All of the stories I read ended with guys getting fed up with failing coils and while they recieved replacements nder warranty they were sick of replacing coils. I was disappointed to say the least. But after researching this further I realized there was no benefit to the higher voltage. Get the spring replacement upgrade and you will be truly impressed at how smooth the truck is.

Would I benefit with the spring replacement being i am n/a? Also would I need to regap plugs and what will that do for me

Sound good,

Thanks Blown!

You could certainly benefit from the upgrade. Much smoother performance. As for the gap, you don't have to change it. It is an option though.

Cool man thanks. Wander if I can pull the boot off my 2001 gran and put them on my 2007?

What would be the benefit of a N/A engine with a larger gap?
I would have thought for us, the smaller hotter spark would be more favorable.

Opening up the gap exposes the spark to more fuel and thus you recieve a better more effecient burn. The more effecient and complete the fuel burn the more power. We aren't talking big numbers. 5-7hp on an NA motor. The trick is not opening up the gap to much and thus causing a miss fire. NGK has a page which explains this in terms we can all understand. Here is a paragraph from that page about gapping.


3. Gapping
Since the gap size has a direct affect on the spark plug's tip temperature
and on the voltage necessary to ionize (light) the air/fuel mixture, careful attention is required. While it is a popular misconception that plugs are pre-gapped from the factory, the fact remains that the gap must be adjusted for the vehicle that the spark plug is intended for. Those with modified engines must remember that a modified engine with higher compression or forced induction will typically require a smaller gap settings (to ensure ignitability
in these denser air/fuel mixtures). As a rule, the more power you are making, the smaller the gap you will need.
A spark plug's voltage requirement is directly proportionate to the gap size. The larger the gap, the more voltage is needed to bridge the gap. Most experienced tuners know that opening gaps up to present a larger spark to the air/fuel mixture maximizes burn efficiency. It is for this reason that most racers add high power ignition systems. The added power allows them to open the gap yet still provide a strong spark.
With this mind, many think the larger the gap the better. In fact, some aftermarket ignition systems boast that their systems can tolerate gaps that are extreme. Be wary of such claims. In most cases, the largest gap you can run may still be smaller than you think.

Hey blown, I was looking into the accel coils because their cheap for all 8... Do you think if I do the granatelli boot upgrade on these accel coils I can just change out to my working OEM coils once the accel's start failing? I'm looking to utilize these 0 ohm boots while keeping a cache of coils on the bench, for future repairs. Will the boots handle multiple COP head swaps?

Yes they can be inserted and removed from the coils without any issue. There's really no way you can hurt them. It's a stainless steel rod wrapped in a stainless steel braid.

Thanks for the response. You are probably one of the greatest contributors to this forum. Damn, I gotta drive your truck one day. Even if it's just for a year. :) I did my spark plugs today and saw those bloody springs. I even had to disconnect a boot from the coil just to get the bloody thing off. Those springs seem way too fragile.

Even with a badass warranty, it isn't worth the downtime by having a misfiring engine.