Blitz Nur Spec on 05 STI, overboost?
29 March 2013, 07:20 PM
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Blitz Nur Spec on 05 STI, overboost?
As above, the car is a widetrack blob STI with PPP and I'm getting either fuel cut or boost cut (how to tell the difference?) on full throttle. Car is standard apart from a Blitz Nur Spec R. What do I need to look for? How can i fix it?! It's getting me down!
29 March 2013, 08:47 PM
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I've only had it a week! Got temporary insurance for Easter till my policy changes over next month. Car has the PPP and the Nur Spec R. That's all I know. I'm pretty sure it's only got the cat in the downpipe now. But I could be talking rubbish. Gutted about it! I was hoping it was the MAF or a coilpack breaking down but its looking pretty clear it's not going to be that.
29 March 2013, 09:56 PM
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Nope no lights at all. Might not be 2nd, only driven it today!
Actually I'm guessing at overboost. At say 3/4 throttle it's almost like the power 'pulsates', and at wide open throttle it's jerky and juddering. Might be plugs or boost solenoid wants cleaning. I'll have a try at cleaning it.
Actually I'm guessing at overboost. At say 3/4 throttle it's almost like the power 'pulsates', and at wide open throttle it's jerky and juddering. Might be plugs or boost solenoid wants cleaning. I'll have a try at cleaning it.
Last edited by JamesDundee; 30 March 2013 at 10:06 AM.
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30 March 2013, 06:27 PM
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u would know if it was overboost because a fuel cut is pretty violent, the boost solenoid would cause it if it were stuck open but it would put the light on, if the valve were stuck closed u wud be at wastegate spring pressure (half boost). I think maybe plugs or it might have a decat downpipe and not been mapped for it
30 March 2013, 09:14 PM
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From what I'm reading it seems to be plugs. I would say its a severe jerking under WOT at higher but defo not violent. And no engine lights either (checked the bulb is still in too!). Looks to be plugs!
31 March 2013, 04:49 PM
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Driven the car quite a bit today (but about 150miles). Car seems to have stopped all but the slightest of pulsating on its own. Am I just subconsciously driving around it?
25 June 2013, 09:18 PM
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*UPDATE*
Fixed by Brian at Cams. Turned out to be the NGK plugs that were fitted in January by a well known Subaru garage were actually Bosch, not gapped at all (2mm?) and only finger tight. I wont name the garage but will send by PM if interested. Car is now running like an absolute beast. My license wont last long!
I thought I'd post an update as I saw plenty of threads that looked to be never resolved when I was searching.
Fixed by Brian at Cams. Turned out to be the NGK plugs that were fitted in January by a well known Subaru garage were actually Bosch, not gapped at all (2mm?) and only finger tight. I wont name the garage but will send by PM if interested. Car is now running like an absolute beast. My license wont last long!
I thought I'd post an update as I saw plenty of threads that looked to be never resolved when I was searching.
