fastsspr

iTrader: (49)

I have a 99 z28 with 62k miles and i chaged spark pulgs i use TR6 and new MSD wires because i going to use 100 hp N2O shoot. Now after that the car run very smooth but lost some power and throtle rsponse but when i put gas in the tank is like it have a hole in the tank.
What you guys think about this situation?

fastsspr

iTrader: (49)

i never toght that the change of plugs going to be so bad in my MPG.
So my next tried going to be go back to to TR55ix for daily driving and TR6 only to use the bottle! To see if i recover my MPG in a daily driving.
Now anyone else have experience this lost in MPG with TR6???

Blk98Vert

iTrader: (2)

Nope, mine picked up if anything

mjs1012

iTrader: (36)

imo you might want a better plug for spray. something like the ngk BR7EF.

CHADsterss

Mine did the same... I only lost about 1 mpg before the tune.. It just got a nitrous tune last night so I haven't got to see any fuel mileage yet

fastsspr

iTrader: (49)

Why better spark plug i only going to shoot 100 hp! Is no need for a coulder plugs for that amount of NOS even i know i can keep the tr55 with 100 hp of n2o.


and your car feel a little slower on gas with them?


I like to know why this is happening with coulder plugs. The amount of fuel the factory tune use is the same with both spark plus. Why the heat range play can a so big deference in MPG???
TR6 should burn the fuel as good as the factory heat range i yhink.

Darkman

iTrader: (2)

A colder plug should have no direct effect on performance or gas mileage as long as the plug is "hot" enough to not foul under the specific operating conditions. For example, a colder plug may not foul during highway speeds or full throttle but could be too cold to withstand low speed operation or extended idling. Colder plugs can, of course, indirectly effect performance to the extent they permit improved tuning parameters, such as more timing advance, as compared with hotter plugs under the same circumstances.

Sales1@Texas-speed

Simply swapping to a slightly colder plug should not be yielding the ill effects your claiming. Ive ran colder plugs than the TR6 in stock cars with next to no changes in performance or mileage while simply running around all motor, so it seems odd your claiming to have a drastic drop in mileage and performance from a simple plug swap.

dodson55

iTrader: (18)

what did you gap the plugs at and are they any chance you coulds have closed the gap or cracked one installing them

CHADsterss

I only noticed a performance loss because of my nitrous tune and it still wasn't too bad

skopers3

iTrader: (3)

Did you buy heavier shoes at the same time?

Neal@NitrousOutlet

Playing with fire with thinking you can leave TR55 in that motor and be OK. While you might be able to get away with TR6 plugs in the car with a 100 shot BR series would ultimately be a better choice for you. Think of it this way, would you rather have a large safety net to fall onto or a small one to fall into.