Holley Commander 950 TBI easy to tune? - Team Camaro Tech
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post #1 of 5 (permalink) Old Nov 18th, 10, 06:50 PM Thread Starter
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Timothy
 
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Holley Commander 950 TBI easy to tune?

I was looking for a cheap EFI alternative and I found a used complete holley commander 950 TBI for $550, its the one thats good to 600hp. First question is this a good deal?

I can get a laptop but how hard are these to tune? Im trying to reduce my frustrations with carburation not swap it for more.



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post #2 of 5 (permalink) Old Nov 20th, 10, 08:56 AM
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Chuck
 
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Re: Holley Commander 950 TBI easy to tune?

Quote:
Originally Posted by Microgiant View Post
I was looking for a cheap EFI alternative and I found a used complete holley commander 950 TBI for $550, its the one thats good to 600hp. First question is this a good deal?

I can get a laptop but how hard are these to tune? Im trying to reduce my frustrations with carburation not swap it for more.]
Make sure that the "used" system is provided with the data logging capability and a clean, 5-wire O2 sensor. You can't tune it accurately without data on the A/F ratio.

I've tuned my Commander 950-equipped 4th generation race cars with a laptop for almost ten years. It's not a complicated process although I would advise you to take the car to a GOOD chassis dyno tune-up specialist at the outset. The "packaged" programs that come with the system and that are available on the Holley website will be good enough to get the car running but in order to get the fuel curve precisely aligned to the engine's needs, you'll want to be able to put the car under a load through the RPM band, log the O2 data, and then analyze the data file before making changes in the fuel/spark maps. You can do it without a dyno but it will take a lot of time and patience to achieve the maximum potential for your car under the conditions in your geographic area.

Good luck.

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post #3 of 5 (permalink) Old Nov 22nd, 10, 10:08 AM
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Re: Holley Commander 950 TBI easy to tune?

You'll want the wideband 02 upgrade as mentioned (which I doubt that has) so add $300 to that price.

Does it come with the fuel pump and everything else? A "good deal" can add up quickly.
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post #4 of 5 (permalink) Old Nov 22nd, 10, 01:39 PM Thread Starter
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Timothy
 
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Re: Holley Commander 950 TBI easy to tune?

Quote:
Originally Posted by Doug F. View Post
You'll want the wideband 02 upgrade as mentioned (which I doubt that has) so add $300 to that price.

Does it come with the fuel pump and everything else? A "good deal" can add up quickly.

Sigh, then maybe its just as well. He has been flaking out on me. I told him I would buy it and asked for his info and havnt heard from him since. Im saving for once of the self learning models.
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post #5 of 5 (permalink) Old Nov 24th, 10, 06:46 AM
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Jim
 
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Re: Holley Commander 950 TBI easy to tune?

I run that same unit. It's pretty easy to tune, works very well, and is well worth that $550

Make sure the controller is version 3 (older models are not wideband compatible)

Put wideband o2 on it (I used an autometer wideband gauge, it has an output for the controller and matcvhed the other gauges on my dash) The Holley ECU is compatible with any wideband system, you don't have to buy theirs.

My install is documented here, with pictures. I used to mod this forum before I got tired of autoforum and started my own site.





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