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Old 06-14-2009, 12:52 PM   #1
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Default Tune A/F fro Hp

**for**

ok so I had my car up on the dyno yesterday at speed inc and Larry said that I should get a tune because my a/f was lean.



so from what I can see I would need the gm full dyno tune to adjust the A/F ratio. my question is should I do this its $500. what kind of gains could I expecet to see?
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Old 06-14-2009, 01:55 PM   #2
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are you on a stock tune?
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Old 06-14-2009, 01:57 PM   #3
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dont know I bought the car with all the mods
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Old 06-14-2009, 01:59 PM   #4
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what mods?

i think if your modded you should go for some sort of tune....either mail order or dyno tune. i think you can get a mail order for like $99 from pcmforless though i'm not much of an ls1 guy.
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Old 06-14-2009, 02:54 PM   #5
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I Dont know much about tuning, but that does look pretty lean. Is there any detonation?

Since you dont know what mods are on it, it might be kinda tough to get the right off the shelf tune. Unless you can find out the mods, you are probably going to need to find someone with a wideband, some sort of logging/tunning software, a dyno and/or a nice stretch of road. I guess paying speed inc. $500 is an option too.
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Old 06-14-2009, 03:31 PM   #6
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Quote:
Originally Posted by JDHedman View Post
**for**

ok so I had my car up on the dyno yesterday at speed inc and Larry said that I should get a tune because my a/f was lean.


so from what I can see I would need the gm full dyno tune to adjust the A/F ratio. my question is should I do this its $500. what kind of gains could I expecet to see?
Yea, you want to get it down in the high 12s. $500 is about the going rate at a shop... PM me if you want a street tune done. I can hook you up and save you some $.

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what mods?

i think if your modded you should go for some sort of tune....either mail order or dyno tune. i think you can get a mail order for like $99 from pcmforless though i'm not much of an ls1 guy.
Don't waste your $ on mail order tunes, unless you're just getting basic tune changes done... fuel and airflow tables (VE & MAF) tables just can't be reliably adjusted without seeing the car run on a wideband... tuning it on narrow band data alone is a ridiculous concept... but people do it...

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I Dont know much about tuning, but that does look pretty lean. Is there any detonation?

Since you dont know what mods are on it, it might be kinda tough to get the right off the shelf tune. Unless you can find out the mods, you are probably going to need to find someone with a wideband, some sort of logging/tunning software, a dyno and/or a nice stretch of road. I guess paying speed inc. $500 is an option too.
Like he said.
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Old 06-14-2009, 10:32 PM   #7
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i know

lid, slp mass air, mti racing throttle body, fast intake, p&p heads, chromoly pushrods, titanium retainers, double valve springs, cam ( dont know what kind), slp long tube headers, slp loudmouth thats all I can think of for power adders
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Old 06-14-2009, 10:42 PM   #8
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i am thinkin i might go here http://www.prodynotech.com in aug. one of the guys on wolfpack recommended them and there prices seem reasonable. could be a good road trip too. I am going to need to get my a/f mix right before I think about gettin a bottle
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Old 06-15-2009, 12:20 PM   #9
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Prices from $375. Not bad. Wonder if thats a full tune or just the basics.
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Old 06-15-2009, 12:23 PM   #10
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Go to straightline performance. All the guys from shockerracing use them and are running ridiculous times at the track for the amount of work done. We went to the track yesterday and a guy asked my buddy how much nitrous he was using. He's not using any nitrous, just a cam and bolt ons.
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Old 06-15-2009, 12:25 PM   #11
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Straightline's website.

http://www.1320hp.com
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