merin234 Member 9 Member For: 14y 6m 10d Gender: Male Posted 29/10/10 03:54 AM Share Posted 29/10/10 03:54 AM Hi allLet's say you get -injectors -high flow cat -intercooler -tuneSay it makes 320 rwkw or so. But then boost decreasing from 15 psi peak to 11 psi towards the 5000-6000 rpm.Is there a way to reduce that effect? Air intake or waste gate actuator or something else? Link to comment https://www.fordxr6turbo.com/forum/topic/71346-why-boost-is-decreasing/ Share on other sites More sharing options...
4DZILR Donating Members 713 Member For: 15y 2m 27d Gender: Male Location: Sydney - Brighton Le Sands Posted 29/10/10 03:58 AM Share Posted 29/10/10 03:58 AM Has it been tuned?Normally when you have a bigger cat, you get boost jumps.. and it dripples down.. get it tuned champ! Link to comment https://www.fordxr6turbo.com/forum/topic/71346-why-boost-is-decreasing/#findComment-1051334 Share on other sites More sharing options...
MiKa Donating Members 4,243 Member For: 18y 8m 10d Gender: Male Location: Melbourne, VIC Posted 29/10/10 05:31 AM Share Posted 29/10/10 05:31 AM Yea the STD actuator has a 3psi spring if I remember correctly, and won't hold 15psi.. Get an actuator with the spring suited to what boost u want to run, so for a 15psi tune you should get a 12 psi actuator, you could get a 15psi one but you won't be able to run less than 15psi.. Unless your happy with that.. Link to comment https://www.fordxr6turbo.com/forum/topic/71346-why-boost-is-decreasing/#findComment-1051354 Share on other sites More sharing options...
merin234 Member 9 Member For: 14y 6m 10d Gender: Male Posted 29/10/10 05:57 AM Author Share Posted 29/10/10 05:57 AM ok, but can I get stronger actuator and use it with standard wastegate on 320rwkw tune? Link to comment https://www.fordxr6turbo.com/forum/topic/71346-why-boost-is-decreasing/#findComment-1051359 Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 11m 4d Gender: Male Location: @ my laptop Posted 29/10/10 06:19 AM Share Posted 29/10/10 06:19 AM depends on how well the exhaust flows, with a good exhaust, no you can't.the tune will need to be redone for a stronger actuator Link to comment https://www.fordxr6turbo.com/forum/topic/71346-why-boost-is-decreasing/#findComment-1051364 Share on other sites More sharing options...
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