CKUL Speed Cut

Holden/Delco Tuning. ALDL, OBD 1.5. Circa 1989 to 2004.
jacomms
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Location: Goulburn, NSW

CKUL Speed Cut

Post by jacomms »

Hi guys

Well I feel like a bit of a dope..... I was asked to do a very simple Speed Cut mod for a mate who has a "P" plater son who has speed issues.
How hard could it be ....CKUL VS V6 Auto.....also asked if max RPM could be dropped down too.

I have created some strange issues under load from light throttle to foot hard down, almost like RPM cut values were set 2000rpm apart.

Ive scraped the file and about to start again. Has anyone else struck this?? ......oh yeah ...Speed cut didnt work at all.

Cheers

Justin
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Holden202T
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Re: CKUL Speed Cut

Post by Holden202T »

so I am assuming you have the right xdf ? $51 ?

also what settings are you changing to achieve said requirements ?

I've never decreased the rpm limit in ckul but I have used it a lot in the past for ecotec in my Torana.
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antus
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Re: CKUL Speed Cut

Post by antus »

And is the speed sensor logging correctly?
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immortality
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Re: CKUL Speed Cut

Post by immortality »

You could always pull some timing out in the higher RPM areas so it becomes a slug once the RPM's get to high. For day to day driving there really is no need to go over 3000rpm. You would however need to adjust the transmission maps to upshift at the lower rpms as well.
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Holden202T
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Re: CKUL Speed Cut

Post by Holden202T »

immortality wrote:You could always pull some timing out in the higher RPM areas so it becomes a slug once the RPM's get to high. For day to day driving there really is no need to go over 3000rpm. You would however need to adjust the transmission maps to upshift at the lower rpms as well.
you might be better off leaving the rpm limit as stock and then just changing the shift maps to shift earlier, or the timing option is a good one :)

also young people don't always do everyday driving :P
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vlad01
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Re: CKUL Speed Cut

Post by vlad01 »

yeah just de tune the hell out of it, make it slllooowwwww :lol:

pull a heap of timing out of the mid to higher rev range and it will run out of puff as the rpm climbs. Might be bad for his exhaust system though lol
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The1
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Re: CKUL Speed Cut

Post by The1 »

Just tested on the bench as i had VS Enhanced on there anyway, working fine. Just set both the tables up.
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jacomms
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cars: Commodore's .....what else?? :-)
Location: Goulburn, NSW

Re: CKUL Speed Cut

Post by jacomms »

Sorry guys ...did a post n run......been smashed with work (not such a bad thing)

Thanks for your feedback and ideas.

I will have a look at the bin The1 played with.

To be honest I haven't had to do much on the $51 ...vats, dtc removal etc.... heaps in the files.

I will be out at the workshop some time this week, I will take my gear and have a play on the car.

Thanks again

Justin
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