Results 1 to 9 of 9

A/F and Bad #'s

This is a discussion on A/F and Bad #'s within the Dyno Information forums, part of the Racing Forums category; A while back I got my car on the dyno and it showed 280whp and 303wtq. I thought it was ...

  1. #1
    Member SKULLZ's Avatar
    Join Date
    Aug 2005
    Location
    Colorado
    Age
    31
    Posts
    114

    Black
    1999 Z28 Camaro

    A/F and Bad #'s

    A while back I got my car on the dyno and it showed 280whp and 303wtq. I thought it was ok at the time. Later I put on an SLP lid,FRA,K&N,JBA shorty headers(emissions), Random tech high flow cats,2.5"custom Y, and a Hooker cat back. Got it re-dynoed and got 287whp and 317wtq>>>>> what the hell??? I am an A4 at 4982ft with stock trans and gears, I havent tought it was a low numbers until I started reading others close or at my elevation getting at or above 300 hp and tq. Could these numbers be a cause of the A/F ratio?? Please help

  2. #2
    lee1rbc
    Guest
    Did the guy that dynoed Your car do some tuning, or was it just a pull and have a nice day?

  3. #3
    Member SKULLZ's Avatar
    Join Date
    Aug 2005
    Location
    Colorado
    Age
    31
    Posts
    114

    Black
    1999 Z28 Camaro

    it was just a pull, I dont want the shop to tune it because its mainly an import shop, later on I will have it tuned with my H/C swap

  4. #4
    CartekLS1
    Guest
    It's the shorty headers. They don't make anything for power (it's kind of a tell-tale sign when you pull the manifolds and they look nearly identical to the shorties). A 2000 LS1 had edelbrock shorties put on at an LS1 shop I go to all the time and he actually lost a couple rwhp on the first couple dyno pulls.

  5. #5
    Member SKULLZ's Avatar
    Join Date
    Aug 2005
    Location
    Colorado
    Age
    31
    Posts
    114

    Black
    1999 Z28 Camaro

    I gained 1hp and 17tq I thought It was my A/F ratio because...well I dont know why, porbably denial, but Im going to Hooker long tubes soon

  6. #6
    Senior Member Hurley711's Avatar
    Join Date
    Jul 2005
    Location
    Earth
    Age
    41
    Posts
    3,362

    414 RWHP 395 RWTQ
    00 Black Ram Air Trans Am

    Without knowing what your AF ratio is you can't tell if you are running too rich or not. If you are then a good tune will benefit you greatly, until you find out though you won't know.

  7. #7
    Member SKULLZ's Avatar
    Join Date
    Aug 2005
    Location
    Colorado
    Age
    31
    Posts
    114

    Black
    1999 Z28 Camaro

    The weens at the shop never gave me a print out or talked to be about my A/F ratio, I think I saw a 14.1 on the screen when my car was at idle, I was unsure as to what a stock A/F should be

  8. #8
    Senior Member Hurley711's Avatar
    Join Date
    Jul 2005
    Location
    Earth
    Age
    41
    Posts
    3,362

    414 RWHP 395 RWTQ
    00 Black Ram Air Trans Am

    Quote Originally Posted by SKULLZ
    The weens at the shop never gave me a print out or talked to be about my A/F ratio, I think I saw a 14.1 on the screen when my car was at idle, I was unsure as to what a stock A/F should be

    13.1 is optimal, at 14.0-14.0 you have some power to gain with a good tune

  9. #9
    Member SKULLZ's Avatar
    Join Date
    Aug 2005
    Location
    Colorado
    Age
    31
    Posts
    114

    Black
    1999 Z28 Camaro

    makes sense thanks!!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •