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SuperCharger Boost Numbers..?

Discussion in 'Performance and Tuning' started by AWF ROWD, Nov 1, 2013.

  1. Nov 1, 2013 at 5:57 PM
    #1
    AWF ROWD

    AWF ROWD [OP] ~~I'll just put the tip in...~~

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    40.102° N, 82.804° W
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    TRD Supercharger, Walbro 255 FP Upgrade, aFe Stage 2 si CAI, TRD Acrylic cover by Coupe ADD 1 OIL Catch can/SS hoses, TRD cat back exhaust, URD 2.8" Stealth pulley, 3" lift, Toytec/Bilstein C/O's, Toytec Progressive AAL's, LR UCA's, 5100 Rear Billies, Bi-Xenon HID BHLM Retro's w/ Halos RED LINE Tuning Hood Rods Swaybar Relocate, Line X'd Bull Guard/Step, Hitch, Craven Speed Dual Gauge mount, AEM Boost/AFR Gauges, Windows 20% tint, Weather Tech deflectors, GrillCraft upper and lower, Tacoma Raptor letters, LED Interior/Exterior lighting, Lund 6" Color Matched Oval Side Bars, Webasto 700 II sunroof, Heated Two toned custom leather TRD logo'd, Kenwood Multimedia 6990 HD head unit ,JL Stealthbox sub, Hertz Component speakers,, Entire cab damped with hushmat, Viper Security/Remote start, Weather Tech Liners, Blackened exterior LED Lights, Undercover Top w/LED's, Carbon fiber TRD windshield decal,, TRD stitched leather shift knob, TRD steering wheel emblem,
    What kind of PSI readings are you gettin' outta' your S/C..??!
    I have the 4.0 S/C in a '13, and was getting 5-6ish readings off my AEM Digital gauge @ WOT....I put on the Stealth URD 2.8"pulley, and now bouncing around 8..(even saw 9 pop up a few times when the weather was cool).. curious if any of you have the 2.55"... and PSI #'s with it....
     
  2. Nov 3, 2013 at 1:15 PM
    #2
    BradyT88

    BradyT88 Skinkwerks Rockware & Fabrication!!

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    Skinkwerks armor and a lot of other stuff!
    I don't have an S/C so I have no numbers to offer, but this is going to vary greatly depending on elevation as well.

    Example from another thread:
     
  3. Nov 3, 2013 at 1:58 PM
    #3
    memario1214

    memario1214 Vivid Illumination Vendor

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    Thanks Brady :)

    OP, tacomaworld isn't generally the place for real performance related questions. You're generally better of over at XRU. However, a few of us are boosted and have some knowledge on the subject. With the 2.55" pulley you will probably see numbers in the 12-13 range if you are seeing nearly 9 with the 2.8.

    However, you can't just slap that pulley on there and hope for the best. There are a lot of things that will need to be done FIRST. If you haven't got a new fuel pump yet that would be step one. The Walbro 255 won't cut it, you'd need something bigger than that even. Youll need larger injectors... the stock TRD ones barely handle the 2.8. You will need advanced fuel management as the stock reflash won't handle the additional boost. At that point you'd be smart to consider some sort of engine building as well to support the additional power. Last but not least you will likely at the very least need the valve body upgrade for your transmission.

    I may be forgetting something but I'd just like to point out that the jump from the 2.8" to the 2.5" is quite a big one, and you are assuming quite a bit more risk as well... I'm not saying don't do it, but just weigh all the costs involved.
     
  4. Nov 3, 2013 at 2:05 PM
    #4
    BradyT88

    BradyT88 Skinkwerks Rockware & Fabrication!!

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    :facepalm: Didn't think to mention XRU. haha

    I thought about mentioning getting forged pistons and rods, but I have no idea when you would start to approach that area, so I didn't want to say stuff I don't know. haha But after seeing you mention all that you have, I would say forged rods and pistons are a must at that point or you will blow your motor...
     
  5. Nov 3, 2013 at 2:09 PM
    #5
    memario1214

    memario1214 Vivid Illumination Vendor

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    Here, I will put together a parts list right now for you to put it in perspective... Gimme just a few min.
     
