Spark Plugs, Timing, and more

[Higgs Boson]

if you have HPT make sure you are logging the right thing. you can take timing out all day long and it will still pull if it is torque management related or traction control, etc. you have to make sure the right tables are zero'd and the right features are turned off so you can accurately log it in the first place.

[Iam Broke]

I see a burst of 2-3* KR at ~5400 rpm on the stock tables at times when IAT's rise over 80*f. Not consistant though. TM is disabled and it gets worse as I lean it out past .83 lambda. Running 101 octane E60, might try the TR6 plugs if it persists. Hi flow cats went on yesterday, I'll see if that helps it first.

27* total logged advance @ 6k is a buttload of timing on stock tables though.

[Higgs Boson]

I have some TR6 sitting on my desk right now I just gapped. I am going to put them in and do some logging after I edit this photoshoot from this morning. See if I can squeeze a couple more degrees out of it.

[epstein]

This post isa perfect illustration of why this forum works..... Information shared is price less.... I was just changing my plugs from factory ss to zl1 factory..... I just am not a fan of ngk but great info non the less. Thank you

Brian

[thesaint]

Is this a yes for all people with headers, intake, tune for better drivability and performance. Or is it really a matter of how and where you drive. In other words if you put in tr6's and then re-tune will you car be happier.

[Aries240SS]

I swapped to the TR6's yesterday. The difference was immediately noticeable with knock readings staying around 1-2 in the 4500-5500 range rather than 4-5 where it was previously. Idle settled out a bit more as well.

[Higgs Boson]

Originally Posted by thesaint

Is this a yes for all people with headers, intake, tune for better drivability and performance. Or is it really a matter of how and where you drive. In other words if you put in tr6's and then re-tune will you car be happier.

its a depends. if you have a tune and install tr6 you will probably want to retune, you might squeeze out a little more spark timing. if your car is a daily driver with a couple bolt ons, I would recommend staying with a stock heat range (tr5) and just living with a couple less degrees of timing. of course, if you don't have to sit in traffic or live in the city with lots of stops, it may not be a big deal.

anthony is right that it can contribute to less timing pull but they also MAY not be ideal for idle and easy driving conditions. its a try it and see mod fo sho.

[thesaint]

Got it, I have lots of stop and go, and long lights and almost no highway driving, will just stick with stock plugs. Nice read though.

[kaler]

Originally Posted by Higgs Boson

if you have HPT make sure you are logging the right thing. you can take timing out all day long and it will still pull if it is torque management related or traction control, etc. you have to make sure the right tables are zero'd and the right features are turned off so you can accurately log it in the first place.

After I get done doing the cam,headers in my sons 4th gen LT1 and get the blood cleaned up and my hands bandaged. lol I will put the tr6's in and do some logging what are you running for gap?

[Higgs Boson]

Originally Posted by kaler

After I get done doing the cam,headers in my sons 4th gen LT1 and get the blood cleaned up and my hands bandaged. lol I will put the tr6's in and do some logging what are you running for gap?

.040

[dekan513]

i gapped mine at .035 but im gonna be sprayin 100 to 150 shot , i also went with the 7 heat range

[Medi0cr3]

How prevalent should it be to retune after moving from tr5 to tr6 with headers/exhaust/cai?

[Higgs Boson]

Originally Posted by Medi0cr3

How prevalent should it be to retune after moving from tr5 to tr6 with headers/exhaust/cai?

depends on how good it was before.....u might squeeze a couple more degrees of timing out.

[Falundir]

I'm going to throw these in and retune. I'll let you know my results, however I'm not paying for another dyno.