1997 E36 328 sport only made 213bhp max HELP!! - Page 2

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Thread: 1997 E36 328 sport only made 213bhp max HELP!!

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    #11
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    For them mods, I would expect at least 220bhp, maybe 230bhp.

    Get the codes read - There might be a fault stored that indicates where to start.

    Also get a compression test done.

    Mines done 140,000miles, and when I do my M50 manifold conversion and remap, I expect an absolute minimum of 220bhp. My compression test showed all cylinders at ~205psi, so with that in mind, I expect good results.
     
     

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    #12
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    You should be putting out around 225-230bhp with those mods.

    The dyno plot looks a bit odd with that dip. Something looks wrong.

    Did they take your M3 lsd ratio into account? I also notice the environmental temp has gone up 5 degrees in the 'after' plot which will alter the result.

    Did the people who sold you the Unichip do the rolling road run?

    I would get it on to another dyno.
     
     

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    #13
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    Quote Originally Posted by furry0786 View Post
    Guys input needed!!
    My 328 sport only made 213 bhp/190 lbs/foot torque on a dyno run at Dastek on friday past.4th gear full pelt!! should this have been done in 5th and if so how much am i missing? was a bit on the warm side at the dyno at 24.5 c but would that have made a difference also?
    Should have made alot more in my opinion but feels damn quick right through the rev range and pulls hard all the way to the limiter.
    mods done-
    m50 manifold & throttle body
    US s50 cams
    m3 lsd
    k&n cai
    scorpion exhaust
    unichip

    Has original nikasil block but running sweet at 124k with nothing to indicate otherwise-starts on the button/doesen't use oil etc etc.
    Gonna get a compression test done in the next few days just for peace of mind.
    What am I missing?? or has normal wear & tear left me well short.
    Although I am happy with the way the car delivers power as a paper exercise extremely dissapointed!!
    Any thoughts??
    what is the deal with your torque readings? They are all over the place.

    I mapped my 325i non vanos to 206hp the other day so you should for sure be seeing more.
     
     

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    #14
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    There's definitely something wrong - Look at the shape of the curves, they should be as smooth as possible.

    The torque curve in particular is all over the place. I'd say either a mixture problem or an ignition component breaking down, something is definitely not right there.

    Could also have had some slight wheel slippage on the rollers - one of my old cars did that, you'd not know by looking at the car when it had it's run, but produced a graph which looked very similar to that.
    ~ Steve

     
     

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    #15
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    well, just a thought, but maybe the guy from the dyno used the wrong percentage for the transmission loss. your bhp is calculated with a 20% train loss. i believe the loss for e36 is 24%, or so the guy from where i tested my car said. and with a 24% loss, you would be at 220bhp, which sounds a lot more like it, for your mods.
     
     

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    #16
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    cheers to all who have posted.
    chap on dyno advised she was running a bit lean.
    fuelling adjusted after initial run.
    pre unichip being fitted torque was all over the place and had a slight lumpy idle but I had initially put that down to cams.yes agree that the torque curve should be a lot flatter and not look like the himalayas lol.will start with a diagnostics scan and see if anything is chucked up and use that as a base point.
    will get a compression test done just for piece of mind and he did say bar the fuelling she was running really well with no other issues highlighted.
    fuel quality might be an issue as i was running a little late and ended up feeding her 30 litres of Murco super!! probably not the best but was the only thing near by.

    would a flat out run in 5th of made any difference? as the run was done in 4th and felt very warm in the dyno chamber although the fan was going flat out with cool air.
    Last edited by furry0786; 02-05-2010 at 23:51. Reason: incorrect info
     
     

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    #17
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    Quote Originally Posted by furry0786 View Post
    cheers to all who have posted.
    chap on dyno advised she was running a bit lean.
    fuelling adjusted after initial run.
    pre unichip being fitted torque was all over the place and had a slight lumpy idle but I had initially put that down to cams.
    after unichip fitted and tweaked torque does seem to have a steady curve all the way up.
    will get a compression test done just for piece of mind and he did say bar the fuelling she was running really well with no other issues highlighted.

    would a flat out run in 5th of made any difference? as the run was done in 4th and felt very warm in the dyno chamber although the fan was going flat out with cool air.
    looking at your AFR graph (and I'm by no means an expert) - it doesn't look right (does anyone have another 328 AFR graph to compare it to?).. it looks as though your car starts off very lean and then fuelling is adjusted to richen the mixture out.. there should really be as big a range on the lean to rich change.. most cars I've had dyno'd have been fairly static (or changed around 3/4 parts max)

    I would get the codes read as there might be a problem with your O2 sensor(s) or cat..

    4th gear is normal for a dyno run (they normally put the car in the gear that maximum speed is achieved in iirc)

    EDIT: completely different car - but for comparison have a look at my MR2 graph:



    thats a pretty good example as to how fuelling on most N/A engines should look - i.e. it's fairly static/horizontal around 12:1 or 13:1 and the richens up towards the higher rev range to cool combustion temps..

    * 2016 BMW M135i LCI (F20): current
    * 2016 Mercedes Benz GLA 200d AMG Line (X156): current
     
     

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    #18
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    cheers buddy
    will have them checked out and see where we go
     
     

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    #19
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    Make sure you get them checked on a good machine such as Autologic or GT1. The Snap On and a few others will miss some of the sensors.
     
     

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    #20
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    i have never been on a dyno so excuse me if i sound stupid but can you dyno an automatic car accuratly?
    also if the car is running lean in furrys case, how do you alter this to run perfect? i've only had this done on my old mini which was carbs so it was simple.
     
     

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