  6. Nov 3, 2013 at 2:27 PM
    #6
    memario1214

    memario1214 Vivid Illumination Vendor

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    PARTS LIST that will get the most out of your truck while still keeping it somewhat reliable:

    Supercharger Pulley: $162
    S/C Snout Cutter: $110
    Y- pipe: $301-469
    New Intake: $400
    Headers: $500
    Engine Management (URD or AEM): $1800
    Hi-Flow injectors + Harnesses: $440
    OR
    7th Injector Kit: $580
    New fuel pump: $150
    Rods and Pistons aren't a terrible idea either: $1800
    Valve Body Upgrade: $600

    TOTAL: ~$6400

    So as you can see there's a little bit to take on when it comes to switching down to the 2.55". If you are searching for just a bit more there are some people who have gotten away with going to the 2.7" with just the FPR mod over what you have now and are still on the TRD reflash. The mod helps maintain fuel pressure at all times.

    The voice of reason tells me to tell you to bank that money and enjoy the truck for what it is. A FAST PICKUP. Take that money and put it towards a car that can actually utilize the power and put it to the ground, and as I am sure you have come to realize these trucks can't. I recently had the same thoughts as you, but after realizing all that goes into giving the truck maybe an extra 40 horse I decided it just wasn't worth it and I would turn my sights to a weekend warrior vehicle... Do what you will I just wanted to inform you.
     
    Last edited: Nov 3, 2013
  7. Nov 3, 2013 at 3:01 PM
    #7
    Justus

    Justus fucks not given

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    6.5 stock pulley, tried and true analog gauge.
     
  8. Nov 3, 2013 at 4:46 PM
    #8
    Torspd

    Torspd Tor-nication

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    Always remeber, elevation and free flow from exhaust will affect the reading.
     
  9. Nov 3, 2013 at 4:51 PM
    #9
    memario1214

    memario1214 Vivid Illumination Vendor

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    You shut your whore mouths I got this! :p

    I knew you guys would be here, welcome! OP, anything that I don't know these two gentlemen can certainly fill in the blanks.
     
  10. Nov 4, 2013 at 8:30 AM
    #10
    Vassily28

    Vassily28 Well-Known Member

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    2011 with TRD SC, DTLT headers, TRD CAI 1st gen with AFE ProDryS, TRD exhaust, URD MAF controller (WOT AFR 11.3-12.0), Inoovate AFR gauge and Boost Gauge, OEM FPR mode.

    Stock pulley : 5.5-6 psi.
    URD stealth 2.85" : 7.5 psi (dyno: 298 RWHP and 326 lbs)
     
  11. Nov 4, 2013 at 11:13 AM
    #11
    Torspd

    Torspd Tor-nication

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    Haha. You got this.
     
  12. Nov 4, 2013 at 11:16 AM
    #12
    Lucario Runner

    Lucario Runner Resident SUV racer

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    ^whore mouth. :devil:
     
  13. Nov 4, 2013 at 11:19 AM
    #13
    Torspd

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  14. Nov 12, 2013 at 1:27 PM
    #14
    AWF ROWD

    AWF ROWD [OP] ~~I'll just put the tip in...~~

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    TRD Supercharger, Walbro 255 FP Upgrade, aFe Stage 2 si CAI, TRD Acrylic cover by Coupe ADD 1 OIL Catch can/SS hoses, TRD cat back exhaust, URD 2.8" Stealth pulley, 3" lift, Toytec/Bilstein C/O's, Toytec Progressive AAL's, LR UCA's, 5100 Rear Billies, Bi-Xenon HID BHLM Retro's w/ Halos RED LINE Tuning Hood Rods Swaybar Relocate, Line X'd Bull Guard/Step, Hitch, Craven Speed Dual Gauge mount, AEM Boost/AFR Gauges, Windows 20% tint, Weather Tech deflectors, GrillCraft upper and lower, Tacoma Raptor letters, LED Interior/Exterior lighting, Lund 6" Color Matched Oval Side Bars, Webasto 700 II sunroof, Heated Two toned custom leather TRD logo'd, Kenwood Multimedia 6990 HD head unit ,JL Stealthbox sub, Hertz Component speakers,, Entire cab damped with hushmat, Viper Security/Remote start, Weather Tech Liners, Blackened exterior LED Lights, Undercover Top w/LED's, Carbon fiber TRD windshield decal,, TRD stitched leather shift knob, TRD steering wheel emblem,
    ..
    Thanx Mammary for puttin' together the list...I'm obviously not gonna wrap that kinda' coin into those MOD's just to gain a coupla ponies in a pickup truck..just like seein' what the boys have done to max out their Taco's...stickin with the 2.85", TRD Cat Backs Walbro255, FPR, to get what I can outta' this puppy.....Now my Prius is a whole different ballgame....(48,at the wheels,,lookin' for 50..any ideas..?):burnrubber:
     
