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  1. #1
    Authorized Vendor Justin@VMP's Avatar
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    2011 GT500 Pulley & Tune upgrade 545RWHP/534RWTQ

    A local guy brought his 2011 GT500 over with 1500 miles for a pulley swap and dynotune. I tuned the car first, to see how the 11s responded. We saw a nice gain of 36RWHP and 28RWTQ. Most 10s-11s will see 20-40RWHP gain from tuning, the gains aren't as large as the 07-09s. This is due to 10-11 having knock sensors which allows a more aggressive tune from the factory.

    We swapped the pulley on later in the afternoon when it was getting warmer, we saw a 3-4psi increase throughout the curve and a peak TQ gain of 42RWTQ and a peak HP gain of 25RWHP. Had the conditions not gotten worse the peak HP gain would have been better. You can also see that the car is now starving for air up top, with a peak HP gain from the pulley swap of around 30-40RWHP in the 5000RPM range, it tappers off up top due to the need for a larger throttle body. We would get 10-20RWHP from a TB swap on this car.

    Overall we saw a 61RWHP and 70RWTQ gain from a pulley swap and custom tune. I sell this 2010-2011 upgrade package on my website:
    VMP Tuning - Buy Ford SCT & GM Custom Handheld Flash Tuners Performance Economy Towing: Pulley & Custom Tune Upgrade Package for 10-11 Shelby GT500



    Stock look 2.59" pulley:

    Larger 90mm replacement idler installed below IC tubes to take up slack and improve wrap.

    The 2010-2011 fusebox has the IC relay and fuse built in, the rear most little relay is for the IC pump, you can install a jumper wire diagonal in it to run the IC pump while the car is on the dyno:




    Since you are only making quick WOT hits on the dyno, the IC system really never has a chance to fully circulate and cool. Also since the car is not moving the only airflow is provided by a fan. Jumping the IC pump and sitting a fan in the front of the car helps to keep temps stabil and prevents major heat soak from run to run.
    Last edited by Justin@VMP; 09-20-2010 at 11:40 AM.
    Justin Starkey [email protected]
    VMP Tuning- 5.0L, GT500 & 03/04 Cobra Tuning Specialists

    2013 Shelby GT500 with VMP Upgrades 700rwhp/713rwtq
    2012 Boss - stock for now

    2011 Mustang GT 5.0L Auto with Roush 2.3l TVS Supercharger 9.79 @ 140 1.4 60', wife's car

    2007 Shelby GT500 Red/Silver
    Highest HP with 2.3L TVS Supercharger 816RWHP
    Mods: VMP 2.3L TVS Supercharger, VMP Dyno-Tune, 2.5" Upper, VMP 72MM TB & Elbow, IW 15% OD balancer, 80s, Dynatech 1 7/8" LTs

    2006 Mustang 4.0L with Vortech @ 15psi & 6spd, wife's car
    2000 Mustang 3.8L A4 TT 450RWHP and 10.9@127

  2. #2
    Yes, it's stock. rw95gt's Avatar
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    Sweeeet! I know what I'm doing to my car this winter. Thanks for sharring. So with the 2.59 and your idler pulley you have no belt slip? Also can you re use your factory belt after the pulley swap?
    04 Cobra Sold
    10.84 at 126 Ported Eaton

    11 GT500 sold
    11.27 at 122 Fastest stock gt500 with slicks only
    11.11 at 124 with slicks and skinnies only
    10.60 at 133 upper, lower, long tubes and home ported
    10.15 at 133(1.35 60ft) w/n20


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    1995 gts future race car with tags

  3. #3
    BEASTLY SHELBY GT500 TVS me32's Avatar
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    really nice gain. right on congrats

    2008 Shelby GT500
    2921 out of 6513 coupes
    132 of 314 Alloy Metallic

    Shelby Dash Plaque,FRPP TVS Super power pack ,Drag Pack,SVT handling pack,FRPP Cobra Jet TB/MAF/80lb injectors,J&M UCA,LCA,Adj.PHB,SFC,PH A/D,O/R H, DynoMax 3in,CHE, Shelby Rad/HE,VMP 2.59,KB BAP,L&M plenum,BMR KMEMEBER,AED CUSTOM RETURN STYLE FUEL SYSTEM.
    91/E85 tune by SHAUN AT AED
    700HP/700TQ ON E85
    10.78 @ 129MPH 1.644 60FT

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  4. #4
    Been there owned that nolyaw's Avatar
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    This sounds about right to me. Not trying to start anything, but how can lethal claim 100 rwhp increase with the same mods? Is their tune really that much better? I jsut don't get the disparity.

