HKS DLI test....

OK, so I wasn't sure if my hks DLI was working. with the car running, DLI unplugged I was getting 14.9v. With the HKS DLI plugged in I was getting 14.1-14.2. weird. Checked all connections and they were good. Took off the ground and cleaned off the chassis ground even better. New plugs, gapped to what it came out of the package (I know...lost my plug gapper) new 8.5 msd wires.

So...took it for a ride with the DLI unplugged and turned the boost down to 21psi and was getting blowout. turned it down more, same thing. Pulled over and plugged the DLI back in and made a couple runs up to 22.7 and ran strong and pulled hard with no blowout/stutter. Too many cars were coming around so I had to stop there. I guess my question is answered that the DLI works. But, why is the voltage lower when at idle?

Discussion would be appreciated.

Voltage lower due to the dli using it to supplement spark. Not sure what is inside the dli, but I would guess it is capacitors charging to release as needed.

I feel like what bill said is fairly common sense? I do not understand why you are confused about it...?

guess I didn't expect the DLI to draw that much voltage. How can I test with the car idling to see more spark? I mean, after watching a video with and without a spark amplifier, I was wondering if I can replicate that by running a plug and wire and watching it with the car running then reving?? I gues I am not sure exactly how the DLI works per say...

Not sure what you are looking to do/test? You already confirmed it works with your blowout test right?

I don't think you'd be able to test it without having an oscilloscope. I thought I once read all it really does is extend the dwell time of the primary coil at high rpms.

Are your yellow wires tied to the positive side or the negative side of the coil?

http://i62.photobucket.com/albums/h1...ps56e2626f.jpg


ground is bolted to the chassis.

the red power wire is on the 1st coil closet to the front of the car. next to the yellow wire

I see the problem already. You need a red wire at each coil lead. You're blowing out because you're only amping the spark signal at one coil. Fix it and you will have high boost..

All the coil+ reds should be already chained together.

they are. i just am tapping into one, but they are wired together concurrently

Maybe the CDI is working and the transistor is not? Are you using resistor spark plugs? You have to make a few tweaks if you're using non resistor sparkplugs. The DLI is not compatible with them without noise filters due to emi.

What are the effects of using them with non-resistor?

NGK R5671A-8 Non Projected Tip set of 6 (4554) - Ninja Performance - Affordable Performance Auto that's what im using

HKS USA Twin Power DLI (more)

See note:

Quote:

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HKS Twin Power Units are not compatible with Non-Resistor*Spark Plugs

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Use the HKS DLI Hotwire relay method and use a notch filter if you're going to run those plugs. that's how I have to wire mine to use VC53's.

An excellent plug for ethanol and an unmodified ignition system with your power level is NGK BR8EIX. That's a non projected resistor sparkplug.

Hate to see you take two steps forward and two steps back bro. It's like that sometimes though.

AEM says the same about non-resistor not compatible the EMS. I had questioned Ray and he said no issues with either DLI or EMS with non-resistor.

Was going to email them about it, but can't find an addy...

Quote:

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Originally Posted by J. Fast

HKS USA Twin Power DLI (more)

See note:

Use the HKS DLI Hotwire relay method and use a notch filter if you're going to run those plugs. that's how I have to wire mine to use VC53's.

An excellent plug for ethanol and an unmodified ignition system with your power level is NGK BR8EIX. That's a non projected resistor sparkplug.

Hate to see you take two steps forward and two steps back bro. It's like that sometimes though.

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I love learning, and this may be a opportunity to learn.

As noted by another, Ray has always used DLIs with non resistor plugs with no issues. I don't think he ever mentioned doing anything special like the notch filter you mention. I too have used a DLI for a very long time. My current setup, using a DLI I started using probably 4 years ago, all it has ever seen is non resistor NGK coppers, and now the champion C53VC surface discharge plugs which are non resistor.

I always run around 35-36psi. Street and drag strip. Never a hiccup.

