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AFR is this ok

This is a discussion on AFR is this ok within the Dyno Information forums, part of the Racing Forums category; Had a dyno tune with headers and new ls6 intake. Hows my AFR (ratio) 12.9 min 13.4 max 13.1 avg ...

  1. #1
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    AFR is this ok

    Had a dyno tune with headers and new ls6 intake. Hows my AFR (ratio)
    12.9 min 13.4 max 13.1 avg
    ? Is this in the ball park.
    mustang dyno 336 hp 329.3 torque
    Last edited by skar; 07-17-2006 at 05:39 PM. Reason: spelling
    68 RS

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    yes no somebody

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    Member GA Country Boy's Avatar
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    Metallic Red
    2002 Corvette Coupe

    13.1 sounds reasonable, but as for the other numbers since I have no idea what motor you're running (I assume LS1) or year or what it was originally rated at, it's pretty difficult to give any kind of reasonable opinion. It's important to give all relevant info if you want anything but a guess. Not all LS1's produce the same hp, for example LS1's in different year vettes can (and do) vary right out of the factory.
    Michael
    In GA waving from '02 C5 LS1, Z51, D1SC, 60lb injectors,RPM level 5-4L60E, 3:42, Yank 3600, QA1-12 ways, MTI long headers, high flow cats, Borlas, Wilwood, 603rwhp, 542rwtq.(DynoJet 248-C) 10.89@127.57 on street tires, Race Weight 3,640 lbs

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    thanks (99 ss ls1 see signature)

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    Member GA Country Boy's Avatar
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    Metallic Red
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    Quote Originally Posted by skar View Post
    thanks (99 ss ls1 see signature)
    Sorry. I must have missed that. Your numbers look good and are a substantial increase over 'stock'. The headers and intake were a good investment.

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    Visualize°Design°Create SSwt00SS's Avatar
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    '12 Silver SS 1SS
    '00 Black SS #8617

    to me, your numbers seem low, compare just my LM dyno (done on a mustang dyno) with yours and it was only a little less than you with headers and Ls6 intake. I know every car behaves differently to bolt-ons, as I have an Ls6 intake and stainless steel headers waiting to be installed. are your numbers SAE corrected? What were your numbers before the bolt-ons?

    your A/F looks good on the avg at 13.1. 13.4 is a little high (not danger)which means you are running lean at those RPM's where it's 13.4 (too high means you could burn a hole in the piston, and other internal wear problems over a long period of time). having an A/F around the high 12 to low 13's is where these cars need to be.
    2000 SS - The Wicked Witch: °°Cammed 'n Slammed°° 458rwhp/410rwtq
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    SSwt00SS
    303 rwhp with loudmouth and slp lid 308 tQ
    ? was told air temp humidity also factors in what numbers you get.
    ALSO my loud mouth sounded like shit with headers.

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    [QUOTE=SSwt00SS;.[/QUOTE]
    Post your dyno numbers after headers and intake install.

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    I had the car checked and re tuned. Now or today 12.9 min 13.2 max and 13.0 avg lost 10 hp today is September 15 last tune was in march
    ? different day different season same car and mods same mustang dyno.
    dyno man said this is what the car runs best at.

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