    This is a great little package. 60hp/70ftlbs for under $700? count me in. Any deal on the puller if you buy it all at once?

    I just paid cash for this bastard, so I am a little tapped.
    Last edited by nolyaw; 09-20-2010 at 02:35 PM.

  5. #5
    BEASTLY SHELBY GT500 TVS me32's Avatar
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    Quote Originally Posted by nolyaw View Post
    This sounds about right to me. Not trying to start anything, but how can lethal claim 100 rwhp increase with the same mods? Is their tune really that much better? I jsut don't get the disparity.

    This is a great little package. 60hp/70ftlbs for under $700? count me in. Any deal on the puller if you buy it all at once?

    I just paid cash for this bastard, so I am a little tapped.
    wheres the pic fo the new beast?

  6. #6
    Been there owned that nolyaw's Avatar
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    N/m
    Last edited by nolyaw; 09-20-2010 at 04:29 PM.

  7. #7
    Been there owned that nolyaw's Avatar
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    It says that I 'can't post attachments' for some reason. If I could, maybe I could figure out how to post some pics.

    Ah, shit I aint got no 500. I gots me a '78 Gremlin. It be clean doh.

  8. #8
    SVT God BigDan's Avatar
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    Great numbers guy's. Try and talk that customer into a Posi ported SC, plenum, and larger TB. I hear you guy's work together and I'd love to see what a 2011 is capable of with a ported SC and other bolt on's like lower puller and Torco or 100+ octane tune, all without upgrading to a TVS or TS. I know the 07-09 are good for 620ish with full bolt ons and ported SC. It would be nice to hit those number's with the stock 2011 exhaust instead of cat-less LT's .

  9. #9
    It is what it is! SmirkNOS's Avatar
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    BIGDAN, Just read my mind. Great point. I have an 09 and considering a Posi blower so I love to see a chart on the proted blower. Another thing. I have a JLT CAI. Would that be enough for a POSI blower and the new 2.59 pulley?

  10. #10
    Authorized Vendor Justin@VMP's Avatar
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    Quote Originally Posted by rw95gt View Post
    Sweeeet! I know what I'm doing to my car this winter. Thanks for sharring. So with the 2.59 and your idler pulley you have no belt slip? Also can you re use your factory belt after the pulley swap?
    No belt slip problems at all, I have been running GT500s like this for four years now.

  11. #11
    Authorized Vendor Justin@VMP's Avatar
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    Quote Originally Posted by nolyaw View Post
    This sounds about right to me. Not trying to start anything, but how can lethal claim 100 rwhp increase with the same mods? Is their tune really that much better? I jsut don't get the disparity.

    This is a great little package. 60hp/70ftlbs for under $700? count me in. Any deal on the puller if you buy it all at once?

    I just paid cash for this bastard, so I am a little tapped.
    If your car dynos lower than most, say 440rwhp, then you get to claim a bigger gain.

    The end result however will be the same, you will end up in the 525-550rwhp range.

  12. #12
    Authorized Vendor Jesse@MBRP's Avatar
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    Justin, did you see my dyno results with your Pulley/Tune and our full exhaust?
    Attached Images Attached Images  


    Sound Clips
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    http://www.youtube.com/watch?v=YbVec...vucc8kCoRNFd1g

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    http://www.youtube.com/watch?v=2Xp6D...vucc8kCoRNFd1g

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  13. #13
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    Quote Originally Posted by BigDan View Post
    Great numbers guy's. Try and talk that customer into a Posi ported SC, plenum, and larger TB. I hear you guy's work together and I'd love to see what a 2011 is capable of with a ported SC and other bolt on's like lower puller and Torco or 100+ octane tune, all without upgrading to a TVS or TS. I know the 07-09 are good for 620ish with full bolt ons and ported SC. It would be nice to hit those number's with the stock 2011 exhaust instead of cat-less LT's .
    I am making about 630 hp with high flow cats and I don't have long tubes. See sig below. VMP installed the parts and custom tune except I installed the flow cats and SVT1 catback.
    Posi Ported Blower
    2.6 Upper and Lowered Pulley
    VMP 67 TB
    VMP Ported Elbow
    JLT Air Filter
    VMP Custom Tune
    Lethal's High Flow Cats and SVT1's
    AFCO HE, Dynotech DS, SLP LL, LCA's, R Brackets

