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Thread: 335i/6 vs 540i/6 dyno overlay (dynojet)

  1. #1
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    335i/6 vs 540i/6 dyno overlay (dynojet)

    Hello all,

    I'm new to the forum. Just wanted to share with you all a dyno graph that I have of my 1999 540i vs my friends stock 2007 335i coupe.

    My dyno reading is in the red line and the graph is STD reading for both cars. Also my car was running a bit rich over 4.5k rpm.

    My car:
    STD:278whp 305wtq
    SAE: 268whp 296wtq

    frist two SAE runs for stock 335i were 251whp and about 270wtq. my friend couldnt believe it so we waited untill his car cools down some more and on 3rd run he posted some better #'s




    let me know what you guys think.

    BTW i have m60 intake, muffler delete, fan clutch delete, k&n filter and gutted airbox.
    Last edited by rad540i; 02-24-2013 at 08:50 PM.

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    You need at least 15 post to be able to post pictures. Until then, we won't be able to see them.
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    Interesting to see the graphs eventually if legit and indeed was done same day same dyno.
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    335i is suppose to put down ~275whp in factory form.
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  5. #5
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    Quote Originally Posted by Silverlight View Post
    You need at least 15 post to be able to post pictures. Until then, we won't be able to see them.
    Thanks, I'll work on that and update the thread.

    Quote Originally Posted by TriniSpeC View Post
    335i is suppose to put down ~275whp in factory form.
    It did in standardized reading.
    Last edited by rad540i; 02-24-2013 at 08:12 PM. Reason: Automerged Doublepost

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    Quote Originally Posted by TriniSpeC View Post
    335i is suppose to put down ~275whp in factory form.
    Graph state almost exactly 275 for the 335. Impressive results OP.

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    Was 335 stock?
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  8. #8
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    my butt dyno tends to believe this is close to correct. OP, are you near sea level? That's the worst case scenario for the 335i and the best case for the 540.
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    Interesting...

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  10. #10
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    Why STD rather than the normal SAE?

    What temp and altitude? The right combination will cause an over correction of the turbo car.


    /.randy

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    Yes the 335i is stock and he usually has a cobb tune but he wanted to see what it does stock. The temperatue for when 540i was dynoed was 55 deg.F and for the 335i it was 59 deg.F. Both cars were dynoed on a same dyno and the altitude of the city is 50ft above sea level. SAE gives lower reading so my friend decided to use STD for the printout. Two e39 m5 dynoed their cars and one dynoed at 303whp and other at 315whp.

  12. #12
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    did he dyno at all with the cobb tune?

    2001 330Cic/A in the same color combo is "Her" ride.

  13. #13
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    Quote Originally Posted by Justin517 View Post
    did he dyno at all with the cobb tune?
    No he didn't but we suspect he will dyno about 320whp and 360wtq. I have raced him befere with cobb tune and he just walks me .

  14. #14
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    Quote Originally Posted by Justin517 View Post
    did he dyno at all with the cobb tune?
    No he didn't but we suspect he will dyno about 320whp and 360wtq. I have raced him befere with cobb tune and he just walks me .

  15. #15
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    That's the kind of conditions that will cause over correction on a turbo motor. The correction assumes the temp will mean a denser charge, but the turbo density will be limited by the waste gate to about the same as normal. Probably the most accurate thing would be to compare your SAE to his Raw numbers, but you can't do that on the same graph with the Dynojet software.

    The other thing you could do is compare raw to raw, and say that this is what these two cars do today under these conditions. Tomorrow may be 20 degrees warmer and everything will change.


    /.randy

  16. #16
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    Quote Originally Posted by Cyrix2k View Post
    my butt dyno tends to believe this is close to correct. OP, are you near sea level? That's the worst case scenario for the 335i and the best case for the 540.

    Yes it was sea level. Sorry still getting used to replying.

  17. #17
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    Quote Originally Posted by rad540i View Post
    Yes the 335i is stock and he usually has a cobb tune but he wanted to see what it does stock. The temperatue for when 540i was dynoed was 55 deg.F and for the 335i it was 59 deg.F. Both cars were dynoed on a same dyno and the altitude of the city is 50ft above sea level. SAE gives lower reading so my friend decided to use STD for the printout. Two e39 m5 dynoed their cars and one dynoed at 303whp and other at 315whp.
    I few things. A) This is the best case scenario. The correction factor is valid for NA motors so yours should theoretically dyno the same no matter the temp or altitude. However, the correction does not hold up with FI motors particularly with altitude. Because you are under 1000 feet, it will make the 335i appear slightly down on power compared to what it actually makes (but not by much). B) I think your results are approx correct. The 335 is around 400#s less than the 540, and they run almost exactly 4/10ths faster in the 1/4 at low altitudes. C) This further verifies the M62(TU) is underrated and the S62 overrated.
    1985 325 - 5 speed - LSD - M50NV - MS2/extra - AEM UEGO - TiAL MV-R - 750cc injectors - HX35 - Blunttech Manifold - 3" exhaust
    1991 318i - 5 speed - M50NV - e36 rack - Smileys

