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  1. #1
    J "The Stig" B 94vtirozguy's Avatar
    Generation
    4th Gen
    Model
    VTEC
    Join Date
    Sep 2005
    Location
    Victoria
    Posts
    2,982

    4th Gen Official DYNO thread - NA

    Post Away people.

    List your mods if you want, however no comments, and posts without a DYNO chart will be deleted. Also it's better if they are SAE corrected.
    ------------------------------------
    Winton : 1:48.2
    Sandown : 1:38.3

  2. #2
    Senior Member chris_melba's Avatar
    Generation
    4th Gen
    Model
    Si
    Join Date
    Jul 2006
    Location
    Australian Capital Territory
    Posts
    750
    Here's mine



    Red line (105kW) is with air box removed, lower line (97kW) is stock. H23A 1993. Since then I've done I/H/E so I'm hoping to get it dyno'd again soon

    Update:

    Just got redyno'd at 103.8 killer wasps. I'm pretty happy with that, a lot of people on the day mentioned that this dyno is a bit more conservative, so perhaps 10-15kW gain from my mods
    Last edited by chris_melba; 5th September 2009 at 08:04 PM.

  3. #3
    Senior Member Cam's Avatar
    Generation
    4th Gen
    Model
    VTEC
    Join Date
    Oct 2007
    Location
    Victoria
    Posts
    543

  4. #4
    Regular Member
    Generation
    4th Gen
    Model
    VTEC
    Join Date
    May 2006
    Location
    Queensland
    Posts
    205
    Engine Mods
    Engine KMS - 300,000+kms, since Rebuild approx 20,000kms
    Simota air intake with K&N filter
    Cat back exhaust with varex muffler


    First Run varex closed
    Second run varex open






    Same engine mods, but have VAFC installed
    not sure what happend with the first run - maybe it was not reset.
    both runs done with exhaust open


  5. #5
    Gold Member Pacman's Avatar
    Generation
    4th Gen
    Model
    Vti-R
    Join Date
    Sep 2008
    Location
    Queensland
    Posts
    2,698
    Well, nobody seems to have a chart up....?
    It's my first EVER dyno run.
    No real mods to the engine. Just an intake and exhaust.
    http://www.preludeaustralia.com/foru..._view&id=12025
    Link to my garage.^^^^

    When words fail, VTec speaks!

    Quote Originally Posted by EXO8IC View Post
    My car is a twin turbo and has a blow valve with another little valve thing attached which silences that WOOSH (which I HATE) but it makes more of a strange sucking noise which can be heard quite loudly from my vents on the bonnet. It's quite odd...

  6. #6
    Junior Member
    Generation
    4th Gen
    Model
    VTEC
    Join Date
    Mar 2010
    Location
    Other
    Posts
    3
    H22A7 engine swap, OBD1 p13 ecu with TCS, Janspeed catback exhaust, Japspeed decat, the dyno is before I installed a Type S intake.


  7. #7
    Junior Member Penguin King's Avatar
    Generation
    4th Gen
    Join Date
    May 2007
    Location
    New South Wales
    Posts
    55
    This is my first run from 2008
    1993 JDM H22 Bluetop
    Mods included:
    K&N Podfilter
    DC Headers with 2.5 Inch Exhaust System (with mandrel bends)
    Skunk2 Cam Gears

    Have not been on a dyno for a while now so no idea what its making today, probably alot less
    Attached Thumbnails Attached Thumbnails Prelude Dyno 08 - Copy.JPG  
    Power Hammond, Is everything - Jeremy Clarkson

  8. #8
    Junior Member H22A LUDE's Avatar
    Generation
    4th Gen
    Model
    BB1 Si Vtec
    Join Date
    Sep 2009
    Location
    Other
    Posts
    7
    Two plots I can contribute from my 1991 BB1 H22A with ~240k kms (note- automatic gearbox):
    First plot: Click image for larger version. 

Name:	Plot 1- H22A.jpg 
Views:	10 
Size:	84.8 KB 
ID:	7585
    94.6wkw---Blue line mods (was running way too lean...)
    Mods:
    CAI- Simota filter
    Vision ignition leads
    Iridium plugs
    PowerPro Euro muffler
    Gizzmo CAMFC

    111.6wkw---Red line mods= same as blue but with:
    D1Spec FPR (no vac fuel press = 44psi)
    CAT knocked out
    Replaced LMAs with spring type
    Modified IAB valves to open at 3.5k rpm
    SAFCII- bum tuned by me
    AEM UEGO wideband


    Second plot Click image for larger version. 

Name:	Plot 2- H22A.jpg 
Views:	12 
Size:	91.1 KB 
ID:	7584
    127wkw---Red line mods- same as red line in plot 1 above but with:
    Hytech-replica header (also scraped out the carbon build-up from the exhaust ports)
    Full 2.5' exhaust (still PowerPro muffler)
    Ignition advance reset to stock, fuel pressure increased marginally, removing ~10-24 SAFCII units and using 98 Octane. Datalogged the AEM and did many second gear pulls for tuning, but stock p13 maps are crap.lol.
    Last edited by H22A LUDE; 8th January 2013 at 02:19 PM.

  9. #9
    Junior Member H22A LUDE's Avatar
    Generation
    4th Gen
    Model
    BB1 Si Vtec
    Join Date
    Sep 2009
    Location
    Other
    Posts
    7
    Been a while, some more dyno plots to throw up for reference. Different prelude to the one above- 1992 BB4 manual with 272k kms.

    In 100% stock trim (252k kms):


    Power when stock (New Iridium plugs = only change):
    159whp @ 6800rpm with ~ 600wnm @ 5400rpm

    Current power:
    194whp @ 7000rpm with ~ 680wnm @ 5000-6500rpm (note- there was a dyno inbetween stock and the current- IHE + Crome tune only)


    Hence, a net gain of 26wkw/35whp following (done on the same dyno, 1.5 years apart):

    Custom CAI with Blox velocity stack and filter
    70mm Skunk2 T/B- port matched 70mm tapering to 65mm.
    Mildly ported P13 intake manifold with two IAB plates- one functional and one without IAB valves and Blox phenolic gasket.
    Rosko EGR blockoff plate + EGR delete
    Vision ignition leads
    D1 Spec FPR (fuel pressure ~53psi no vacuum)
    Hytech replica header (no collector mod)
    Custom 2.5" exhaust (no cat, 1 resonator, mandrel but in sections welded together)
    Exedy OEM clutch (no gain expected)
    Aircon delete
    SAFCII, AEM UEGO and Crome tuned P72 (Vtec at 4700, unsure of IAB engagement rpm; further tuned using wideband, SAFCII and FPR as extra mods were made).
    And 16" BBS RG rims (fitted with no name tyres.lol).

    Still more in it, should break 200whp with just boltons without too much trouble.

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