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Administrator, Resident Tater Salad
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Discussion Starter · #1 · (Edited)
OK, the original topic was getting too long, so we'll move this over here.

http://www.cruzetalk.com/forum/34-1-4l-turbo/21850-hesitation-gone.html

If you have switched out your stock iridium plugs for another plug (NGK BKR7E coppers or BKR8EIX iridium), please post:

-Plug type
-Plug gap

-Tuned/stock
-What grade of gas?
-Impressions - any drivability issues or blow-out?
-Mileage plugs have been in your car.
 

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Administrator, Resident Tater Salad
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Discussion Starter · #2 · (Edited)
Me:

-NGK BKR7E-4644
-0.032"
-Stock LT 6MT, resonator delete
-Drivability is phenomenally better - no hesitation, stumble on acceleration
-89 octane
-1500 mi
 

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391 Posts
-Plug Type - -NGK BKR7E-4644
-Plug gap - currently .032
-Tuned/stock - stock
-What grade of gas?
-91/93 oct
-Impressions - Reduced hesitation at lower rpm's. Nearly same mpg's. No real issues with A/C on. Overall, acceleration feels smoother.
-Mileage - 150mi
 

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-Plug gap - currently .032
-Tuned/stock - stock
-What grade of gas?
-91/93 oct
-Impressions - Reduced hesitation at lower rpm's. Nearly same mpg's. No real issues with A/C on. Overall, acceleration feels smoother.
-Mileage - 150mi
What plug are you running?

Me:
bkr7e, gapped .035", 93 oct
stock 1lt auto, reso delete
seems a little smoother and more responsive at throttle tip-in, more grunt up to 3k rpm
great drivability, seems a bit better on fuel too
1300 miles on them
 

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1,943 Posts
-NGK BKR7E-4644
-0.032"
-Stock Eco 6MT, CAI
-Drivability has slightly improved only from 750 to 2300 rpm....even using 93 octane this last tank but nothing I would brag about. No mpg improvement. Going back to 89 octane.
-1000 mi
 

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381 Posts
-Plug type-NGK BKR7E-4644
-Plug gap-0.032
-Tuned/stock-STOCK
-What grade of gas? 89
-Impressions - much smoother engine on acceleration and idle, very little hesitation and seems to shift better also. Co-worker noticed this also. MPG is about the same.
-Mileage 2000
 

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4,643 Posts
-NGK BKR7E-4644 and BKR8E-11
-0.035"
-Stock Eco 6MT
-Applies to both plugs - 91 octane E0 Shell V-Power (Canada) - Low RPM drivability improves significantly, smooth under load down to 900 RPM. No observed difference in mileage, and none was expected (my Gold Hypercruzer tank was mostly completed on the BKR7E). Ability to go to lower RPM smoothly may encourage more efficient driving in some situations. Plan to try slightly smaller plug gaps as I get the odd random hesitation/misfire/something or other around 1500 RPM which may or may not be related to the plugs or gaps (but still a huge improvement over iridium plugs).
-Roughly 1000 mi so far​
 

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Bkr7e 4644 at .032
budget tune lt auto
93oct
low end has improved so much that i dont feel quite the surge of power at 3k as on the stock plugs. It still takes off from 3k. It just doesnt have that all of the sudden power. So im assuming there isnt as much of a power dip before 3k.
roughly 200 miles
 

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BJR7E 4644 Gap .034
Trifecta pmPremium Tune with Big Three Engine grounds.
More pep off the start.
91 Octane and Gumout Fuel systems cleaner once a month since brand new.
About 500 miles.
Sent From An Antique,
My Original Droid.
 

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-Plug type - BKR7E
-Plug gap - .030
-Tuned/stock - Trifecta Premium, Borla Cat Back, K&N Drop In
-What grade of gas? - 93

-Impressions - much better low end, smoother power delivery - no Blowout
-Mileage - 1100 miles
 

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-Plug type - BKR7E 4644
-Plug gap
-0.025
-Tuned/stock -
Tuned w/ water+meth
-What grade of gas? -
94 (ethanol free)
-Impressions
- Heavy blowout at stock gap 0.036, reduced it and its solid now. Engine doesn't judder under heavy load under 2000 rpm
-Mileage plugs have been in your car -
1000
 

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2,241 Posts
plug type-NGK BKR7E 4644
plug gap-0.35
tuned/stock-stock with K&N drop in filter, big 3 grounding kit.
model-2012 Cruze Eco 6mt
grade of gas-93 octane
low rpm stumble completely gone. seems to pull better thru the gears. driveability is definitely improved.
plugs have been in car about 500 miles

Sent from AutoGuide.com App
 

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906 Posts
NGK BKR7E-4644
.028"
Trifecta, sri, dp
91 oct
Big difference from stock
50,000 miles

The pic below is of my stock plugs taken when changed @ 45k..

Product Auto part Spiral Metal



Sent from AutoGuide.com Free App
 

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Plug type - BKR7E
-Plug gap - .030
-Tuned/stock - Trifecta Premium
-What grade of gas? - 93

-Impressions - Much smoother low end, no bog after letting off clutch just instant acceleration
-Mileage - ~1500
 

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Well I 'll be the stick in the mud. I put my origional plugs back in at 100 miles. Butt dyno said I lost power in the mid rpm range.

VT tune, .030 gap, 93 Shell gas, K&N panel filter, and intake delete.

anyone want 4 BKR7E plugs to try free? Must pick up.
 
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Plug type-NGK BKR7E 4644
Plug gap-0.35
Tuned/stock-stock with res delete and foam delete.
Model-2013 Cruze Eco 6mt
Grade of gas-93 octane
Thoughts- low rpm bog gone with a/c and stop and go heat soak. She runs low revs all the way up to fuel cut smooth as butter. I have to relearn the car since I am used to bog and how much I had to launch 1st gear to not get t boned when I right turn on red. The steering wheel vibration in 6th gear at 43 mph is gone, it's just dead space and really slow acceleration till the turbo wakes up.
Time driven on them-Ran them about 45 miles but I detected change shortly after when I spun the inside tire leaving the driveway.
 

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bkr7e 4644
.034
budget tune and res delete
2012 lt auto
93 oct
bumped gap up from .032 and still no blowout. carr feels even stronger in the mid range.
only 30 miles on this gap.
 

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Well I 'll be the stick in the mud. I put my origional plugs back in at 100 miles. Butt dyno said I lost power in the mid rpm range.

VT tune, .030 gap, 93 Shell gas, K&N panel filter, and intake delete.
Pete, do you still have your plug resistors bypassed? IIRC you had done this.
 
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