  15. Nov 12, 2013 at 2:07 PM
    #15
    memario1214

    memario1214 Vivid Illumination Vendor

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    Throw the batteries out
     
  16. Nov 12, 2013 at 3:55 PM
    #16
    AWF ROWD

    AWF ROWD [OP] ~~I'll just put the tip in...~~

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    Actually could use 'em for my Viper Remote ...been kinda' slo respondin' here lately...
     
  17. Nov 13, 2013 at 6:19 PM
    #17
    TRON

    TRON Well-Known Member

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    Low elevation and stock exhaust starting with manifolds back; i guess that could happen 9 psi on 2.8 pulley...:cool: I assume you don't have the d-vvti engine and tvs trd blower cause you have the 2.8 pulley...

    When does the d-vvti engine start for the tacoma trucks? 2015??
     
  18. Nov 13, 2013 at 6:27 PM
    #18
    memario1214

    memario1214 Vivid Illumination Vendor

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    No one knows. And probably not.
     
  19. Nov 13, 2013 at 6:36 PM
    #19
    AWF ROWD

    AWF ROWD [OP] ~~I'll just put the tip in...~~

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    TRD Supercharger, Walbro 255 FP Upgrade, aFe Stage 2 si CAI, TRD Acrylic cover by Coupe ADD 1 OIL Catch can/SS hoses, TRD cat back exhaust, URD 2.8" Stealth pulley, 3" lift, Toytec/Bilstein C/O's, Toytec Progressive AAL's, LR UCA's, 5100 Rear Billies, Bi-Xenon HID BHLM Retro's w/ Halos RED LINE Tuning Hood Rods Swaybar Relocate, Line X'd Bull Guard/Step, Hitch, Craven Speed Dual Gauge mount, AEM Boost/AFR Gauges, Windows 20% tint, Weather Tech deflectors, GrillCraft upper and lower, Tacoma Raptor letters, LED Interior/Exterior lighting, Lund 6" Color Matched Oval Side Bars, Webasto 700 II sunroof, Heated Two toned custom leather TRD logo'd, Kenwood Multimedia 6990 HD head unit ,JL Stealthbox sub, Hertz Component speakers,, Entire cab damped with hushmat, Viper Security/Remote start, Weather Tech Liners, Blackened exterior LED Lights, Undercover Top w/LED's, Carbon fiber TRD windshield decal,, TRD stitched leather shift knob, TRD steering wheel emblem,
    4.0 TRD S/C comes with the 3" pulley..you can goes as small as that before having to do any Fuel rail and ECU Mods?(reflash), as you would with the 2.7"
    and the 2.55"...With all my other mods, and the TRD cat back exhaust in right conditions I have flashed a 9 here and there,,,,more busy watching AFR gauge at WOT....!!
     
  20. Nov 13, 2013 at 7:25 PM
    #20
    TRON

    TRON Well-Known Member

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    TRD reflash + FPR mod can take the nst kit and 2.8 which has a higher ratio for more boost than the 2.7 apr pulley alone. This combo has been tested and driven harder than most could fathom.

    9 psi seems high for the 2.8 alone; but looking at your mod list seems you only upgraded the catback, which the stock catback is the least restrictive of the 3 exhaust components so it may be possible... LIke Torspd was saying, more restrictive the exhaust, higher the psi for boost;)

    you're right though, afr is very important; if you still have the stock exhaust mani's, where you tap the sensor in for readings?
     
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