Ijust looked at NGK's website and it looks as if the 55IX is about 2 heat cycles hotter then the tr55 Vpower. I am getting some small amounts of oil on my tr55's. I have a H/C pkg. 498rwhp but do not drag it. Any inputs about using the hotter plug for the street to burn that oil off? Will it make my engine run hotter? thanks,anyone

 

I have been running the TR55 Vpower plugs for a few years and the car runs good - sometimes I feel a little stumble at idle. I change them out once a year, probably at 8,000 miles and they always look good - no signs of wear or rounding on the edges of the electrode. I recently checked the plugs and they look a little dark - not oil fouled - but like they are too cool or the car is running rich. I have a 160 stat and the fans come on at 189 degrees.

I am about to try the Iridiums NGK TR5iX. Want to see if they are a little hotter and burn off the fuel mix better.

 

I have the CARTEK stage 4cam[ don't know the specs ] but at idle if u stand behind the vette it burns your eyes. due to the valve overlap. u'd think i was burning TEAR GAS. I live tooo far to be driving to upper NJ. There is a good shop here in Balto.and I'll give him a shout. The last thing i want to do is run too hot a plug and waste my motor.

 

Hey guys, I'm installing Bosch Platinum Ir Fusion plugs this morning in my 2001 Z06. I'll let you know how they work. If they don't perform, i'll just replace them. It's only spark plugs. Not that big of a job.

 

Where on the NGK web site do you see info on heat cycles?

 

 

I just changed mine. Tried something different this time. Pulstar plugs. I know "Snake oil" but thought I'd give them a try.

http://www.pulstarplug.com/

Did 3 dyno pulls before and after. 297 RWHP before, 304 RWHP after. And I can really feel the difference in power. So far 2 more mpg (But I have been heavy on the pedal trying them out.)

 

put bosche fusion in today going to track sat went last week so //I have baseline stay tuned I'll report back sat. nite

 

I have run the NGK TR55s for years and just installed the NGK TR5iX iridium plugs. Thought I would give them a try after doing some research. Big difference in the feel of the car and the throttle response.

I think iridium are the way to go but thye are pricey. I got them for $7.39 each online. Shipping & handling was about $7.00.

 

7 RWHP from just plugs??

 

SERIOUSLY???? were plugs the ONLY change? were the 297 and 304 numbers from the same dyno on the same day??
please let me know!!

 

Yes, just the plugs. The car has 82,000 miles and it had the stock wires and I assumed it had the original plugs and wanted to change them. I happen to know someone with a dyno and so went there and we did the 3 pulls on that dyno, changed the plugs on the same dyno (Didn't move it off the dyno to change plugs) and did 3 more pulls.

When we took off the wires and pulled the plugs someone had already changed to regular A/C Delcos. The plugs were fine, not fouled. No sign of any problem with engine with the dyno software to show the car was misfiring or anything pre change.

We changed the wires and put in the Pulstar plugs. I also notice a significant improvement in the seat of the pants feel. It was costly. The best place I found was ebay for $199.00 free shipping for the 8 cylinders.

Anyone else want to try them to reproduce the improvement? The ebay guy did send me a dyno from a 2002 Corvette with good improvements before I bought them. He also mentioned the car will get better millage once the computer adjusts to them. I got 2 more mpg with the first half tank and that was with lots of heavy foot driving.

I think it is real. And for less effort than a new intake for same or maybe more gain.

 

Can someone contact a forum vendor to get some of these sets for the C5 at wholesale to do a group buy?

 

The way I'm constantly hammering my car high rpms I run NGK TR6's.

 

IT was time for plugs,with great interest Ichecked out pulstar,sure sounded good ,$200 way too much$$$, I also don't think a new vette ign. systemis so inefficient that the addition of a capicator plug is going to make extra power, unless ssomehow the ignition timing is slightly increased/decreased.I checked the website they touted different vehicles w/torque & h.p.gains listed,and procedure listed and who did the testing but it seems they are related/same company.Not saying facts aren't correct, but maybe biased..MINITECH do you have any association with this company? your post seems like it was taken from pulstar website.and six dyno pulls from a friend just to check out some plugs, lot of time on the dyno.nd seat of the pants can really feel it 7H.P. thats about 2% you can feel that ?thats some butt. And finally 2 more mpg assuming you get about20 to 25 mpg isn't that about a 10% increase? M aybe I'm missing something here but to make more power it's gotta come from somewhere usually consume more fuel , but to increase fuel milage you use less fuel.so what gives here? Isn't there a procedure used in evaluating an engines H.P. and efficiency if I recall it's BSFC FOR BRAKE SPECIFIC FUEL CONSUMPTION that measures how much fuel used in pounds to make a certain amount of power. this test was not used.I am not a doomsday kind of guy I would love for these plugs to work ,but I've just seen so much hype before about "miracle products" I actually hope I'm wrong about my skepticism as these plugs would help the energy crunch and help performance at the same time.Minitech, I do not question your honesty or integerty on your post, there were just so many coincidences that I felt I must speak up.
'

 

No connection with the company at all. I just had heard of these type of plugs before and wanted to try them. And I figured since I was changing plugs anyway it was a bit less than $200 because I would have bought different plugs. I do notice a good difference in the feel of the drive. Seems more responsive and more powerful. I do agree 7 RWHP is not that much. (But many, many mods done are for less RWHP and for more money.) I have seen some products touted with dyno curves that you really would need a high powered microscope to tell the difference in curves but they use it to prove their product.

As far as using the dyno at all on just the spark plug change: I went to the shop and at the same time spent most of the day working on something else on his C5. We just traded labor for the day and we both got something out of it. So I think he ran an extra pull or so just as a favor.

Would be nice for one more person to try it just so I'm not the only one seeing a change.

 

I'm happy to see no connection unbiased opinions help us weed out the BS. I was tempted to try pulstar but $100 was all I was willing to spend.But wanted to try something diff.Read about bosch fusion liked what I saw,reputable companyw/ long history ,supplier to other major car makers(I think chevy buys injectors)Platinum&Iriudnm plus the way the ground straps are located they resemble a side gapped racing plug except has 4 ground straps, my concern,however is they might cause hot spots,so how bad could they be.My only expectations are they equal performance of delco iriudum if not, whooshe, out they go. But I've been surprsed before .I'm going to track tommorowI'll post my times & MPH........ P.S.they were only.$4 ea. but have promotion for $2 ea. so total invest only $16 Used extra $ to buy wires

 

OK I went to track sat to run in corvette challenge with my bosche fusion plugsran two weeks ago went 12.28 @115mph ,W/ delco irridum, first pass sat 12.66 @ 112mph but this day humidity had soared and temps were in 90's as prior runs temps & humiity were less low 80's less humidity plus rain delays (twice)so runs were ar from back to back 2nd run first round of elim. I lifted before end so inconclusive, third run 12 .60(slight bog off line so et was off) but 113.77 so mph is in ballpark so jury still out for fusion VS delco irrium next track day 4 weeks I'll have enough runs to know how they stack up. so far I feel they will equal performance .PS as my et & mph were off but temp & humidity were so bad I asked a number of the drivers whose cars are very consistant they all said their cars were all off 3 to 4 mph

 

My experience with the new E3 Diamondfires, they lasted about 30 minutes in a stock '02 Z06. Car started missing and got worse and worse. No picnic to change plugs, don't bother with them. I returned them to PepBoys.

 

What he ^ said.