  18. #18
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    Quote Originally Posted by rf900rkw View Post
    That's the kind of conditions that will cause over correction on a turbo motor. The correction assumes the temp will mean a denser charge, but the turbo density will be limited by the waste gate to about the same as normal. Probably the most accurate thing would be to compare your SAE to his Raw numbers, but you can't do that on the same graph with the Dynojet software.

    The other thing you could do is compare raw to raw, and say that this is what these two cars do today under these conditions. Tomorrow may be 20 degrees warmer and everything will change.
    His raw numbers are as I posted and mine corrected is 268whp. I raced my other friend with his stock e90 335i auto and walked him on the freeway. He had 1 passanger and I had 3 in my car. 335i is really fast when tuned also I'll post some videos since I just bought a gopro.

  19. #19
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    Quote Originally Posted by rad540i View Post
    His raw numbers are as I posted and mine corrected is 268whp. I raced my other friend with his stock e90 335i auto and walked him on the freeway. He had 1 passanger and I had 3 in my car. 335i is really fast when tuned also I'll post some videos since I just bought a gopro.
    Raw as in uncorrected? What are the uncorrected numbers for both? That will be a good comparison since they were dynoed back-to-back.
    1985 325 - 5 speed - LSD - M50NV - MS2/extra - AEM UEGO - TiAL MV-R - 750cc injectors - HX35 - Blunttech Manifold - 3" exhaust
    1991 318i - 5 speed - M50NV - e36 rack - Smileys

  20. #20
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    Quote Originally Posted by Cyrix2k View Post
    I few things. A) This is the best case scenario. The correction factor is valid for NA motors so yours should theoretically dyno the same no matter the temp or altitude. However, the correction does not hold up with FI motors particularly with altitude. Because you are under 1000 feet, it will make the 335i appear slightly down on power compared to what it actually makes (but not by much). B) I think your results are approx correct. The 335 is around 400#s less than the 540, and they run almost exactly 4/10ths faster in the 1/4 at low altitudes. C) This further verifies the M62(TU) is underrated and the S62 overrated.
    Ok thanks because I didn't know that. 335i do have better 1/4 mile times because their launch is better. When you run them on the freeway over 90mph they struggle as their peak power doesnt matter any more because it declines after 5.5k rpm. Am I allowed to post videos of racing on this forum?

    Quote Originally Posted by Cyrix2k View Post
    Raw as in uncorrected? What are the uncorrected numbers for both? That will be a good comparison since they were dynoed back-to-back.

    The dyno that I posed are uncorrected for both.

    Quote Originally Posted by Calicoastin View Post
    Graph state almost exactly 275 for the 335. Impressive results OP.
    Thank you.
    Last edited by rad540i; 02-25-2013 at 04:14 PM. Reason: Automerged Doublepost

  21. #21
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    you can't post a video directly to the forum.

    post to youtube or other hosting site and post here... if youtube doesn't delete it you should be good to go to post here I think... I think.

    Just be sure to say you are in mexico, lol.

    2001 330Cic/A in the same color combo is "Her" ride.

  22. #22
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    Quote Originally Posted by Justin517 View Post
    you can't post a video directly to the forum.

    post to youtube or other hosting site and post here... if youtube doesn't delete it you should be good to go to post here I think... I think.

    Just be sure to say you are in mexico, lol.

    Haha or computer generated.

  23. #23
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    In for the Video!!!!

  24. #24
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    Quote Originally Posted by rad540i View Post


    The dyno that I posed are uncorrected for both.


    So you are saying your car did identical numbers STD and raw at 55F? Something is.... odd.


    /.randy

  25. #25
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    Quote Originally Posted by rf900rkw View Post
    So you are saying your car did identical numbers STD and raw at 55F? Something is.... odd.
    Please define raw.

    Quote Originally Posted by MartinV View Post
    In for the Video!!!!
    Hopefully I'll get few runs on Friday. Just so busy at school.

    Its gona be 540i vs e46 m3 vs g35 vs 335i vs camaro ss
    Last edited by rad540i; 02-25-2013 at 08:21 PM. Reason: Automerged Doublepost

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