Can you see anything wrong on this dyno?

1. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

   #1 5th April 2009, 10:53

   As per title, had my car on a dyno the other week, but a few people have mentioned that they think my fueling looks screwed, can anyone advise me if this is the case and what the cause may be, also someone mentioned the bhp line is a bit weird up to 3k(?) revs
   
2. user_26373 Established Member Joined: Aug 2008 Lancaster Posts: 1532 JP4 AX

   #2 5th April 2009, 11:09

   A large van or wagon thats been dyno'd? Must be a monster dyno machine...
3. AlexBp West Midlands Joined: Dec 2007 West mids Posts: 23149 Supra,civic GL

   #3 5th April 2009, 11:11

   Quote:

   Originally Posted by Saamuell A large van or wagon thats been dyno'd? Must be a monster dyno machine...

   what are you on about?
4. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

   #4 5th April 2009, 11:11

   Quote:

   Originally Posted by Saamuell A large van or wagon thats been dyno'd? Must be a monster dyno machine...

   What you on about?
5. user_26373 Established Member Joined: Aug 2008 Lancaster Posts: 1532 JP4 AX

   #5 5th April 2009, 11:13

   Quote:

   Originally Posted by Bickerton What you on about?

   Didn't read first line
   oops
6. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

   #6 5th April 2009, 11:14

   Quote:

   Originally Posted by Saamuell Didn't read first line oops

   Okay, but that just confused me more?
7. gouldy87 Saxperience Forum Bum Joined: Jun 2008 Posts: 3932

   #7 5th April 2009, 11:23

   im finding it abit hard to understand that graph tbh ive got a crazy graph for fueling off mine when it ran the other week. my fuling is horrendous but you might be able to compare. and if it looks qnything like mine then you have a problem! shall i put mine up?
8. Ryanp Super Moderator Joined: Feb 2004 Tonbridge United Kingdom (England) Posts: 38236 Vtr, 172, throttle bodied track slut

   #8 5th April 2009, 11:24

   All is smooth thill 4k then it looks like Vtec kicked in yo!!!
   
   The lower graph AFR is where the fueling will be seen as all over the place.
   
   Did the RR not advise you on why the AFR is like this?
9. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

   #9 5th April 2009, 11:25

   If you like, i have no clue what im looking at tho , hence this thread
10. gouldy87 Saxperience Forum Bum Joined: Jun 2008 Posts: 3932

    #10 5th April 2009, 11:27

    well i cant understand your graph mate tbh i dont no which bit is which on it but ill put mine up (quite bad quality pic) but it colur coded so it easy to read.
11. gouldy87 Saxperience Forum Bum Joined: Jun 2008 Posts: 3932

    #11 5th April 2009, 11:28

    
    
    
12. Ryanp Super Moderator Joined: Feb 2004 Tonbridge United Kingdom (England) Posts: 38236 Vtr, 172, throttle bodied track slut

    #12 5th April 2009, 11:30

    Quote:

    Originally Posted by gouldy87 well i cant understand your graph mate tbh i dont no which bit is which on it but ill put mine up (quite bad quality pic) but it colur coded so it easy to read.

    Its got it written on it.
13. gouldy87 Saxperience Forum Bum Joined: Jun 2008 Posts: 3932

    #13 5th April 2009, 11:30

    the very very squiggly line that's pink is my fuelling. that is supposed to be a straight, smooth line. that means your fueling is fucked. i hope this is of some help to you.
14. user_26373 Established Member Joined: Aug 2008 Lancaster Posts: 1532 JP4 AX

    #14 5th April 2009, 11:59

    Quote:

    Originally Posted by Bickerton Okay, but that just confused me more?

    Sorry, just forget i said anything lol
15. Ryanp Super Moderator Joined: Feb 2004 Tonbridge United Kingdom (England) Posts: 38236 Vtr, 172, throttle bodied track slut

    #15 5th April 2009, 12:01

    Quote:

    Originally Posted by Saamuell Sorry, just forget i said anything lol

    I think thats best tbh myself
16. manc Established Member Joined: Dec 2004 Derby Posts: 1945 Pug 207

    #16 5th April 2009, 14:08

    Bickerton, Fueling seems OK, always below 14:1 and get's richer all the way to 12:1, doesnt want to stay at 12:1 for too long thou.
    
