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Thread: Kook's Headers Dyno Results!!

  1. #1
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    Talking Kook's Headers Dyno Results!!

    Wow!

    I just got back from doing the post-dyno on my car with the Kook's exhaust on and was so excited I just can't contain myself!

    Wow! (It bears repeating)

    The only caveat I have to mention is that my car has a 3000rpm stall in it, so getting number much below 4000rpm is near impossible on a dyno. BUT, I can tell you, the newly available amount of power and torque down low launches my car like you wouldn't believe out of the hole.

    That being said, my car prior to the header install, was making 256.3rwhp and 278.6rwtq.

    My car, post header install is now making....

    285.7rwhp and 293.5rwtq!!

    That's peak, 29hp and 15tq!!

    What's important to examine is that although the peak numbers are high, there are even higher spreads in the torque and power bands throughout the curve. There's almost a 50hp spread on power at 6000rpm!!!

    All in all, what a kick ass investment!!
    Attached Images Attached Images
    Last edited by Logan; 09-23-2003 at 12:50 PM.

  2. #2
    nick filippides Guest
    Logan, Im real happy to hear great news. Much like the 4V Mark VIII, the headers made a huge difference. 29hp at the wheels is more like 45-50hp at the crank. I'm estimating 3-4tenths drop in et and 2-3mph increase at the track. Logan I'll bet dollars to donuts that your gas mileage will improve as well. Thanks for your help. Nick "Kook's Headers"

  3. #3
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    Woooooow!

    Thanks for posting the info.

    Let us know about the install, how difficult? Can an occasional wrench turner master it?

    Any welding, air wrenches or special tools required?
    Last edited by sailsmen; 09-23-2003 at 01:43 PM.
    1/4 Mile Time 11.542 @ 121.19 MPH
    195,000 Miles & 275+ Runs Down the 1,320
    541.57 RWHP & 476.64 RWTQ on DynoJet
    Tuned by Aric at Injected Engineering
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  4. #4
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    Good going Logan.

    Can you post a pic of your engine with the headers?

    Also, how long did they take you to install?


    2004 BLACK MERCURY MARAUDER
    SCT
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    PHP Intake Spacer
    Cobra Ported Manifolds
    Flowmaster 50's
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    Steeda Underdrive Pulleys
    Rear sway bar



    1969 GREEN MACH I MUSTANG GT
    351 Windsor
    Shelby Cam
    Shelby Tri-Y headers
    Ported and polished heads
    10.5:1 Domed pistons/rods
    Balanced and blue-printed
    Offenhauser Intake
    NOS plummed under intake (8 fuel injectors, 8 NOS injectors)
    Art Carr TC
    Tranny shift kit
    Dual ignition with MSD
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    Bought car when I was 16 and still have it

  5. #5
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    Patience... I'm writing up the full report, with pics. It'll be up on Thursday.

    I will say in advance though that I'd recommend they be installed by a competent shop. From the time we pulled the car in, to the time we pulled it out including welding up an entire exhaust system was about 12 hours labor. About 8 hours on install, 4 on welding, pipe bending and exhaust assembly.

    If you give the installer a copy of the review I'm working on, he should be able to save himself a couple hours by not having to relearn the install.

    Last edited by Logan; 09-23-2003 at 02:47 PM.

  6. #6
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    Logan,
    Awsome numbers I'm just pissed I didn't get a ride. Thanks for a great weekend
    John
    2003-300A
    Trilogy #8 with Custom Pulley Produces 12.4psi of Boost
    407 RWHP and 384 RWT
    Best 1/4 Mile 12.028 @ 117.01mph
    From Lidio: Trilogy #8 install & Custom Tune, Custom Pulley, Chip, Accufab Throttle Body, Baer Claw Front Calipers with Crossdrilled & Slotted Rotors All Around, Custom 2 X-Pipe, 3 Chamber Flomaster Mufflers, Widened Rear Rims with 305 Nitto NT-555R Extreme Drag Radials, Auburn High Performance Posi.
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  7. #7
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    We can't pass smog here in California with those, can we?
    2003 Mercury Marauder
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  8. #8
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    Not sure if Kook's has a Carb number on them, give them a shout and ask.

