yea everyones trying to point out your obvious mistakes, not trying to be a dick. you should get some ngk tr6 plugs in there and start running 93 ALL the time. and make sure the shop did everything right on that fuel pump too, it could of caused you to go lean.

 

Like I saw before, I do run 93 most of the time. I have also run the medium grade too when just normal driving (mixed with the 93). I've never had pinging anywhere near as bad as that test drive. But for whatever reason, it happened. I do know a good bit about my engine and mods. No, I didn't know about the plugs. The people at magna charger said they were fine to use. I think I even read on here somewhere that it was fine too. Either way I will change them to tr6'. Lesson learned. And I really appreciate all the help with the issues I'm having but if your going to comment about how I used low octane fuel, keep it to yourself. From everything that has happened, it looks like the main reason for my problems was because I didn't let the PCM learn the trims and settings long enough before I let that guy drive my truck. In fact after I got the truck repaired, I drove straight to the guy to drive it. Never even killed it once. It makes perfect sense what happened so i feel that is out of the way. So I'm not on here to get talked down on about what fuel I used, I'm on here to try and get my truck running right again. I'm just a shade tree mechanic that likes to work on my own ****. I like coming this sight because there are lots of good people on here willing to give good advice and help. Like I said before, I don't need a third degree in using the right octane fuel. I know to use 93 octane.

 

Later today, im going up to the shop to check my fuel pressure and ratio. Also I'm installing my boost gauge in the morning.

 

I looked into those ngk tr6 plugs at autozone. They only had 4 left and. They were not cheap. They wanted 12.99 a piece. Not even sure if they were the right ones for my truck. That's the only ones they had in stock. They had an autolite plug that crossed with that number and they were 1.79ea. I'll do more research and make sure I get the right ones.

 

their only like $2 bucks each

 

Autozone doesn't carry NGK plugs...they were either trying to sell you some substitute or they were going to special order them for you and charge you a shitload of money for them. I always get mine at Napa, and as said above, they are usually about $2 each.

 

Cool, I will check with NAPA, Thanks.

Anyway, I'm sitting here debating weather or not to spray this carbon cleaner stuff in my #7 cylinder. The guy at chevy said to take the plug out, spray it in until it runs out the hole, let it sit an hour then run thr truck. He never said to drain the crap out or just put the plug back in and start it. If I just put the plug in and start it, wouldnt that freeze up or water lock the piston? I'm thinking to leave the plug out and start the truck. Anyone ever use this stuff before?

 

I just found a little something from the magna charger website that states a few things that I have not disobeyed. So if you commented on the low octane use, read this. Now like I said before, I have used 93 most of the time and midgrade sometimes mixed with 93. I also have used the stock iridium plugs recommended. This isnt to say I won't change to TR6 plugs. I plan on doing that later when I go to NAPA. I called and they had them. So any way check the link out and read the lower parts of the webpage. Thats why, I ran it like I did. But I have learned a lot more thanks to you guys input. Thanks.

http://www.magnacharger.com/techsupport.htm

Stock spark plugs and stock plug gap is recommended.

Start with and use only 91 octane fuel or higher

After you finish your installation and road test your vehicle, please fill out the warranty card via mail or online, so we can add you to our files (this is important for your protection).

 

NGK Part number 4177 I believe... You don't need those expensive *** iridium plugs....

Its not just the choice of fuel I'm referring to man, way more to it.

 

You have a broken piston might as well pull the heads and get to work. These pistons are really easy to break a chunk out of and when they do it smashes the plug gap shut. The next time you boost it hard its going to start knocking again.