BlakxrT New Member 6 Member For: 9y 3m 17d Gender: Male Location: Melbourne Posted 21/09/15 12:23 AM Share Posted 21/09/15 12:23 AM (edited) I posted a reply to this subject in a previous thread but have had no reply so here's my issue if anyone can kindly help. Need to change catalytic on stock twin, sounding sh*t-house when cold. Is it a must to have it tuned if changing it? An exhaust guy in rowville thinks hes had no issues changing the cat on other ba turbs but I beg to differ.Changing from a 400c (factory) to 200c would make some difference I would think but how much? Can't have it boosting over 10psi yet, turbo has play. Excuse any ignorance, dont know sh*t about mechanics. Edited 21/09/15 12:28 AM by BlakxrT 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 21/09/15 03:10 AM Share Posted 21/09/15 03:10 AM With a 200cell aftermarket cat you would be very close in getting away with it but you will soon find out Best way is to either go a nice hi flow unit and a tune to suit or go like for like and have no tune issues 1 Link to comment Share on other sites More sharing options...
BlakxrT New Member 6 Member For: 9y 3m 17d Gender: Male Location: Melbourne Posted 30/10/15 11:06 PM Author Share Posted 30/10/15 11:06 PM Cheers, see how goes... Link to comment Share on other sites More sharing options...
El Andrew Gold Donating Members 2,036 Member For: 9y 7m 21d Gender: Male Location: Canberra ACT Posted 31/10/15 04:37 AM Share Posted 31/10/15 04:37 AM Might be your lucky day - I'm picking my stock BA up in about an hour - new turbo core and a high flow cat being fitted. I'll let you know... Mind you it just started to rain so WOT testing might be difficult. 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 31/10/15 04:49 AM Share Posted 31/10/15 04:49 AM You will know fairly quickly if it hits boost cut Link to comment Share on other sites More sharing options...
_Velocity_ Bronze Donating Members 2,768 Member For: 13y 7m 18d Gender: Male Location: Victoria Posted 31/10/15 06:37 AM Share Posted 31/10/15 06:37 AM Go to FTG Auto Salvage. They are just off Burwood Hwy. They'll have second hand ones that will bolt straight on. Link to comment Share on other sites More sharing options...
El Andrew Gold Donating Members 2,036 Member For: 9y 7m 21d Gender: Male Location: Canberra ACT Posted 31/10/15 08:07 AM Share Posted 31/10/15 08:07 AM So far so good with 100 cell. I'll let you know after a week once I've treated it nicely for a few hundred km and then found a dry road. Link to comment Share on other sites More sharing options...
Lennox Member 2,586 Member For: 11y 9m 17d Gender: Male Location: Perth Posted 31/10/15 10:06 AM Share Posted 31/10/15 10:06 AM Have you floored it yet? I did with a mk2 fg cat with no restrictor ring and plaz 800hp intercooler kit without a tune and it was fine. That cat was probably more restrictive than a 100 cell though Link to comment Share on other sites More sharing options...
El Andrew Gold Donating Members 2,036 Member For: 9y 7m 21d Gender: Male Location: Canberra ACT Posted 31/10/15 09:27 PM Share Posted 31/10/15 09:27 PM Not flat chat, but enough for the boost gauge to hit its usual high water mark Link to comment Share on other sites More sharing options...
El Andrew Gold Donating Members 2,036 Member For: 9y 7m 21d Gender: Male Location: Canberra ACT Posted 06/11/15 07:26 AM Share Posted 06/11/15 07:26 AM BlakxrT - a week in and mine seems fine. No over boost issues when flat chat. Other than the cat, everything else is stock... Except for the Fairlane interior door handles. Anyone know if I need a tune for those? Link to comment Share on other sites More sharing options...
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