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Thread: S14/S14a stage 3a map nearly ready

  1. #1
    Flamethrower Jez's Avatar
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    S14/S14a stage 3a map nearly ready

    Just been to the rollers to sort out the S14/S14a stage 3a ECU maps.

    Managed 347bhp and 360ft.lbs torque - this was at 1.4 bar peak dropping to 1.3 at the red line.

    The Nismo 555s were at about 90% duty.

    The spec of the car was:
    GT2871R turbo
    Profec B boost controller
    Z32 AFM
    Tubular manifold
    FMIC
    Uprated fuel pump
    Nismo 555s
    Apexi air filter

    With this setup the engine is about 300rpm laggier than a GT28RS but with a ~27bhp increase in power

    Heres the graph:

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    Nice figures Jez well done. Would it be wiser to go for 740cc injectors over the 555's or do u think the 555's will suffice.

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    Flamethrower Jez's Avatar
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    I think they're ok - I've never known an injector to fail. They're only at 90% at the top end of the rev range and the fuelling was fine

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    Clever stuff!

    I wonder just how cheaply you could have a 350hp S14 put together for nowadays?
    Big power on a budget.

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    Quote Originally Posted by Jez View Post
    I think they're ok - I've never known an injector to fail. They're only at 90% at the top end of the rev range and the fuelling was fine
    Was just thinkin that if I wanted to increase the power to around maybe 400bhp, would the 555's be able to cope. I think that they maybe be maxing out at that sort of power but I may be wrong.

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    Banned j4mes's Avatar
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    no chance for 400 on 555's

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    Guest jimmyd's Avatar
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    Sounds good Jez

    What a/r is the GT2871R? 0.64 or 0.86

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    Flamethrower Jez's Avatar
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    That was with the 0.64 ar housing (in stock BTW, £799.99)

    I think 350-360bhp is the most you can get from the 555s on a standard engine. You could get more if the engine was built with a lower CR and mapped to run leaner.
    Last edited by Jez; 11-02-2007 at 22:31.

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    Guest Crazy1's Avatar
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    How reliable do you think the engine would be running this set up?

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    Ohh you git.. must not buy must not buy must not buy!!

    It's amazing the difference a better turbo can make to your power... and that curve!! Silky!

    Rich

  11. #11
    Flamethrower Jez's Avatar
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    Quote Originally Posted by Crazy1 View Post
    How reliable do you think the engine would be running this set up?
    No idea to be honest - so long as det doesn't set in (the graph above was with no det at all) it should be ok
    Last edited by Jez; 11-02-2007 at 22:49.

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    Guest justbutts's Avatar
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    cheers for an excellent day out jez

    i am really happy with the results

    the car feels totaly different even though its a bit lagger than the gt28r it feels just right for round the town driving in the wet, you can really feel that boost come in at 4k and with my current car set up its really controllable in the wet, i dropped the turbo% down buy 4% on the boost controller, and the car seamed to like that a bit more in the colder weather last night.

    oh yeah didnt know what your driving style was like when we approched that car side by side, im used to my mates cutting in so thats why i braked early lol well impressed with the perfromance
    thanks once again mark

  13. #13
    Flamethrower Jez's Avatar
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    Cool - glad you're pleased
    The seemed to go very well on the way back

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    Guest justbutts's Avatar
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    Quote Originally Posted by Jez View Post
    Cool - glad you're pleased
    The seemed to go very well on the way back

    yes in dede i think if i had tweeked it down a bit sooner i might have been a teeny weeny bit closer still lol

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    Flamethrower Jez's Avatar
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    Get some cams and it'll go even better I reckon

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    Head Mod Scottie's Avatar
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    That's making it a really hard decision for some of us now, including me.

    I've been so impressed with the stage 2 setup and 555's that I just need to choose which trubo to go for...

    28RS, er 2871, no I need 28RS for low lag and great driveability, no I need the 2871 for that bit better power, no I need etc etc. You will be mostly responsible for me being institutionalised with all this going on in my head.
    2004 - on : 1999 S14a 398bhp 378lb/ft
    2010 - on : 2007 RX8 PZ
    1998 - 2004 : 1991 S13

  17. #17
    Head Mod Scottie's Avatar
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    Quote Originally Posted by Jez View Post

    Get some cams and it'll go even better I reckon
    And that doesn't help either LOL
    2004 - on : 1999 S14a 398bhp 378lb/ft
    2010 - on : 2007 RX8 PZ
    1998 - 2004 : 1991 S13

  18. #18
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    How about a 28RS and cams?


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    i am so tempted.....

  20. #20
    Flamethrower Jez's Avatar
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    Go on, you know you want to

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