tune up.

[LANDY]

i will be doing a tune up on my car this weekend, i have boch iridum plugs. i know most of you like to run colder plugs. need help im n/a
why colder plugs?
which kind?
thanks. LANDY

[ImpalaSlayer]

you can go colder but i didnt notice anything. dont waste the money on fancy plugs.

[LANDY]

what would you recomend?

which ones are the colder ones?

[RF Overlord]

blackbeauty, unless you have a tune which requires cooler plugs, they will do nothing for you.

If you can return the Bosch Iridium plugs, I recommend you do so and get good ol' plain-jane Motorcraft copper pugs...a LOT cheaper and work just as well. It's been pretty well determined that iridium plugs do little or nothing to be worth the extra money.

[cougar9150]

Really going to colder plugs wouldn't matter without a colder thermostat and possibly a tune.

I'm replacing the Denso Iridium plugs I have in w/the car the NGK TR-6 plugs but I also have a 180° T-stat. I would go with either stock or a quality equivalent plug. I like NGKs or Motorcraft plugs usually.

[LANDY]

i im also flushing the radiator and installing 180 degree thermostat. i do have a lidio tune
thanks for all good ol' help.

[fastblackmerc]

i im also flushing the radiator and installing 180 degree thermostat. i do have a lidio tune
thanks for all good ol' help.

But the Lidio tune has to be programmed for the colder plugs / stat.

[LANDY]

But the Lidio tune has to be programmed for the colder plugs / stat.
:eek::eek: oh! not expecting that.
would it hurt it?
im about 100miles from reinhart automotive but i was waiting on installing other parts to get a dyno tune.

[ImpalaSlayer]

i see no reason why a new tune would be needed

[Dre]

I'm changing mines this weekend. I have 4:10's and a Zack tune should I use NGK tr6 or stick with motorcraft? I was thinking sp 505, but I don't have a 180 stat.

[DOOM]

what would you recomend?

which ones are the colder ones?

Motorcraft SP-505 are one step colder plugs.

[fastblackmerc]

i see no reason why a new tune would be needed

If he doesn't get a new tune to compensate for the colder plugs & stat then he's not gaining anything.

Colder plugs & stat allow for a bit more timing.

More timing = more power.

[ctrlraven]

I have a Zack tune and run TR6IX plugs which are gapped around .036. Some say it's silly to have S/C gapping plugs on a NA car but my runs prove otherwise lol.

[LANDY]

I have a Zack tune and run TR6IX plugs which are gapped around .036. Some say it's silly to have S/C gapping plugs on a NA car but my runs prove otherwise lol.
so this are consider colder? and i see u guys have different opinion about the tune needed. dont kno what to do i do kno that i dont want to spend unnecessary money.
what difference did you notice ctrlraven

[ctrlraven]

TR55 is the stock gap for our car, TR6 is one stage colder which if you have a tune you want. I went with the TR6IX Iridium plugs because I got them dirt cheap. At least I know with Zack's tune that I have I have slightly more timing adjustment that other cars he has tuned, smaller gap means more spark firing.

I had the TR6IX plugs and GMS coil connectors installed on a DR tune, my best 1/4 time was 14.25 all day long. After Zack's tune in warmer weather I pulled off a 14.19. I'm not saying spark plugs made the difference but I noticed better power through the rpm band, smoother idle and increased gas mileage on the DR tune and of course better all around on Zack's tune.

I will continue to use the TR6IX plugs because so far with 70k+ miles on them they have been flawless so why fix something when it's not broken. Def. get one stage colder Motorcraft or NGK plugs, it's more of a insurance thing since if you drive aggressively or go WOT a lot the tune will make adjustments and want to add more timing which you will need plugs that can keep up with the demands.

I also recommend getting the GMS coil plug connectors when you change the plugs. They are like plug wires but so much better than stock ones.
http://www.summitracing.com/parts/GRN-28-1705S/