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Old 05 March 2016, 03:32 PM
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96sti
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I have changed the block in my classic it' starts up ok with a little throttle and ticks over little bit rough I changed the plugs to ngk pfr7b made no difference haven't driven it yet but when I rev it to 4000rpm the check engine light starts flashing at me now am a little worried
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Old 05 March 2016, 04:05 PM
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Did you do a volume test to ensure that the compression ratio would be right?

It's VITAL for turbo engines. If you get it wrong it will det itself to death.
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Old 05 March 2016, 04:05 PM
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Standard ECU?
What codes come up with the CEL?
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Old 05 March 2016, 04:11 PM
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Originally Posted by alcazar
Did you do a volume test to ensure that the compression ratio would be right?

It's VITAL for turbo engines. If you get it wrong it will det itself to death.
Hi alcazar no I didn't I contacted a reputable tuner in the subaru industry and he advised me that 1.6mm headgasket would be fine
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Old 05 March 2016, 04:12 PM
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Originally Posted by ossett2k2
Standard ECU?
What codes come up with the CEL?
Apexi ecu. Tryed doing a flash test but the engine light done naff all so only option is to get obd done
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Old 05 March 2016, 04:14 PM
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Originally Posted by 96sti
Apexi ecu. Tryed doing a flash test but the engine light done naff all so only option is to get obd done
Can't you set rev limit to light the CEL?
Maybe yours is set to 4k?
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Old 05 March 2016, 04:20 PM
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Originally Posted by ossett2k2
Can't you set rev limit to light the CEL?
Maybe yours is set to 4k?
It can rev past 4000rpm tho that's just when the CEL comes on as I thought it may be in safe mode or something
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Old 05 March 2016, 04:32 PM
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Apexi doesn't retain the oem fault codes so wouldn't have thought the CEL means there is a fault?
I ment shift light not rev limit.
Do you have the hand commander?
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Old 05 March 2016, 04:48 PM
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Just having a quick look at apexi on an Impreza.
The mapper usually sets the CEL to come on it its detting,so sounds like you have a problem,running very lean or timing well out.
Have you double checked timing marks all line up?
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Old 05 March 2016, 05:16 PM
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Originally Posted by ossett2k2
Just having a quick look at apexi on an Impreza.
The mapper usually sets the CEL to come on it its detting,so sounds like you have a problem,running very lean or timing well out.
Have you double checked timing marks all line up?
No I don't have the hand controller. I have checked the timing over and over again it's spot on and every tooth from 1 Mark to the next is absolutely spot on
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Old 05 March 2016, 05:54 PM
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The CEL can also mean the injectors are maxing out,but as you don't have the hand commander then you can't check the duty.

Do you have an AFR gauge or knock detector? or even some dettcans so you can see if it is detting?
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Old 05 March 2016, 05:57 PM
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Power fc will flash the cel if it detects det, a solid light could be where the rev limit is set or any of the other parameters outside of their normal working range
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Old 05 March 2016, 06:17 PM
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Originally Posted by ossett2k2
The CEL can also mean the injectors are maxing out,but as you don't have the hand commander then you can't check the duty.

Do you have an AFR gauge or knock detector? or even some dettcans so you can see if it is detting?
There 440 injectors and they were fine before I changed the block. No I don't have afr or det cans
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Old 05 March 2016, 06:18 PM
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Originally Posted by banny sti
Power fc will flash the cel if it detects det, a solid light could be where the rev limit is set or any of the other parameters outside of their normal working range
It's not a solid cel only flashing when you rev beyond 4000rpm by this time I backed of after confirming it was at 4000rpm and beyond
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Old 05 March 2016, 06:38 PM
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Sounds like it could be detting then.
If you don't have a cable and software or the commander then you can't really see what's going on,best getting a mapper to take a look I would say.
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Old 05 March 2016, 06:55 PM
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Originally Posted by ossett2k2
Sounds like it could be detting then.
If you don't have a cable and software or the commander then you can't really see what's going on,best getting a mapper to take a look I would say.
Will a mapper/mapping sort this issue out then
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Old 05 March 2016, 07:03 PM
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Originally Posted by 96sti
Will a mapper/mapping sort this issue out then
A mapper will be able to tell you if its detting,a good mapper should be able to tell you why it's detting.
DIY detcans are easy and cheap to make,some ear defenders,some lengths of rubber pipe/tubeing and a length of copper pipe.

What block did you fit? Fresh rebuild? What heads?
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Old 05 March 2016, 07:40 PM
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Originally Posted by ossett2k2
A mapper will be able to tell you if its detting,a good mapper should be able to tell you why it's detting.
DIY detcans are easy and cheap to make,some ear defenders,some lengths of rubber pipe/tubeing and a length of copper pipe.

What block did you fit? Fresh rebuild? What heads?
V1 block v5 heads mate det cans how do I work them
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Old 05 March 2016, 07:50 PM
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Detcans when built,you fix the copper end on the block close to the knock sensor,put the ear defenders on and listen for det(engine knock/pinking)
Sounds a little like frying bacon noise.

I take it your car is a version 5 classic then?
Last edited by ossett2k2; 05 March 2016 at 07:52 PM.
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Old 05 March 2016, 08:16 PM
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Originally Posted by ossett2k2
Detcans when built,you fix the copper end on the block close to the knock sensor,put the ear defenders on and listen for det(engine knock/pinking)
Sounds a little like frying bacon noise.

I take it your car is a version 5 classic then?
No it's a v4 classic mate and If I were to make my own detcans still no good to me as like you said a good good mapper will tell me the problem to rectify I'm no mapper so it's like playing darts in the dark
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Old 05 March 2016, 08:20 PM
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Originally Posted by ossett2k2
I've been reading up on heads as I'm having problems with mine atm.
You're best off triple checking this but,I came across some info on the thread I've linked.
V5 heads are phase 2 so would need a 0.6mm head gasket not 1.2mm when fitting to a v1 block.
Like I say,I'm no engine builder so might be way off the mark so best checking the info is correct.
https://www.scoobynet.com/general-te...is-before.html
I'm using a 1.6mm gaskets mate I'll have a flick through that now
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Old 05 March 2016, 08:23 PM
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Ok I've just re read that and it does say 1.6mm so looks like you're ok,sorry about that mate.

Also yes you are right,the detcans will only tell you that you have knock and not where the fault is.
Last edited by ossett2k2; 05 March 2016 at 08:25 PM.
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Old 05 March 2016, 08:25 PM
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Originally Posted by ossett2k2
Ok I've just re read that and it does say 1.6mm so looks like you're ok,sorry about that mate.

Also yes you are right,the detcans will only tell you that you have knock and not where the fault is.
Sounds I need a mapper asap lol
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Old 08 March 2016, 08:20 PM
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This is one of 2 codes the diagnostic showed up
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Old 08 March 2016, 08:22 PM
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And this is the other can anyone help
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Old 09 March 2016, 06:14 PM
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Anyone
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