Spydabite42 New Member 8 Member For: 7y 2m 24d Posted 11/04/18 09:36 AM Share Posted 11/04/18 09:36 AM Recently replaced my blow off valve with a new scarles one, discovered that the old one was sucking in air at idle cause if my car to run at 11 in vacuum according to the gauge. It’s now at 20-23 in vacuum at idle etc now. I took it forbits first test run tonight since doing some maintenance and have found that it’s not boost right, it picks up boost well and then once it hits its peak the boost drops to about 2 psi (standard 4/5psi tune). The car seems to shudder and lurch about occasionally surging back up and down, a couple of times it had a slight backfire. Temp is normal. No smoke. No lights showing up or anything to show that it’s picking up an error. Has anybody had this issue before ? Link to comment Share on other sites More sharing options...
El Andrew Gold Donating Members 2,019 Member For: 9y 1d Gender: Male Location: Canberra ACT Posted 11/04/18 11:03 AM Share Posted 11/04/18 11:03 AM How old are your coils and plugs? Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,302 Member For: 16y 13d Gender: Male Location: Melbourne Posted 11/04/18 11:20 AM Share Posted 11/04/18 11:20 AM Sounds like coils are on their way out. Link to comment Share on other sites More sharing options...
Spydabite42 New Member 8 Member For: 7y 2m 24d Posted 12/04/18 03:46 AM Author Share Posted 12/04/18 03:46 AM I have some off the brothers xr6 n/a will they do the trick in the mean time while I wait for new ones to arrive, he replaced his while chasing an idle issue and discovered they were perfectly fine and his problem was a leaking intake gasket 1 Link to comment Share on other sites More sharing options...
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