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2007BMW335i 2007BMW335i is offline
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Car: 2007 BMW 335i
Default RUTHENIUM HX Installed PSPE version. 0.021" gap - 06-22-2019, 04:57 PM

I had the Autolite APP 5682's , about a year old. I took 2 data logs in the morning with the old plugs and 2 in the evening with the new plugs. (NGK 91784 aka LKAR8BHX) The orange and green lines are the new plugs and the blue and red lines are Autolite Double platinums. I didn't accelerate from the same rpm each time so below 4000 rpm you cannot really compare but once the boost stabilized you can see the new plugs made a huge difference. It was 3 cooler but I used SAE correction for temperature.

It was not missing or having timing corrections on the old plugs.

New Plugs: https://***********/u/scottxp800/log...7-8-9-10-11-21 data zap dot me no spaces for the ************* site blocks link?

Approximate gap 0.021" not dragging on a 0.020" feeler gauge and a 0.022" would not fit.

This is a custom (Wedge/Ken) E50 tune 22-23 psi stock turbos. FBO except for outlets, no cats. I need to set my shift points up to see where the HP drops off and reset them to what these plugs are doing for HP and TQ at higher rpm's.

I'm wondering what kind of problems people were having with GTR plugs. Other than maybe fouling early due to heat range I can't imagine why there would be an issue.

Not sure anyone has tried this particular plug.(that I have seen)

PSPE (projected square platinum electrode) provides the best ignitability and service life for high-heat engines. This NGK-patented design is recommended for turbo and supercharged engines.

Ruthenium HX„ Spark Plugs | NGK Spark Plugs
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VRSF Charge pipe, 5.5 IC, Dual Cone, Cold side inlets, dual 3" down . F&R c@t delete, walbro 450, E50 Tune, 23 psi, N20 TMap, Stock snails, MHD, xHP.

Last edited by 2007BMW335i; 06-22-2019 at 05:04 PM..
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2007BMW335i 2007BMW335i is offline
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Default 07-09-2019, 11:02 AM

I would sure like to see someone else try these plugs with either a real dyno or virtual dyno results. Look at the power and torque on my virtual dyno graph above 4200 rpm... My results make it look like just these plugs give 10-20 hp/torque. That's insane for a spark plug if it's for real. I don't really want to go back to the old plugs just to verify.


VRSF Charge pipe, 5.5 IC, Dual Cone, Cold side inlets, dual 3" down . F&R c@t delete, walbro 450, E50 Tune, 23 psi, N20 TMap, Stock snails, MHD, xHP.
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Rule77 Rule77 is offline
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Car: 08 E90 335i
Default 07-23-2019, 08:13 PM

Can anyone suggest what I should gap NGK 97506 plugs with stock turbos?


08 E90 335i
Montego Blue
JB4/MHD BEF
BMS DCI
BMS OCC
BMS Cowl Filters
VRSF ⬇️ Ps
BMS Chargepipe
TIAL BOV
BMS Pedal Tuner
BMS PCV VALVE
NGK 97506 @ .022
H&R Springs
19' 666m Wheels
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THE BEAST THE BEAST is offline
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Default 07-23-2019, 10:11 PM

Quote:
Originally Posted by Rule77
Can anyone suggest what I should gap NGK 97506 plugs with stock turbos?
I would do .022
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Rule77 Rule77 is offline
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Default 07-24-2019, 05:49 AM

Quote:
Originally Posted by THE BEAST
I would do .022
Thanks


08 E90 335i
Montego Blue
JB4/MHD BEF
BMS DCI
BMS OCC
BMS Cowl Filters
VRSF ⬇️ Ps
BMS Chargepipe
TIAL BOV
BMS Pedal Tuner
BMS PCV VALVE
NGK 97506 @ .022
H&R Springs
19' 666m Wheels
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