Hotxrturbo6 Member 25 Member For: 9y 8m 21d Posted 28/07/16 03:10 AM Share Posted 28/07/16 03:10 AM Hey guys I have a ba xr6 turbo ute and I'm needing some advice on what size exhaust to put in I'm not chasing any big power but it's also good to know I have the option later on I have been offered a herrod exhaust twin 2.5" second hand stainless or a 3" dump pipe back exhaust not sure what the difference is or what's gonna flow better and give me a bit of room up my sleeve in case I ever want more power thanks and look forward to hearing from you Link to comment Share on other sites More sharing options...
HI PSI Member 1,586 Member For: 18y 9m 7d Gender: Male Location: Central Queensland Posted 28/07/16 07:18 AM Share Posted 28/07/16 07:18 AM If your car is standard , it should have a 2.25' twin exhaust on it already. If this is indeed the case, get an aftermarket 4' dump pipe and high flow cat and retain the rest of the standard system. They flow well enough for most enthusiasts. Please keep in mind, that you MUST get the car tuned as soon as you make the modifications. 1 Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,331 Member For: 19y 5m 9d Gender: Male Location: Perth Posted 28/07/16 07:29 AM Share Posted 28/07/16 07:29 AM ^WHS @turboknapp has an SMB Stealth Dump setup he's looking to shift. 4"dump to 4" cat and transtion to the stock system. Good for bulk power but will need tuning as Hi Psi mentioned. Link to comment Share on other sites More sharing options...
Hotxrturbo6 Member 25 Member For: 9y 8m 21d Posted 28/07/16 08:53 AM Author Share Posted 28/07/16 08:53 AM 4 hours ago, mightbuyaford said: Lots of options depending on what you want but most (if not all) changes are going to start to require dyno time The 3" back is a good idea as it will give you reasonable flow for the 300kw mark. After that ypu need to look at a 4" dump at least on a big 4lt motor. Whats the end goal of the car? Hey guys my goal for the car is to get it running properly first as it has been bought to my attention that I have a partially blocked cat which I think is the problem I'm having with bad fuel economy and lacking a bit of performance at the same time I am thinking of doing the exhaust also I can't see myself pushing this car any higher than 300 kW thanks and look forward to your reply Link to comment Share on other sites More sharing options...
Hotxrturbo6 Member 25 Member For: 9y 8m 21d Posted 28/07/16 11:44 PM Author Share Posted 28/07/16 11:44 PM I'm in Melbourne and I don't have a favoured workshop Link to comment Share on other sites More sharing options...
tronxr6 Donating Members 64 Member For: 10y 10m 22d Gender: Male Location: Langwarrin Posted 29/07/16 09:13 AM Share Posted 29/07/16 09:13 AM Pitlane for the win Link to comment Share on other sites More sharing options...
Hotxrturbo6 Member 25 Member For: 9y 8m 21d Posted 07/08/16 06:22 AM Author Share Posted 07/08/16 06:22 AM Hey guys I ended up buying the herrod twin 2.5" system cat back which goes into 3" before the back muffler and then out in twin again on idle it's has a slightly deeper note but when you rev it pretty much sounds the same as a stick system I'm not sure if I should now change the cat and piping that joins up with the herrod system and hope that it will have a louder note and better performance or sell the herrod system and put the stock system back on with a 4" dump pipe and new cat and hope it's gonna sound nice and performance will be better thanks again guys for all your advice also is there any guys in Melbourne that meet up for cruises as I would like to check out what other mods you guys have done look forward to your reply Link to comment Share on other sites More sharing options...
ROB83R Member 1,632 Member For: 8y 9m 13d Gender: Not Telling Location: Radioactive wasteland Posted 07/08/16 06:48 AM Share Posted 07/08/16 06:48 AM Should've went 4 inch dump and cat first mate. That'll get you the noise you want. Link to comment Share on other sites More sharing options...
Hotxrturbo6 Member 25 Member For: 9y 8m 21d Posted 07/08/16 01:18 PM Author Share Posted 07/08/16 01:18 PM Thanks for the advice rob I still might do that I'm just not sure what to do with the herrod system Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now