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crome idle woes

Old 03-23-2007, 01:05 PM
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Default crome idle woes

i recently rebuilt my gsr with pistons cams valvetrain etc. i tried running crome because i needed a bin that was close to a stock ITR to start. when i run the itr bin in crome the idle sucks and surges from 200rpm to 1200 rpm when im stopped. other than that the car runs great. i cant find an uber bin for a typeR since uber is the only program that idles right for me. what can i do in crome to get the car to sit right at idle really would rather run it. its crome V1.0. is it buggy with the iacv? (its no vac leak or fitv or iac probelm changed them all and vac lines when i run uber the car sits perfect. and yes im taking it to a toona soon enough just want a goodbase for cruising around right now.)
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Old 03-23-2007, 03:40 PM
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Default Re: crome idle woes

Get the latest version of Crome free.

Also check for a vac leak or something like that. If this is a new engine install then you may just have a mechanical issuue.
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Old 03-24-2007, 10:58 AM
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Default Re: crome idle woes

my comp wont let the latest version run for whatever reason. its definatly not macanical too since uber is ideling my car fine and ive already changed anything that could be the culprit vac wise. im just going to let a friend whos good with computers set my ---- up so the newer version will work.
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Old 03-24-2007, 03:06 PM
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Default Re: crome idle woes

You synched timing?

What are your idle AFRs?

Are you using P30 or P72 code base?
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Old 03-24-2007, 04:29 PM
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Default Re: crome idle woes

timing is the same as when i had the stock gsr pistons changed them to usdm ITRs so the base timing may be off now?

i dont have a wideband so i cant see exactly see whats going on with AFR during idle thats why im taking it to a tuner soon. however i am using the O2 sensor and didnt disable it. i also tried changing values with the idle on the same .bin and tried tuning the idle using plug reading and they looked fine.

P72 code base. i think. i opened stock gsr and imported p73 over it.

tried messing with iac values which didnt make a difference i think its somthing with V1.0 messing with these or the P73 bin i have is crap maybe?
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Old 03-24-2007, 09:02 PM
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Default Re: crome idle woes

i dont think i imported it over a code base like i said i had before.. the ITR bin i grabbed off your website exnocron, would not import over the p72 or the p30 it said the dimensions were different.. i opened it and modded it for 450s
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Old 03-25-2007, 09:32 AM
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Default Re: crome idle woes

Air in TB, or you can always block off IACV and set idle with the throttle stop set screw. Funny thing is, the engine will idle fine with a disable IACV, they are worthless.
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Old 03-26-2007, 12:54 AM
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Default Re: crome idle woes

will try if nothing elese works....
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Old 03-26-2007, 09:35 AM
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Default Re: crome idle woes

Originally Posted by Joseph Davis
Air in TB, or you can always block off IACV and set idle with the throttle stop set screw. Funny thing is, the engine will idle fine with a disable IACV, they are worthless.
Yes they will. Lightweight flywheels make stop and go driving fun with a disabled and disconnected IACV though
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Old 03-26-2007, 10:42 AM
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Default Re: crome idle woes

Really? Is it a stall fest as the engine spins down or something?
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