bradles024 Donating Members 1,145 Member For: 15y 2m 16d Gender: Male Posted 27/01/11 09:40 AM Share Posted 27/01/11 09:40 AM Would a different dump pipe to standard need the car to be tuned? If everything else was stock, stock cat, but a 4" dump? Link to comment Share on other sites More sharing options...
Kv! Donating Members 1,132 Member For: 14y 11m 14d Gender: Male Location: Eastern Suburbs, Melbourne Posted 27/01/11 10:19 AM Share Posted 27/01/11 10:19 AM I assume it would overboost mate,I would get a tune to be on the safe side, and upgrade the cat while your at it ! Link to comment Share on other sites More sharing options...
spoolxr6 Member 312 Member For: 14y 2m 15d Posted 27/01/11 12:50 PM Share Posted 27/01/11 12:50 PM Why would you bother with the dump pipe if you don't want to retune? Are you doing some mods in stages and want to drive with it like that for a while? Most of the boost spikes are caused by free flowing cats and not the dump pipe. Link to comment Share on other sites More sharing options...
dre Resident idiot. Donating Members 2,068 Member For: 14y 4m 10d Gender: Male Location: Melbourne Posted 27/01/11 08:25 PM Share Posted 27/01/11 08:25 PM Your going to pay someone to install it $, your going to run the risk of damaging something (maybe) $$. You will gain very little from this waste of $$$. Keep the pipe on the shelf until you get a cat and a tune. Do it all at once. Link to comment Share on other sites More sharing options...
bradles024 Donating Members 1,145 Member For: 15y 2m 16d Gender: Male Posted 28/01/11 08:48 AM Author Share Posted 28/01/11 08:48 AM (edited) Nah its not that, I'm putting the stock exhaust back on, but I'm having trouble finding a stock dump pipe.edit: And I'm not going to pay someone to install it, it's not that hard of a job. Edited 28/01/11 08:49 AM by bradles024 Link to comment Share on other sites More sharing options...
bluprinturbo Donating Members 605 Member For: 16y 8m 19d Gender: Male Location: brisbane Posted 28/01/11 09:07 AM Share Posted 28/01/11 09:07 AM I dont think it would be a problem. at the end of the day the stock cat is still going to restrict the exhaust gasses the same regardless of the dump size. check boost and a/f just in case. Link to comment Share on other sites More sharing options...
bradles024 Donating Members 1,145 Member For: 15y 2m 16d Gender: Male Posted 28/01/11 10:53 AM Author Share Posted 28/01/11 10:53 AM Thanks mate, as it turns out one has just turned up so no need to run the 4" anymore.Just another quick question, the wastegate has been ported on the turbo, and the fuel pump is a walbro item. Will these affect the stock tune? Link to comment Share on other sites More sharing options...
spoolxr6 Member 312 Member For: 14y 2m 15d Posted 28/01/11 08:08 PM Share Posted 28/01/11 08:08 PM If anything it might run less boost but you'll probably find no change with the ported gate. Link to comment Share on other sites More sharing options...
mrmackie Donating Members 67 Member For: 17y 4m 12d Gender: Male Location: Perth - CBD Posted 29/03/11 12:02 PM Share Posted 29/03/11 12:02 PM Thanks mate, as it turns out one has just turned up so no need to run the 4" anymore.Just another quick question, the wastegate has been ported on the turbo, and the fuel pump is a walbro item. Will these affect the stock tune?No. Had fuel pump installed and my wastegate ported with flapper mod at 25k. Been driving it around for 50K on a stock tune and had no problems what so ever Link to comment Share on other sites More sharing options...
fordboy1981 Donating Members 2,075 Member For: 22y 12d Gender: Male Location: Sydney, NSW Posted 30/03/11 12:45 AM Share Posted 30/03/11 12:45 AM No. Had fuel pump installed and my wastegate ported with flapper mod at 25k. Been driving it around for 50K on a stock tune and had no problems what so everwhy did you waste your money on said mods if you were just going to leave the stock tune in place?! Link to comment Share on other sites More sharing options...
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