jonnylaw

iTrader: (3)

thx for sharing, at least they sent u a new plug, but there's no way your butt is that sensitive to notice 2-3 hp on the car. Also, again I'll say that I have yet to see a proper testing of these plugs like the srt4 test.

This is what needs to be done:
1. Z/G at respected dynos shop for testing.
2. SEVERAL brand new spark plugs are bought:
A. NEW oem plugs
B. SEVERAL new "performance plugs" (ngk iridiums, denso iridium, etc. In addition to the pulstars)
3. Testing of the plugs on the dyno under same operating conditions.
4. 5 pulls on each set of plugs. All numbers recorded. Maximum and average noted.
5. Post and evaluate results

Basically just emulate the srt4 test but on a g35/350z that's the only way to know.

I'd even contribute some funds for this kind of testing if it ever happens bc it would be nice to get to the bottom of this.

Let me just add that the srt4 test that ran the pulstars proved they were a wash imo, the NGK iridiums posted the most consistent decent gains over stock for 1/4 the price and more safely.

The srt4 test can be found online, I'll try to search for it.

Edit: the srt4 results are on post #34 of this thread.

Wired 24/7

iTrader: (2)

check out the tuning forum for a rather inconclusive "before and after dyno" of the pulstar plugs

https://my350z.com/forum/engine-and-drivetrain/344700-pulstar-plugs-dyno-run-results.html


1. Runs do not go to redline
2. Many many dyno runs were done to achieve the "gains"
3. Guy claims "a lot more midrange power" even though there is no midrange gain on the dynos
4. Highly suspect results, and minimal at best.

rcdash

iTrader: (18)

To properly control the study, the dyno operator/tuner needs to be blinded to which plug set is in use, the order in which the plug sets are tested needs to be random, and each set needs to be tested twice (PITA, but that's what is needed).

jonnylaw

iTrader: (3)

+1. Agreed.

I'll willing to contribute $25 to this test if it can be setup.

I'm sick of seeing the tests where they only record the best run of the pulstars (what if besides that one pull, every other run is much lower--it's misleading and a complete test is needed).

From the SRT4 test, the pulstars' first pull did produce some nice gains, but every other pull done showed much less and was not consistant whatsoever.

The NGK iridiums were most consistent and offered the most reliable gains throughout the entire set of pulls. They are also $6 a pop.

spark plugs, oem basic, or performance, have a limited life span and the plugs I desire would give good performance, consistently, have good life, and be decently priced. To me, the NGK iridiums fit the bill.

Pulstar can take their overpriced plasma plugs and sell them to sheep.

I am not going to blindly follow a skewed test's results or other sheep who feel their magic butt dyno can feel a 1-2 whp gain or a 1 mpg increase. What a joke.

Prove me wrong, but do so correctly in the method laid out by me and rcdash, not in a misleading or incomplete fashion.

The test would be very doable, just a little time consuming and pita like rcdash said.

Like I said, I'll contribute $25 to this if it can be put together and others are willing to contribute.

[jonnylaw humbly steps off his soapbox]

rcdash

iTrader: (18)

I would contribute, but I'd be more interested in a high boost application.

turismo

iTrader: (33)

Excellent thread. Very informative.

Azreen Khan

Can this Pulse Plug DG-1 compatible with FI ( Turbo ) Application on VQ35DE - G35/350z? Anyone got the Dyno result for FI? ive seen only NA dyno result.
I dont know wether these plugs will compatible with FI VQ35DE.

Ziggyrama

iTrader: (15)

For FI, I'd be concerned with heat range rating first. The plug that goes into NA VQ engine will not be sufficient for FI application and vice versa. Another point is the gap and how easily this plug can be adjusted. FI applications require smaller gaps to minimize spark blow out during high boost. Lots of things to consider.

XxKwestxX

iTrader: (5)

what happenend to the OP?

ladyzed

iTrader: (4)

^ installed Pulstars and him and his engine blew up.

lynch_pride

I just recently installed the DG-1 plugs and I am not very happy with them. Not to mention after like 2 miles my SES light came on although I did just read thaat I need to adjust the timing with these plugs. I am hoping going back to platinum plugs for now until I get my tune done.

lynch_pride

anyone else have this problem?

Ziggyrama

iTrader: (15)

Have you pulled the code? If so, what is it? Knowing that will help you diagnose the problem. Let us all know.

koreanwith350z

iTrader: (1)

so i'm guessing the spark plugs are no go?

BrazenZ

After all the personal insults and name callling I doubt that he would come back for more.

go-fast

BrazenZ

^^^^Yes, the OP made a ridiculous statement that his tuner said that "the pulstar plug made is car run leaner". Another forum member called him a fool, which really accomplished nothing, I would have been more impressed if he could/would have explained why that wouldn't happen. It's easy to call someone who doesn't understand a fool; It takes more effort to educate them.

bswanny

iTrader: (4)

Okay, I just bought the plugs so if someone wants to set-up this so called unbiased testing I'm down for it.

evobunny

iTrader: (1)

so whats the out come/

Nexx

iTrader: (41)

only ricers believe that a certain spark plug will make a major difference.