Kharizma

iTrader: (6)

I was wondering what the best spark plugs were for the 2000 GS400?

Bosch? Denso? Torque Master? any other brands..?

I want better MPG, and hopefully some more HP and TQ gains as well... all for a fair price.. any ideas?

crilla

i do want to know this too for my gs

GSteg

iTrader: (15)

I wouldn't let Bosch touch my car, simply because i've ran them in the past and they are mediocre at best, at least the so called +4 stuff.

NGK and Denso gets my vote, iridiums of course. They are well known companies, and are known for their OEM replacements.

I installed the TM plugs this afternoon. Seat of the pant tells me my car feels quicker (more power). Black mark on road will indicate that . It's too soon for me to tell about the reliability, but out of all cases, i've only heard one or two bad cases of TM plugs in a lexus.

Lexbox

I bought the TM's also. But unfortunately I havent installed them yet.

bmgs400

I've heard good things about TM plugs. I'll need plugs soon and will most likely get TM and hope to see a difference in performance.

NGK plugs are good.

Belshe1993

I am jumping on the band wagon and going to throw in some TM plugs here pretty quick..

Blue98Gs3

iTrader: (1)

I put TM's in my 98 gs300 with around 40k miles just since they had been in there so long. When I was in there I also cleaned the Throttle Body and butterfly, definitely worth it to get those plugs, they give you a few tq/hp

ksu1998

iTrader: (1)

Where you getting your TM plugs red?

126K might be on the 2nd set of plugs still..time for a change

ILOVEGIRLS

iTrader: (3)

i use TM. a bit of a pain to install but i got it so i dont have to change them out so often..

bazop

I've had the TM's on my 430 for about a year now- I can't tell any difference in power or mileage.

Kharizma

iTrader: (6)

i got the TM's - i could tell the difference, easier starts, quicker throttle response - i'd recommend them