So what is the actual issue? I know HKS has always stated no for use with non resisotor plugs. But is this just HKS covering their butts since non resistor plugs by nature will cause EMI and maybe ruin your AM radio reception. Does the DLI increase this effect so the don't want to risk it. Of course strong enough can disrupt an ECU, but again, never seen any issues or heard of any.

Please share with the class, I am all about learning.

-Chris

Put me down for DLI + Non-resistor plugs without issue.

Quote:

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Originally Posted by J. Fast

HKS USA Twin Power DLI (more)

See note:

Use the HKS DLI Hotwire relay method and use a notch filter if you're going to run those plugs. that's how I have to wire mine to use VC53's.

An excellent plug for ethanol and an unmodified ignition system with your power level is NGK BR8EIX. That's a non projected resistor sparkplug.

Hate to see you take two steps forward and two steps back bro. It's like that sometimes though.

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Where is that relay method? and what does that and the notch filter do?

Quote:

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Originally Posted by Ninja Performance

I love learning, and this may be a opportunity to learn.

As noted by another, Ray has always used DLIs with non resistor plugs with no issues. I don't think he ever mentioned doing anything special like the notch filter you mention. I too have used a DLI for a very long time. My current setup, using a DLI I started using probably 4 years ago, all it has ever seen is non resistor NGK coppers, and now the champion C53VC surface discharge plugs which are non resistor.

I always run around 35-36psi. Street and drag strip. Never a hiccup.

So what is the actual issue? I know HKS has always stated no for use with non resisotor plugs. But is this just HKS covering their butts since non resistor plugs by nature will cause EMI and maybe ruin your AM radio reception. Does the DLI increase this effect so the don't want to risk it. Of course strong enough can disrupt an ECU, but again, never seen any issues or heard of any.

Please share with the class, I am all about learning.

-Chris

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chris, I just bought the vc53's from you and get horrible stutter and blow out even at 14psi-23psi

With the current plugs in I cant go over 23psi again? cant figure out why

take some bailing wire to your wastegates and wire them shut. Back out of it if your boost climbs over 27psi.

Quote:

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Originally Posted by Ninja Performance

I love learning, and this may be a opportunity to learn.

As noted by another, Ray has always used DLIs with non resistor plugs with no issues. I don't think he ever mentioned doing anything special like the notch filter you mention. I too have used a DLI for a very long time. My current setup, using a DLI I started using probably 4 years ago, all it has ever seen is non resistor NGK coppers, and now the champion C53VC surface discharge plugs which are non resistor.

I always run around 35-36psi. Street and drag strip. Never a hiccup.

So what is the actual issue? I know HKS has always stated no for use with non resisotor plugs. But is this just HKS covering their butts since non resistor plugs by nature will cause EMI and maybe ruin your AM radio reception. Does the DLI increase this effect so the don't want to risk it. Of course strong enough can disrupt an ECU, but again, never seen any issues or heard of any.

Please share with the class, I am all about learning.

-Chris

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CDI ignitions like those used in motorcycles and other small powersport products, as well as MSD boxes and many other aftermarket ignition systems, have always spec'd non resistor plugs. Inductive coil systems have almost always spec'd resistor plugs. The difference has to do with spark voltage and duration. CDI systems typically have a very short duration high voltage spark that doesn't play well with resistance. Inductive systems have a lower voltage high duration spark, that uses the plug resistance to bump the spark voltage a bit..

The big mystery here, has to do with the internal workings of the DLI. Being as it is a CDI system, with a transistor controlled spark duration, augmenting a stock inductive coil system...
How it works, and what plugs may give optimum spark voltage and duration is not common knowledge, and not really expanded on by the manufacturer.

The only advice I can offer, is if what you're doing works, don't fix what isn't broken....

I've seen a fair few motorcycle ecus destroyed by running none resistor plugs, not a dig just an observation..