    Like Ryan says what is going on at 4k, its show's it dipping to 4k then all of a sudden jumps like a turbo or vtec has kicked in...
    
    Why was the run only done to 5k??? should it not be near 6/7k?
    
    ManC
17. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #17 5th April 2009, 16:40

    That's a completely uselss dyno result for a 16v lump. Try another company I'd say!
18. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

    #18 5th April 2009, 16:40

    Quote:

    Originally Posted by manc Bickerton, Fueling seems OK, always below 14:1 and get's richer all the way to 12:1, doesnt want to stay at 12:1 for too long thou. Like Ryan says what is going on at 4k, its show's it dipping to 4k then all of a sudden jumps like a turbo or vtec has kicked in... Why was the run only done to 5k??? should it not be near 6/7k? ManC

    My car always goes apeshit at 4k, assumed they all did...
19. gouldy87 Saxperience Forum Bum Joined: Jun 2008 Posts: 3932

    #19 5th April 2009, 16:51

    i wish mine went ape shit, its crap. all 129 bhp of it. it doesnt go anywhere
20. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

    #20 5th April 2009, 16:53

    Quote:

    Originally Posted by gouldy87 i wish mine went ape shit, its crap. all 129 bhp of it. it doesnt go anywhere

    Mine was 110 at the wheels and 136 at the fly, standard other than a pugsport
21. user_29491 Saxperience Forum Bum Joined: Dec 2008 Lancs Posts: 4124 JP4S'd R.

    #21 5th April 2009, 16:54

    Mine seems to pull its best at 4k too.
22. Ryanp Super Moderator Joined: Feb 2004 Tonbridge United Kingdom (England) Posts: 38236 Vtr, 172, throttle bodied track slut

    #22 5th April 2009, 17:05

    mine sends me all over the road at 4k if its bumpy
23. user_29491 Saxperience Forum Bum Joined: Dec 2008 Lancs Posts: 4124 JP4S'd R.

    #23 5th April 2009, 17:07

    you've got serious power tho
24. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

    #24 30th July 2009, 14:09

    Sorry to bump my old thread, but i had my cars MOT last week which it passed, but almost failed on the emissions at idle, the guy had to hold it at like 2k + to pass the test, could this be linked to fuelling etc?
25. Thecherry0121 Established Member Joined: Dec 2008 Great Barr Posts: 1489 Cherry red 106 GTi

    #25 30th July 2009, 14:23

    with oe exhaust ?
26. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

    #26 30th July 2009, 14:32

    Quote:

    Originally Posted by Thecherry0121 with oe exhaust ?

    No, MOT was with my standard cat system, that dyno was with pugsport tho
27. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #27 30th July 2009, 14:53

    Could be a few things bud. If the CAT isn't working so well, that could be a very simple reason.
28. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

    #28 30th July 2009, 14:58

    Quote:

    Originally Posted by Toad Could be a few things bud. If the CAT isn't working so well, that could be a very simple reason.

    Would any of the few things cause an iffy idle soemtimes when warm too?
29. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #29 30th July 2009, 15:10

    Define iffy idle mate...
30. edwcorst Frequent Poster Joined: Jun 2008 Posts: 852

    #30 30th July 2009, 15:10

    hi bick... i think my idle/power loss and sometimes cutting out is my lambda sensor had it on a diagnostics .. not sure if this would be relevant to you though just thought would say..
31. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

    #31 30th July 2009, 15:38

    Quote:

    Originally Posted by Toad Define iffy idle mate...

    http://www.saxperience.com/forum/sho...highlight=idle
32. Mysticp Scotland Joined: Jul 2005 Edinburgh Posts: 9556 Saxo 1.6i 16v VTS, 2 Classic Minis

    #32 30th July 2009, 15:47

    Looks a total mess to me mate.
    
