lanky71 Member 10 Member For: 12y 7m 17d Posted 30/06/12 01:52 PM Share Posted 30/06/12 01:52 PM Hi,I was reading and when you modify the exhaust system on a XR6 Turbo is highly suggested you get a tune to prevent boost creep, etc...But could this not be circumvented by added a boost controller to the system to prevent the need for a tune straight away if you keep the boost at standard setting even though you've added a full exhaust system? Link to comment Share on other sites More sharing options...
PookeyMaster Donating Members 1,531 Member For: 13y 10m 1d Gender: Male Location: Parramatta, NSW Posted 02/07/12 12:38 AM Share Posted 02/07/12 12:38 AM Mate, you need to get a tune. These cars are very sensitive and the ECU has tight thresholds for boost so a boost controller is no good. The problem with a bigger exhaust is that it allows too much overboost and the ECU puts the car into limp mode. Link to comment Share on other sites More sharing options...
patrick1234 Member 39 Member For: 12y 8m 11d Posted 02/07/12 09:20 AM Share Posted 02/07/12 09:20 AM You need a tune bro, I put an exhaust on a couple of months ago and I took it to a dyno just for a power run and it was leaning out way to much, the guy stopped the dyno so it didnt blow up. And my boost also went from 10 to 18 psi Link to comment Share on other sites More sharing options...
Impellor Member 835 Member For: 14y 3m Gender: Not Telling Posted 02/07/12 09:32 AM Share Posted 02/07/12 09:32 AM When you say you modify your exhaust, what are you actually reffering too, because if you are doing a standard cat back you don;t need a retune. Cheers Link to comment Share on other sites More sharing options...
lanky71 Member 10 Member For: 12y 7m 17d Posted 02/07/12 09:45 AM Author Share Posted 02/07/12 09:45 AM ok thanks for the help guys, I just wanted to clarify it just wasn't a boost spike issue.. since I know with nissan imports you can simply add a boost controller to keep boost creep in check but they don't experience the major lean out issues.Wasn't aware that the ford engines were so sensitive. Link to comment Share on other sites More sharing options...
PookeyMaster Donating Members 1,531 Member For: 13y 10m 1d Gender: Male Location: Parramatta, NSW Posted 03/07/12 12:50 AM Share Posted 03/07/12 12:50 AM Remember, you're also dealing with a larger engine and a larger turbo so they can each push more air through than a Nissan. Link to comment Share on other sites More sharing options...
Wenier Donating Members 1,736 Member For: 14y 9m 2d Gender: Male Location: Christchurch, New Zealand Posted 03/07/12 02:59 AM Share Posted 03/07/12 02:59 AM Its more an issue of the wastegate cant control it so the boost control wont have any effect in stopping it. And as the ford doesnt run a airflow meter it cant compensate for it. Link to comment Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 15y 10m 28d Gender: Male Location: SE Melbourne Posted 03/07/12 03:05 AM Share Posted 03/07/12 03:05 AM (edited) The stock ecu (PCM) is the boost controller. Edited 03/07/12 03:05 AM by Paulie2256 Link to comment Share on other sites More sharing options...
bossmang FREAKY Donating Members 12,419 Member For: 14y 9m 25d Gender: Male Location: Melbourne Posted 03/07/12 04:12 AM Share Posted 03/07/12 04:12 AM yer with these cars boost it not controlled manually like the good old days ie slap on a boost controller.as paulie said boost is controlled electronically! Link to comment Share on other sites More sharing options...
lanky71 Member 10 Member For: 12y 7m 17d Posted 03/07/12 10:54 AM Author Share Posted 03/07/12 10:54 AM that explains it more thanks guys.Makes even more sense now. Need to update my mechincal skils lol Link to comment Share on other sites More sharing options...
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