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Old 09-27-2009, 09:21 AM   #1 (permalink)
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Default Finally tuning! have ?'s

Hey guys!

So I went out tuning for the first today! I was dreading it but it's actually really fun I'm using Crome Pro, LC-1 logged through Crome, Xenocron Logging cable and everything is working ok. I started by turning off my IACV and just setting it up with the idle screw and a nice ~14.7 AFR and a target of 1000rpm. I have the idle down and started moving towards cruising and light bursts. The AFR's are dropping a little fast, cruising is ~14:1 and then under some load ~high 13's:1 and then under a 60% TPS burst to ~5000 rpm it went to 12.9:1 AFR. I feel I can sort this out myself.

I do however want to know why when under engine breaking it shoots all the way up to 19+:1 AFR?

Also when I was going down my street my oil pressure gauge went down to 0 It's a Blox electro gauge. My oil light didn't come on and the gauge was all the way down touching the needle at 0. I turned my car off right away and checked the wiring witch was still attached. I turned my car on when I was in my drive way and the engine still purred almost silent and the gauge still read 0 with no oil light.

When does the stock oil light come on? what PSI?
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Old 09-27-2009, 09:34 AM   #2 (permalink)
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under engine breaking you're AFR shoots up to 19+ because fuel cut is activated.
I think stock oil light comes on when oil pressure reaches 5psi , I think don't quote me on that.
maybe you're electro oil guage sending unit for blox is malfunctioning!
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Old 09-27-2009, 09:55 AM   #3 (permalink)
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Originally Posted by DRFT View Post
under engine breaking you're AFR shoots up to 19+ because fuel cut is activated.
I think stock oil light comes on when oil pressure reaches 5psi , I think don't quote me on that.
maybe you're electro oil guage sending unit for blox is malfunctioning!
I see. So its not actually 19:1 its infinity:1. So this is ok then? lol I've been stabbing my clutch the second I take my foot of the gas to prevent this. I also think its the blox unit. I'll know soon enough... my engine will let me know
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Old 09-27-2009, 10:02 AM   #4 (permalink)
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5-7PSI is the spec for the oil dummy light.

Fuel cut is to save fuel and reduce emissions and there is no point in having any fuel injected under engine breaking.
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Old 09-27-2009, 10:23 AM   #5 (permalink)
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Thanks guys.

Beaver you have the right to say "I told you so" about my oil pressure set up
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Old 09-27-2009, 10:53 AM   #6 (permalink)
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plug gap and what kind of plugs? also maybe try checking the sending unit for the oil pressure gauge?
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Old 09-27-2009, 03:18 PM   #7 (permalink)
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Plugs? = wtf...
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