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Spark Issues And Haltech

Simon-S14

By Simon-S14,
in Engines & Forced Induction

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Simon-S14 Grand Master

Simon-S14

Posted
Posted

Hey ail just wondering if anyone else has has spark related issues when running a haltech. Yesterday we tried tuning my car which has new plugs and brand new spitfires and it didn't matter how we gapped the plugs or set the dwell we had a major miss at anything over 12 psi and 4000 rpm

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https://www.sau.com.au/forums/topic/396398-spark-issues-and-haltech/
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KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

You have a neo engine? A lot of aftermarket ecus have problems at the upper end apparently caused by the R34 CAS. Is yours still stock in this area? There are a number of solutions - Ross make one I don't know if Unigroup has another - in NZ a few tuners have developed their own triggering systems for the R34.

rob82 Mentor

rob82

Posted
Posted

Try turning of all acceleration enrichment as well. Have you check that you have proper timing control throughout the entire rev range. Set the timing at 20deg check it all the way to 7000 on a static rev and make sure it's rock solid then do the same with 40degrees.

Ps isn't the r34 signal a 360deg signal and a 654321 narrowing signal? I'm not aware of any differences between r32 to r34 in terms of signals it's just the wiring at the cas is reversed.

  • 2 weeks later...
Simon-S14 Grand Master

Simon-S14

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cant believe no one has concrete info on this.. haltech dont want to acknowledge a fault.. thing is im wondering if spitfires just cant handle running in wasted spark.

got a new MSD set up now.. spark is huge at idle.. should be interesting to see how it goes now

rob82 Mentor

rob82

Posted
Posted (edited)

cant believe no one has concrete info on this.. haltech dont want to acknowledge a fault.. thing is im wondering if spitfires just cant handle running in wasted spark.

got a new MSD set up now.. spark is huge at idle.. should be interesting to see how it goes now

I can't recall running those coils in wasted spark configuration. But Holden seem to run a single coil v8 to 6200rpm no problem with a coil that takes simulate dwell =2.5 ms.

At 4000 rpm in wasted spark with 2.5ms dwell time your only at 16% duty as in on time of 2.5 off time off time 12.5ms - hardly working a coil IMO.

My bet is still the haltech.

Edited by rob82

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