Denso TT Spark Plugs

[Marukai]

I just came across these plugs on the Denso website. They seem to be the newest addition to the Denso spark plug offering. Does anyone know if these would be better than conventional plugs? I checked Advance Auto Parts and they're the same price as lower end platinum plugs. My Subaru Impreza 2.5i is due for new plugs.

http://www.densott.com/

 

[jazeo]

I just put them in my Tacoma about a week a go and they seem fine, no noticeable difference from the stock plugs which were Denso and NGK.

 

[Johnny248]

They are just a competitive plug for lesser expensive platinums. I've had good like with the NGK G-Power Platinums, they cost $2-3 a piece. I'm sure the TT's are fine, but I think they only sell them at Advanced. What did your Sub call for original?

 

[Marukai]

The OEM factory plugs are NGK

 

[J. A. Rizzo]

How are those any different from ACDelco double platinums?

 

[bepperb]

They don't seem different than any double platinum plugs, except the ground electrode "pad" is titanium instead of platinum, probably for cost.

 

[bmwtechguy]

They are a single platinum plug, yet with point to point firing and are half the price or less than the ACDelco double platinums. The neg ground raised electrode tip is supposed to be titanium enhanced. So far they seem to run very good in everything we have put them in. The only question for me is going to be how long they last in service. But for $2 ea on sale they are a good deal vs the $4- $9 double platinum plugs.

 

[kkreit01]

Where are they $2 on sale? AAP? I've been interested in these as well. They are listed for my application -- along with a few Autolites. I need 16, and they are supposed to be changed every 30k. Thus, the cheaper, the better. I'm a long ways from needing them, but for $2, I'd pick up a set.

 

[bmwtechguy]

They WERE on sale several times at AAP, but not currently. Still, not bad for 2.99.

 

[Kaboomba]

I would not hesitate to buy and try the TT's if I needed plugs.

They basically use the same principle as the NGK V-Power, which is to try to provide the most consistant spark path possible from spark to spark. This is what the two circular electrode edges accomplish.

They might even be smoother than the V-powers, due to having even less potential variation in spark path.

 

[92saturnsl2]

I just purchased a set for my truck. The build quality looks okay, but I wonder about the service life.

The plugs on my truck are so hard to get to, I need something that will last 80-100k like the OEM's. Honestly I'd rather change the timing belt on this truck than the spark plugs.

 

[jwagner162]

as far as ive read the only thing that makes a difference with plugs is the material. w/ iriduim being the longest lasting. that said if it makes a spark it works. my truck calls for iridium and there like $10ea. x8... thats alot for spark plugs i could use 3 sets of copper plugs to get to the equivalant milage mark and save $50 bucks.... i just gotta change em two extra times. to me the plugs with the extra bits on em are just a waste of money.

 

[ARCOgraphite]

Construction, geometry and materials are all equally important in plugs on a lamda control engine. I just bought some to try in a ford waste spark ignition app, one heat range colder than stock (20 v 16). Seems like you would attain aa better and a more realiable lightoff on "backwards" the GND > Center spark with the raised pointset like "pill" on the GND electrode. Wouldnt have though twice about changineg plugs from a Ir a TT, but I would think the iR only work well NOT in a waste spark coil setup - Ir would be hard to fire and exhibit a longer path length on the backwards spark from GND to Centre. Caution: I was not enthused about the build quality for a denso product, showing azimuth and other misalignments out of the box, the oversized GND wire employed and a sharp nose on the GND strap due to worn shearing tooling. Not the nippondenso quality I loved in the HOT-U plugs in the early 90s for the subaru 2.2 (K20pru-11)

 

[Nick R]

Had a set in the Cavalier, they worked okay. No better or different from the NGK V-Powers there were in it before.