  9. #9
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    That's more like it! For so long all we heard was "headers will not help produce power in a NA MM". Just been anxiously waiting for somebody to prove it. Thanks. (I think... now that's more money I gotta spend).

    BTW, I got a quote on a Bassani SS x-pipe. It looks sweet and costs less. I'm thinking of trying the Kooks/Bassani combo. So many possibilities!
    Thanks to Darrin @ BC Automotive:
    $1800 and it was worse than when he started!

    Brian (FordNut) FPG # 1458 of 7838
    03 MM 300A (Lotsa mods, 130k mi) was 303rwhp/318rwtq N/A
    then 476/410 D1SC ProCharged on stock block
    then 660/555 D1SC PC on 5.3 wet sleeved Teksid alum big bore stroker
    then 365/369 N/A on 5.3 wet sleeved Teksid alum big bore stroker
    Now 751/617 3.4L Whipple on 5.3 Boss5.0 iron big bore stroker

    03 MM 300B Silver (Mostly stock, originally wife's car, 370k mi) FPG # 7053 of 7838 or 49 of 417 SB
    03 MM 300B Silver, Stock, wife's next one, 136k mi FPG # 7134 of 7838 or 89 of 417 SB
    04 MM Silver, Stock, on standby 85k mi, FPG # 1212 of 3214 or 432 of 997 SB
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    Mods listed here (some items not current): FordNut's Mods

  10. #10
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    I'll just say that the Kook's X is worth every penny. It may not be "pretty" as the bassani unit, but having had both, I'll say the Kook's unit is technically superior. They put ALOT of manual handiwork into the interior of the Kook's X.

    I wish I took pictures of the inside of the kook's X... Seeing is believing.

  11. #11
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    Headers

    Logan - Thanks for the report. Waiting to see pix.
    2003 Marauder 300B,
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    ----- John

  12. #12
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    WOW, LOGAN! THOSE NUMBERS/CURVES ARE AMAZING!!! Yeah--"ditto" what FordNut said!!! I know you're busy writing the full report (and thank you for doing that), but as to the factory cats, did you replace two/delete two, or did you replace all four factory cats with the Magnaflow high-flow cats? Us California guys want/need/deserve that kind of header performance, too! Your exhaust MUST'VE gotten LOUDER and BEEFIER sounding too, right?!?!?!? In fact, the damn thing must have a screamin' ROAR to it now, eh? Which mufflers did you have again? Incredible post, Logan!!! Incredible!
    Last edited by studio460; 09-24-2003 at 03:16 AM.

    2003 Mercury Marauder 300B, matte-black, S55 taillights.
    B&M transmission/Precision Industries TC; Eibach-lowered; Addco rear anti-sway; Metco rear control arms; Steeda UDP; 180 'stat.

  13. #13
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    I believe the secondary units are simply resonators, not convertors. I went with two High Flow Magnaflow Cats, and welded the secondary O2 sensors right behind them, no codes have popped, so it must be working just fine.

  14. #14
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    AAGGHHH!!! I can't wait to get mine installed!! Yippeeee!!!
    '03 300b - all the bolt-ons (SOLD)
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  15. #15
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    Well, Logan, that sounds damn fine to me, then. Aww, to Hell with passing California emissions . . . I've got four years on a new car until I have to smog it, right? Damn, those Kook's headers and X-pipes got me all excited now . . . Just think how great the car's gonna run once you get a blower on there too! Can't wait to see your pics and descriptions of your install, Logan! Thanks for doing all the legwork on this one! And THANKS for getting us the club discounts from Kook's!
    Last edited by studio460; 09-24-2003 at 06:12 AM.

    2003 Mercury Marauder 300B, matte-black, S55 taillights.
    B&M transmission/Precision Industries TC; Eibach-lowered; Addco rear anti-sway; Metco rear control arms; Steeda UDP; 180 'stat.

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