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Nick Diggles

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  1. Hi! I have an LEM V3 with a V5 upgrade, performing well for many years, and have recently re-tuned for E85.  Engine is an old Datsun L20b, turbo with a lumpyish cam, fabricated plenum and 65mm throttle body. I have been using MAP Clamp of 52Kpa for years to help stabilise the idle. Row Steps are TPS+MAP. I've always set Accel Mode to TPS without problem, but now on E85, low rpm mild throttle blips (especially when cold) show lean and die - the rate of TPS change is not enough to trigger Accel enrichment even though the MAP changes significantly. Tried richening the next Row which was not satisfactory. Increasing Accel Low helped trigger an enrichment event with less throttle movement but it supplied too much fuel. I then changed Accel Mode to MAP and voila, the light blips now trigger Accel enrichment and problem solved, along with improved throttle transient 'feel'.  The problem now is that rolling into and out of throttle on cruise shows much richer than previously, and even very slow tip-in from the fuel cut is often harsh as the mixture is richer and 'ready to burn' rather than lean and 'fluffy' that allows a smoother transition to the cruise mixture.  This is a steady state condition that is not caused by an acceleration enrichment event.  Slow tip-in from the fuel cut shows sudden rich (often with jerking) , then normal cruise lean, then normal richening as the throttle is opened further.  Even without entering the fuel cut it will now show rich on cruise at the lightest throttle settings. I don't understand how simply changing the Accel trigger caused this!  All I can think of is that now for some reason the MAP Clamp is limiting how lean the fuel delivery is at cruise, or under 52Kpa. Any help or ideas are appreciated!  Thankyou, Nick.
  2. yea errors at 1100 i set lockout at 1200 fine now thanks mate
  3. offset is correct, will this prob cause the check engine light to come on and will it do any harm? cheers Nick
  4. the rh cam sensor (sti ej255 avcs inlet cams) keeps getting errors when i go into runtime values but with a couple revs on the status goes back to ok any ideas? DI2 is the input for it where as i use trig 2 for the lh cam sensor because it also gives sync pulse, im unsure on this any help would be appreciated cheers Nick
  5. hey mate yeah i just didnt press enter idles smooth now. another prob i have is that the rh cam sensor (sti ej255 avcs inlet cams) keeps getting errors when i go into runtime values but with a couple revs on the status goes back to ok any ideas? DI2 is the input for it where as i use trig 2 for the lh cam sensor because it also gives sync pulse, im unsure on this any help would be appreciated cheers Nick
  6. hey mate is there anyway i can change the isc solenoid frequency its at 10hz now but pclink recommends 200hz but it wont let me change it my engine is sti ej255 and wont idle it used to have ethrottle but ive changed it to mechanical cheers Nick
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