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Which air lid to buy?

This is a discussion on Which air lid to buy? within the External Engine forums, part of the LSx Technical Help Section category; What is the best air lid for me to purchase? already have the K&N filter. 99 Firehawk...

  1. #1
    Member blownh2x's Avatar
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    99 Firehawk (M6) #518

    Which air lid to buy?

    What is the best air lid for me to purchase? already have the K&N filter. 99 Firehawk

  2. #2
    sell out Mustang Killa's Avatar
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    Well I have the SLP lid, I'm not really happy with how it fits..I think there is an SLP lid that was availible through GM that was an option on your car (firehawk) in an upgraded SLP package because I know there were different SLP options/trim levels for the firehawk..I'm guessin if you could track one down it would be a much better fit..so it will probably depend on how much you are willing to spend..

  3. #3
    Member blownh2x's Avatar
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    99 Firehawk (M6) #518

    I was looking and leaning towards the slp lid but there are a couple out there. which one has the most hp gain?

  4. #4
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    Navy Blue Metallic
    '00 Formy A4

    There was a magazine article done on this topic a few years ago, IIRC the SLP made the most power.

    The article is still floating around on the web somewhere, it might be on the GM High Tech Performance site.

  5. #5
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    1998 Trans AM MM6

    The SLP is suppossed to do 8 rear wheel, but don't fit properly. Looks sharp though.

  6. #6
    Member blownh2x's Avatar
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    99 Firehawk (M6) #518

    ordering a slp lid now

  7. #7
    Member jag42420's Avatar
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    http://www.motorsporttech.com/fbody_air_intake01.asp Click the HERE link to see the article.

    Here's the page you're looking for:

  8. #8
    Member blownh2x's Avatar
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    99 Firehawk (M6) #518

    Thanks for all the help guys.

  9. #9
    Freezin in AK! ArcticZ06's Avatar
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    Old: 00 WS6, 02 Z06, 79TA
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    I thought Firehawks already came with an SLP lid?

  10. #10
    Member jag42420's Avatar
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    Quote Originally Posted by mcarse81 View Post
    I thought Firehawks already came with an SLP lid?
    SLP Firehawk Package (From a March 1998 Road Test done by Motor Trend):

    Level I - SLP body package (exposed headlamps, SLP hood, SLP exhaust system, and firehawk 17" wheels and Firestone firehawk tires)

    Level II - Same as Level I + Performance suspension (Bilsten Shocks, variable springs, and a larger anit-roll bar), Auburn differential, Hurst shifter, lumbar-adjustable seats, firehawk floor mats, synthetic power-steering fluid and differential lube.

    Level III - Same as Level I and II + SLP spoiler

    C/D Test Results:
    0-60......5.0 sec
    1/4-mile.....13.5mph @ 106mph

    Power......327 bhp @ 5200 rpm
    Torque.....345 lb-ft @ 4000 rpm

  11. #11
    Member blownh2x's Avatar
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    99 Firehawk (M6) #518

    Mine is a 99 and it has the stock air lid. I have the bilstein suspension, exhaust, lowering springs, shifter, lumbar adj seats, chrome wheels, hood.

  12. #12
    Member Kup98ss's Avatar
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    newly designed SLP. Mine fits great. filters better than my stock lid as well.

    No dirt past filter.

  13. #13
    Life in the Fast lane sunsetorangess's Avatar
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    Throw the K&N in the garbage, pick up a paper filter and just about all lids are the same. Good info JAG.
    J
    2001 SS, Its not the car its the Driver that matters....

  14. #14
    Member jag42420's Avatar
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    Quote Originally Posted by sunsetorangess View Post
    Throw the K&N in the garbage
    Someone on here or on LS1tech did a rear wheel dyno comparison of a full bolt on comparing the K&N to a Fram. The Fram dynoed 2HP more consistently. I'll see if I can find it...

  15. #15
    Life in the Fast lane sunsetorangess's Avatar
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    Quote Originally Posted by jag42420 View Post
    Someone on here or on LS1tech did a rear wheel dyno comparison of a full bolt on comparing the K&N to a Fram. The Fram dynoed 2HP more consistently. I'll see if I can find it...
    Personaly iv seen nothing but headaches with K&n filters, Ie Garbage getting through the filter, too much oil, straight out of the box, Throwing codes and vehicles running like poo becaue it Got the Maf with some oil.
    J

  16. #16
    Member jag42420's Avatar
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    From:
    porsche914ls6
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    74 Porsche 914 LS6 500HP
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    K & N filter myths
    --------------------------------------------------------------------------------
    "I went to Doug Rippie Motorsports recently to have my trick LS6 tuned on the dyno. Doug asked me if I wouldn't like to put a K & N filter in for a few more HP. I said "I'll buy it if you can show me on the dyno that it improves HP by at least 2 HP". So...with a baseline of 434 RWHP, we installed the K & N filter...did another dyno pull to see the improvement and wallah....A 2 HP DROP! I pulled the filter out of the car and slammed it right back in the box and said "I appreciate the effort...but it apparently flows less than my Fram cheap ass filter". We made a few more pulls and HP was back up 2 HP with the Fram. Lesson: Don't believe everything you hear."

    And here: http://forums.corvetteforum.com/show....php?t=1472226

  17. #17
    Member blownh2x's Avatar
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    99 Firehawk (M6) #518

    The K&N was in my car when I purchased it so maybe I'll get the Fram now after reading this.

  18. #18
    Member ApexVIII's Avatar
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    1998 Camaro Z28

    i have SLP it fits good, not great but good
    M6, Lid, Ported and Polished Throttle Body (By Me!), LT, Custom Catted Y, Electric Cutout, PHB, LCA13.21@108 with a 2.3 60'

  19. #19
    Slow SS
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    2002 Chevy Camaro

    My slp lid fit ok, it fit much better after I took the foam insulater that comes with a k&N filter and stuck it to the air lid. Works much better now

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