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  1. #51
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    Cheers guys il give this a go for now and go from there can't really do much as its off the road at the min tho

  2. #52
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    right i seem to have a missfire at 3100rpm with next to no load. The afr's are 13 and the spark adv is around 26deg btdc this all seems ok to me is that correct?
    I have removed the plugs and cleaned them, I did notice that cyl 2&3 were fouled up alot more than 1&4 so running rich on those cyls. Is it possible i have wired the injectors wrong as i thought if i had it wouldnt run at all? I have a spare set of injectors i can try and was thinking of using them anyway as i think they will have a better spray pattern than the ones im using at the mo.
    The leads, rotor and dizzy cap were new about 2years ago and all look ok, Anyone got any good ideas where to start?

  3. #53
    Non-member Matt@CodeRedMotorsports's Avatar
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    Re: spark and fuel tables

    How is your tdc sensor mounted?

  4. #54
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    It's one of scoffs I just cut up a piece of angle bracket and drilled a hole its aluminium 1" angle and about 1.5mm thick. I think I have a pix of it somewhere.

  5. #55
    Non-member Matt@CodeRedMotorsports's Avatar
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    Re: spark and fuel tables

    Quote Originally Posted by SCHWARTZ View Post
    It's one of scoffs I just cut up a piece of angle bracket and drilled a hole its aluminium 1" angle and about 1.5mm thick. I think I have a pix of it somewhere.
    Reason I ask, is just in case the bracket is vibrating and causing some probs for the sensor signal.

  6. #56
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    Here Are

  7. #57
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    It seems quite sturdy I may try doubling it up if it feels wobbly. The plug for the sensor does hit the water pipe. I'll get a pix when I get a bit of light.

  8. #58
    Non-member Matt@CodeRedMotorsports's Avatar
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    Re: spark and fuel tables

    Personally, I'd be inclined to beef that up. Possible steel angle as opposed to alloy.
    Attached Images Attached Images  

  9. #59
    Member Woznaldo's Avatar
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    Re: spark and fuel tables

    Agreed, that bracket will definitely be vibrating. Go for the steel equivalent and possibly add a gusset brace or two.

  10. #60
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    Cheers fella looks like il be getting my self some steel angle then

  11. #61
    Non-member Matt@CodeRedMotorsports's Avatar
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    Re: spark and fuel tables

    Worth a try and shouldn't cost the earth as you have a pattern to work from already.

  12. #62
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    Yeah hopefully this will sort it as everything seems to be ok. I will report back when I have tried this. Cheers mat

  13. #63
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    Right had a look at the bracket and it seems sturdy enough. I revved the engine up to 3100 whilst holding the bracket and tdc sensor to take away any vibrations and it still missed is that a good enough test or is there another way?

  14. #64
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    Re: spark and fuel tables

    Sorry if you already checked, but are you sure polarity is correct ?
    You have no funny launch control or cold-engine rev limiters set ?
    Over boost kpa isn't set at 100kpa or something daft ?
    You're using twin core screened ?
    Air gap between sensor and flywheel is less than 2mm ?
    It's 60-2 and not a siemens clio 172 pattern flywheel ?
    Software is definitely set for 2 missing teeth ?

    Just thinking out loud, I'm sure you've checked all of this already

  15. #65
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    All is fine except for the launch control which I was thinking about when I was writing the last post.
    Think I'm going to cut the switch off(has diodes wired in) and see if that is the prob as everything else seems fine
    I have my launch control set as;
    Retard ign above- 3500rpm
    Retard to- 15deg
    Enable launch when throttle over -40%
    Hard rev limit- 4800
    Variable launch- on
    I'm sure its something to do with the switch or these settings do these sound about right? Also there are flat shift options but I have no idea what to set them at and don't really want them coming into play so have just set the values silly high, is that ok?

  16. #66
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    Now changed rpm set points to 2800 and 3800 so both down 1000 rpm on both values to see if it makes any difference.

  17. #67
    International Area Rep Tutuur's Avatar
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    Re: spark and fuel tables

    Don't cut the switch, you can simply turb them off in tunerstudio or put in way too high values.

  18. #68
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    I will try setting the values way too high first but they shouldn't come into play at all if the switch hasn't been pressed, should they? So I'm thinking its the diodes connecting the +&- together are poss the wrong way round.

  19. #69
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    Dropped the tdc sensor down and all is solved It is extremely close to the teeth to the point where for the first couple of revelotions it was scraping on the teeth, even though it has only been dropped a tiny ammount not even 1/2mm.

  20. #70
    International Area Rep Tutuur's Avatar
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    Re: spark and fuel tables

    apparently that does the job

  21. #71
    Motech Tony Walker's Avatar
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    Re: spark and fuel tables

    sounds like a bad connection or dodgy sensor if theres a poor signal? The gap shouldnt need to nearly touch.

  22. #72
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    It's a brand new sensor and plug from scoff and I soldered all the connections using screened cable. I wonder if its just that the ms is poor at reading the signal

  23. #73
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    Right so the car revvs up well and didn't miss at high rpm, but I have to press the throttle very gently from idle for it not to miss. After a second or so it will smooth out and rev very quickly but there's an initial hesitation. I have tried the accelerator enrichment settings in both map and tps based settings and no change

  24. #74
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    Re: spark and fuel tables

    Thats map and transient related. Welcome to the challenging world of accurate mapping

    Don't worry about transient for now. Get your fuel table done - and by done I mean including load cells above idle and at every other rpm too, at least up to 100kpa. Then you can think about transient settings. There's no point in trying to dial in transient when the cells of the map you're jumping in to are not calibrated.

  25. #75
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    Cheers Chris. Looks like I have done all I can do for now then, until the cars ready to go back on the road

  26. #76
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    right i have finally got the car back on the road and i want to start mapping it. The car seems to drive well but it is rich, this is no problem to sort but its the spark map i'm worried about. I want to get the fueling map good so i can drive the car around for a bit then get it mapped properly on the rollers when i have the cash. Does this spark map look safe to sort the fueling on?

    [/URL]
    chris i know last time you said it looked safe but just want to confirm as i cant think if it has changed at all

  27. #77
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables



    right done a bit of mapping looking at other spark tables for the b18ft on the net and come up with this. Im getting some kind of miss fire when pulling hard in second gear it hits 5500rpm then i get loud pops and bangs so i let off, if i rev up slowly its ok. I have a knocktek and im wondering if i need to ignore knocks over 5000rpm or something like that due to engine noise?

  28. #78
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    would a little more advance help? i was woried about knock so had it a little more retarded that other maps.

  29. #79
    Non-member SCHWARTZ's Avatar
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    Re: spark and fuel tables

    also fueling was in the 12s when this happened

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