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Spark Issues And Haltech

Simon-S14

By Simon-S14,
in Engines & Forced Induction

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Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

i have been running wasted spark on a set of splitfires for about 5 years now. The coils will have NO issues in wasted.

turn logging on, and log it when it misses, you might be getting some bogus rpm signals, this is because the 360 optical sensor is really hard for the ecu to cope with especially in a modified engine, i found that cars with modded heads, springs and cams have more issues with this then stock head setups.

check the rpm signal, see if its stable, hold the rpm at one speed and then see if it goes up and goes down in the log, make a log when the car misses, is the rpm jumping over the rev limiter? or is it moving about strangly?

You may need to contact autronic, buy a trigger disk for nissan optical sensors and install it, I have done this to 3 cars in the last 2 months to fix the same issues, the issue is not haltech specific its the fault of the 360 slot hall setup.

the trigger disc should cost about $100 or so, i had to put one in my RB30DET after i changed the cams, before the cams i had no issues...

Simon-S14 Grand Master

Simon-S14

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  • Author
Posted

yeah did all the logging, not a single problem spotted, the miss counter shows a nice stable rpm.

anyway the problem was found in the end. would you believe it was something as simple as sparkplugs. I had 6 brand new NGK plugs in there and 3 of them proved to be faulty in such a way they wouldnt spark correctly, irrespective of what coils used.

rob82 Mentor

rob82

Posted
Posted

not really the word i'd use for it... more like waste of f**king time... so much dyno time wasted chasing issues... guess it comes down to never assume that just because a spark plug is new that it will spark correctly

Can't say that I've ever come across an issue with spark plugs being bad out of the box. The majority of case I've seen is usually due to improper installation - not saying that's the issue here I've just never seen it myself and when you've changed thousands of plugs on high performance engines I would think that's a pretty good sample.

Simon-S14 Grand Master

Simon-S14

Posted
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i havent come across it either. im a mechanic and have changed my fair share of plugs. these were brand new and out of the box failed to work. im not sure how but i chucked some 2nd handies in that had been sitting in a pile of crap. blew em off with an air gun and boom, car runs on 6 all the way thro the rpm range.

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