Spark Issues And Haltech

[Simon-S14]

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

[DVS JEZ]

If the timing is too retarded it will missfire also. Well if the spark is not strong.

[Simon-S14]

Tried everything on the tune, more timing and fuel and even pulled fuel and timing out and nothing made a difference.

[Simon-S14]

Anyone?

[RRob]

Need to look at the ECU file.

[rob82]

Sounds like a typical haltech issue. Which one is it?

[Simon-S14]

P1000

[rob82]

Got a scope?

[scotty nm35]

Why the scope?

I saw a similar problem on a Supra the other day, new plugs, coil packs were changed, made no difference. Is this a common issue?

[Simon-S14]

its beginning to sound like it is.

any more info?

[KiwiRS4T]

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.

[Simon-S14]

CAS signal is rock solid all the way thru the rpm range.already checked that

[rob82]

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.

[Simon-S14]

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]

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 April 12, 2012 by rob82

[Simon-S14]

yeah but why is it occuring with splitfires and not OEM coils.

[rob82]

yeah but why is it occuring with splitfires and not OEM coils.

Can you inclusively say that it's the spitfires? Have you tried swapping the spitfires for oem coils?

[Simon-S14]

i havent but trent (status) has.

[HYPED6]

Got a scope?

LOL, this man knows.

[ARTZ]

I'm running spitfires and wasted spark..no issues as yet..