  14. #14
    Walkin' on Sunshine Shaker1's Avatar
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    Nice numbers, looks to be about 10 rwhp higher than the previous years, I would guess due to the EPAS?
    Last edited by Shaker1; 09-21-2010 at 11:33 PM.
    08 GT500 Alloy w/ Silver Stripes
    2010 Chrome Wheels w/ Nittos
    VMP 2.59 Pulley/JLT CAI/Lund tune
    FRPP Springs,KR Mufflers,Revan HE
    Roush UCA/BMR LCAs/BMR ADJ PHB

    2010 Atlantis Green SHO Loaded

  15. #15
    SVT God BigDan's Avatar
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    Quote Originally Posted by kent1 View Post
    I am making about 630 hp with high flow cats and I don't have long tubes. See sig below. VMP installed the parts and custom tune except I installed the flow cats and SVT1 catback.
    You are one of the member's I had in mind when I wrote my post. Nice numbers!

    How are your cats holding up and do you think they'd pass a sniffer test? So did you get Lethal's catted X or did you just replace your cats with theirs and keep your factory X?
    Last edited by BigDan; 09-22-2010 at 12:03 AM.

  16. #16
    BEASTLY SHELBY GT500 TVS me32's Avatar
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    Quote Originally Posted by BigDan View Post
    You are one of the member's I had in mind when I wrote my post. Nice numbers!

    How are your cats holding up and do you think they'd pass a sniffer test? So did you get Lethal's catted X or did you just replace your cats with theirs and keep your factory X?
    hey Dan its time for a.posi port an bigger tb an 2.59 pulley.

  17. #17
    SVT God BigDan's Avatar
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    ^ I know, I know..... Those are first mods on the list but i am hoping that Ford will soon offer a TSB for our 1-2 grind before I throw a pulley on it. My good friend today just said I could use his SCT for a while and I could get a custom AED dyno tune until he can get his 5.0L built up. I'd love the 2.59" pulley but i am wondering if its would be safer and easier to return to stock if I just went with a larger TB and dyno tune on top of my Airaid and SVT delete pipe kind like what Tasca Mod shop did in their first 2011 youtube video and got 520ish, or do you think i'd just be spending the $500 for the TB too early?

    If I had one of those Tremec 6 speeds that never grinded a day in its life, then I'd be on the phone with AED ordering up a pulley and talking about a Posi port but mine likes to grind 1-2 40% of the time.
    Last edited by BigDan; 09-22-2010 at 01:14 AM.

  18. #18
    Slower than most LarrysLightning's Avatar
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    It's pretty simple to return to stock.
    12.50 @ 109 10 lbs of boost

  19. #19
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    Justin- do you think the 67mm throttle body is enough or do you have to go bigger for this setup? Would be great to see the result after this mod is done!
    2010 Shelby GT500

    Stock for now

  20. #20
    Authorized Vendor Justin@VMP's Avatar
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    I'll answer several posts in one...

    The power is what we're seeing from some of the 07-10s too, so while the EPAS and bigger exhaust is supposed to help, i'm not sure it makes more than 5-10rwhp difference. We'll have to get some better weather, see some cars break in, and get a better idea of the HP spread. There is as much as 20rwhp variance from car to car and 20rwhp from the weather, so its hard to base everything off one car.

    The stock 60mm TB Is pretty well matched to the stock blower/stock pulley, it doesn't need much more air. I would do a pulley first, and then you start to need more air.

    A 62, 65, 66, 67 tb would be fine for a mild stock blower car.

  21. #21
    BEASTLY SHELBY GT500 TVS me32's Avatar
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    Quote Originally Posted by BigDan View Post
    ^ I know, I know..... Those are first mods on the list but i am hoping that Ford will soon offer a TSB for our 1-2 grind before I throw a pulley on it. My good friend today just said I could use his SCT for a while and I could get a custom AED dyno tune until he can get his 5.0L built up. I'd love the 2.59" pulley but i am wondering if its would be safer and easier to return to stock if I just went with a larger TB and dyno tune on top of my Airaid and SVT delete pipe kind like what Tasca Mod shop did in their first 2011 youtube video and got 520ish, or do you think i'd just be spending the $500 for the TB too early?

    If I had one of those Tremec 6 speeds that never grinded a day in its life, then I'd be on the phone with AED ordering up a pulley and talking about a Posi port but mine likes to grind 1-2 40% of the time.
    i would prolly just hold off, save the money get your fix, or breakin, what ever you wanna call it. then get the ported blower pulley/TB tune all at the Same time. spend money once.

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