Thread: on my way modding

where can i get the one of them sensors at? well it seems like headers will save me money in long run. Ill install my spark plugs while installing headers then put in my 3.4 pulley also

Do headers add to sound of the car?

yea exhaust im not going to change to much. Im really just trying to get more power right now hopefully with these headers and a tune and 3.4 pulley ill get at least 20 0r 30 hp

what should i gap my tr6 ngks at? .60

The headers make your exhaust slightly louder/raspier and they also increase interior noise from the motor. My advice, fit a cat to it and wrap the headers. Should be just like stock and move a lot better.

I read into the plugs and thr ngks tr6s were recommended with running the 3.4. I know the pulley and pcm go on last because you cant install a pcm that is set up for a 3.4 pulley on a stock pulley only thing i didnt realize was for price of headers i would be saving money doing header install then the dp

Tr6 crosses into an AL103.

You want to run the hottest plug you can, too many people jump straight down to 103s and 104s... no reason for that most of the time. If you have a 3.4 with headers there's no reason for you to be even as cold as a 104. I run AL605s in my car on the 3.2/3.3 pulley. I had 104s in there for a couple months and they misfired at low rpm and I had trouble starting the car sometimes... and I got ****ty MPG. Swapped out to the 605s and EVERYTHING was better. MPG, throttle response, power, starting, etc... I did back the timing off 1 degree just because... but I probably could have gotten away with keeping everything as it was.

I gap to .054 just because that's the feeler gauge I have.
Also too cold of a plus can cause misfires.

You should try 605s. You'll ask yourself why you never did after 5 minutes.
Although you're not from up north... I was having cold fire problems in the winter on the 104s. It was a little better, but still annoying when it was hotter out. I still maintain that way too many people are running plugs that are too cold for what they have.

I just see a lot of people with drilled 160 tstats and AL103s on cars with an intake and downpipe.

I was on AL104s in these races vs my friends G8GT
YouTube - ‪G8 GT vs Regal GS PART 1‬‏
YouTube - ‪G8 GT vs Regal GS PART 2‬‏

The only change here was the plugs and retune for the plug change.
YouTube - ‪G8 vs Regal‬‏

I can't say that the plugs are the reason for such a big difference... but I do remember feeling like the car was MUCH quicker on the hotter plugs.

Originally Posted by bluegtp91

I've got a little more than a couple bolt ons

Your cylinder temps determine the heat range though