    Only revved upto 4800rpm? Dip & then sheer incline at 4k. AFR drops dow to 9 at 2300rpm. I dont even know what to say the whole thing just looks fucked to me? If someone had shown me that graph i'd think it was for a diesel van with some mega fuelin issues!
33. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

    #33 30th July 2009, 15:50

    Quote:

    Originally Posted by Mystic Looks a total mess to me mate. Only revved upto 4800rpm? Dip & then sheer incline at 4k. AFR drops dow to 9 at 2300rpm. I dont even know what to say the whole thing just looks fucked to me? If someone had shown me that graph i'd think it was for a diesel van with some mega fuelin issues!

    Everyone else's printouts for the day
    
    http://www.saxperience.com/forum/sho...5&postcount=30
34. Mysticp Scotland Joined: Jul 2005 Edinburgh Posts: 9556 Saxo 1.6i 16v VTS, 2 Classic Minis

    #34 30th July 2009, 15:53

    Mmm, something must be wrong with that dyno / the guy whos doing the button pushing, AFRs are all over the place for most folks, at least a fwe of them are revving higher, no idea what those sheer inclines are all about though, it cant be healthy at all. thats a gearbox destroying increase in horsepower+torque lol, or mad VTEC y0!
35. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

    #35 30th July 2009, 16:00

    Quote:

    Originally Posted by Mystic Mmm, something must be wrong with that dyno / the guy whos doing the button pushing, AFRs are all over the place for most folks, at least a fwe of them are revving higher, no idea what those sheer inclines are all about though, it cant be healthy at all. thats a gearbox destroying increase in horsepower+torque lol, or mad VTEC y0!

    Cant remember the exact details but he mentioned that would stop the tests when got the highest bhp amount so could get thru all the cars, mebbe somehting to do with that explains the sharp drops in most, still see my fuel line is a bit random vs other peeps tho
36. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #36 30th July 2009, 16:04

    Doesn't sound like the ICV to me. It's probably working fine, but then getting dodgy instructions from the ECU. I would consider the TPS, or a messed up ECU. I assume you have no error codes at the moment?
    
    I had the EXACT same issue as you, but it soon developed into an odd case of when the revs would take off by themselves. Nightmare in traffic, like you are giving it beans! Still never found out exactly what was wrong, but it seemed to sort itself out after I took off the TPS and gave it good clean. Previously to this, I'd changed the MAP sensor and ICV, both made no difference.
    
    It could have just been the ECU throwing a wobble, but I'll never really know...
37. user_26394 Saxperience Addict Joined: Aug 2008 Bedworth Posts: 10221 106 gti

    #37 30th July 2009, 16:10

    Quote:

    Originally Posted by Toad Doesn't sound like the ICV to me. It's probably working fine, but then getting dodgy instructions from the ECU. I would consider the TPS, or a messed up ECU. I assume you have no error codes at the moment? I had the EXACT same issue as you, but it soon developed into an odd case of when the revs would take off by themselves. Nightmare in traffic, like you are giving it beans! Still never found out exactly what was wrong, but it seemed to sort itself out after I took off the TPS and gave it good clean. Previously to this, I'd changed the MAP sensor and ICV, both made no difference. It could have just been the ECU throwing a wobble, but I'll never really know...

    Replaced the ICV, which is the tps though was the icv under another name?
    Had a proper diagnostic at a peugeot dealership before and came back with nothing
    
    EDIT- just found tps on servicebox, holy shit it's expensive!
38. DaN90 Infrequent Poster Joined: Feb 2009 Posts: 197 16v s1 rallye :)

    #38 31st July 2009, 02:34

    roughly 16 bhp off pugsport exhaust :-0
39. Mieran Saxperience Post Whore Joined: Jul 2007 Newcastle Posts: 6719

    #39 31st July 2009, 02:39

    Looks like this graph
    
    

    1 user thanked this post: Paulp
40. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #40 31st July 2009, 08:19

    Quote:

    Originally Posted by Bickerton Replaced the ICV, which is the tps though was the icv under another name? Had a proper diagnostic at a peugeot dealership before and came back with nothing EDIT- just found tps on servicebox, holy shit it's expensive!

    TPS is not the ICV.
41. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #41 31st July 2009, 08:20

    Nice graph Mieran...