Share Posted 26/02/15 07:28 AM Throw it in the binIf it jumps out its good If it doesn't it was knackered :D 3 Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 8m 13d Gender: Male Posted 26/02/15 11:30 AM Share Posted 26/02/15 11:30 AM This is when you need one of those optic fibre borescopes to help see the cat core. You can then easily tell whether it is your problem or not by looking at it. Link to comment Share on other sites More sharing options...
boost69 Donating Members 737 Member For: 19y 6m 24d Posted 27/02/15 12:01 AM Author Share Posted 27/02/15 12:01 AM Lol...I actually have one of those telescopic camera things hmmm... Link to comment Share on other sites More sharing options...
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