Fixed my GTP! Time for mods.

[Konvinced89]

For those not familiar with my angry rants, my car had an intermittent rough idle/stalling issue for years, and I replaced nearly every sensor in the engine with no results. MAF, MAP, TPS, CPS, IAC, plus the fuel pump/filter, and a bunch of other things. Short version: I had it down to the PCM or wiring, and I got an Overkill PCM. Problem solved!

Now, I want to get back to the fun part of owning a GTP. My other mods are a K&N intake, 180* tstat, modular pulley system(3.8 for now), 104 plugs, ubend delete, resonator delete, and Magnaflow mufflers. I've kept up on the maintenance, and my goal is an additional 20-30 HP, and a couple tenths off my 1/4 mi. I'm pretty sure the next step is headers, Will said I'd be good to pulley down after that. I just want to make sure I'm not forgetting anything.
Also, I have a lot of drone with my mufflers; can anyone recommend a good way to reduce drone without it sounding totally mellow? I just want to quiet it down some, especially if I'm going to put headers on. Thanks in advance for any helpful advice.

[theaceofspades]

Well the Rez delete caused the drone. And yes get headers

[theaceofspades]

To fix it add the biggest glass pack you can to were the Rez used to be

[Konvinced89]

And the drone goes away? What brand would you recommend?

[theaceofspades]

Cherry bomb thrush whatever you want. And yes he majority of the drone will go away that's what the Rez does

[ADrugDealer]

Get headers, drop a pulley enjoy, intercool/cam, drop more, enjoy, turbo, enjoy.

[Konvinced89]

I'm at 4600ft above sea lvl, and my best 1/4mi run was a 15.2, which was before the overkill tune on a 3.4 pulley. Now it doesn't like the 3.4, and I haven't had a chance to run it on the 3.8. I'm hoping headers + 3.4 pulley will get me in the high 14s. Reasonable?

[BillBoost37]

Plugs are too cold for 3.8 and 180 is unneeded too.. put that moola into a real mod.

[Slick2500]

If the Overkill tune is set up for the 180* leave it in there though. And yes 104s are way too cold, you should be running Autolite copper or irridium 606s iirc or some ac delco 41-110 iirc.

[Konvinced89]

Plugs are too cold for 3.8 and 180 is unneeded too.. put that moola into a real mod.

I might be wrong...I'll have to check the box, I might've put iridium 605's in last time. I went through three sets of plugs trying to fix my rough idle, when all the while it was that darned PCM. I had copper 104's last time because I was planning to get headers shortly and run the 3.4 pulley, but I believe they are 605's now.

[Slick2500]

Oh yeah sorry I do believe its 605s not 606s.

[Konvinced89]

So after headers and 3.4 are in, go back to 104s?

[Slick2500]

Yeah.

Sent from A Galaxy Far Far Away........

[tomtom123]

Autolite Copper 606's are the stock heat range so thats probably what you should run intil your headers are in and 3.4 is on =]

Sent from my SM-N900P using Tapatalk