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09-04-2008
I have a 07 GP GT 3.8 Series III Supercharged.
I picked up some Autolite 104 plugs and a 180* T-stat today. I do have a Overkill PCM on its way and will be changing to a 3.5 pully.
1. Is this the right plug for my car?
2. What Gap is recomended.
thanks
09-04-2008
Yup you are right on. Those are the plugs i plan on getting for my car also [when i get home from school].
A .055 gap is recommended or so i hear.
Read more about it here. Their is some great information on this thread.
09-04-2008
Yep .055 will be good, and just and fyi, I hope you have some exhaust mods on your mod list cause dropping to a 3.5" will be a bit much without some. Remember you do have a Gen V.
09-04-2008
I appreciate the information from all. what exhaust mod are we talking about. What exhaust mod keeps me inline with my Factory warranty.Originally Posted by Smokin2000gtp
09-04-2008
Stuff like a Plog, down pipe, etc.
09-04-2008
i would get a power log. the front manifold is garbage. when your car is cool, go out and reach under the front maifold and feel it. its not round, it actually sucks in and if you pull it off you can see how restrictive it is. its easy to swap out with the stock mani so you could swap it back for the stock one if you have to take it back to a dealer
09-04-2008
Stock mani:
Plog:
09-04-2008
YES!! there you go
09-04-2008
thanks all for the recomendations. Is ZZP the best place to get a Plog? Also can't I leave the Plog on when I go to the dealer? Why or why not?
09-04-2008
They're the only place to get the Plog. They designed it.
As for the dealer, it won't void all of your warranty, if they even care. It's not like your windows stop working and they blame the Plog. I can see them possibly raising a stink about anything exhaust related. But that's up to the dealer.
If you're wanting to drop a pulley, they might notice that too and it'd cause more warranty issues that the Plog would.
09-04-2008
So what option is the best to go with when it comes to stainless or ceramic?
09-04-2008
Both. But I can tell you from experience that the stainless holds heat as well as most ceramic coatings. Stainless is stronger, too. If you want to pony up the $80 for ceramic, go for it.
09-04-2008
I appreciate the help. And I suppose if I bring my car in to the dealer after I get my Overkill PCM I should switch back to my factory one. I keep it when i placed my order for the overkill pcm
09-04-2008
That would be wise to prevent them from flashing it.
09-05-2008
many of you have been very helpful, but I wanted to drill down a little more a a few things.
What trouble am I looking to get into if I add a Plog, autolight 104, a 3.5 pully with GB belt, and a overkill pcm. I have my factory PCM so I can switch it before I go into the dealer, but I don't fee like pulling off the plog or the pully when i go in to the dealer. You mention that the plog might cause warranty issues with the exhaust. Why would a pully drop cause any issues?
I have of course the 100,00 power train warranty and I have a addtional extended warranty for 48 months/48,000 what ever comes first.
I bought my car a few months back with 28,000 miles on it so I have coverage to 2011 or 76,000 which ever comes first.
09-05-2008
You would have to talk to the dealer to be sure about what would void your warranty. I have no idea what would or wouldn't void your warranty.
What that said i would imagine that exhaust work [or an intake] wouldn't void warranty because it can really only help the car perform better and extend the life of the engine. A pulley on the other hand is adding more boost which could be potentially harmful to the engine [without the right supporting mods].
09-05-2008
Because the smaller pulley puts more stress on every engine component. Anything fails, they can blame that pulley.
If you want to mod, you should forget about your warranty. Better to save the warranty money in a bank account for when something goes wrong. As you get deeper into modding, though, you usually replace the parts that are going to go bad anyway.
09-06-2008
So I have not installed the Al 104's yet because I am alittle confused. I have read many post on this forum and as well as other information I collected.
From what I have came to is the Iridium plugs are rated high performance wise evne when compared to the Al 104. So would the IX be a better choice. If so what
Iridium IX Spark Plugs are the most technologically advanced high performance plugs available. Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments. Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs. Which IX would I run. 2007 GP 3.8 III Supercharged. Over Kill PCM, CAI, 3.5" coming soon and possible ZZP PL
Iridium plugs burn clean and a colder range of plug can be used without the normally associated risk of plug fouling. TR55ix's are recommended for non boosted applications. TR6ix plugs recommended for low boost applications. The Iridium line of plugs are designed for maximum performance with maximum life. They will last 50k miles plus and perform better than the standard NGK plugs.
09-07-2008
Our engines prefer copper plugs more. I'd stick with the AL 104's.
09-07-2008
But dont you have to change out the AL 104's every 10k miles, or am I wrong?
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