Stock stereo & E3 spark plugs?

91ma70 · 03-03-2010, 10:16 AM

Can someone tell me what the grey plug is for in the back of the stock stereo? i know the black one is the antenna-

Has anyone used E3 spark plugs on a NA or to be specific, what are some of the better spark plugs recommendations other then the ones listed on the tsrm?

Does the mk3 have pcv valves or are they just hoses that connect to each vavle cover, there seems to be oil seeping around the edges and near the TB.

reydio · 03-03-2010, 06:21 PM

Some years have an external amp underneath the passenger seat, it could be it.
As for E3, I have no experience with them. And I have not run with anybody running them yet. Can't go wrong with NGK, but if you want to try them, let us know how they perform.
Yep, no PCV Valve....check the valve cover if the holes are plug up, clean them up. 20 years could build up sludge.

TripleC · 03-03-2010, 06:45 PM

I know some one will probably take a dump on this but i think the less metal you have in the way of the spark, the better it's going to burn in the cylinder. I think the e3's have 3 or 4 points in essance creating a good burn area but potentially robbing power. i think the NGK plugs are better

kamikazemkiii · 03-03-2010, 11:28 PM

Ive heard were the e3's burn through pistons.

cre · 03-04-2010, 02:18 AM

I suppose it's possible, but I've never seen proof...

There's quite a bit to this subject, but the short and sweet of it is that IF there are any gains to be had they're no greater than you would see if you used NGKs and simply indexed them for optimum ignition.

NGKs are excellent and very reliable; Most of the heavy hitters I know of in the Supra world are still running the OEM specified plugs (although some are running different gaps and/or temps). NGK copper aren't bad either, they need to be replaced more often, but they're inexpensive.

Save your money for other upgrades, there's no power to be made from these.

91ma70 · 07-12-2010, 07:54 PM

just an update:
the grey plug behind the stock H/U is the Diversity antenna that is mounted on the back glass under the defroster it has its own lines on the bottom of the hatch glass and has 1 wire going onto it. Just in case anyone was wondering

03-03-2010, 10:16 AM	#1
91ma70 3" Exhaust Join Date: Feb 2010 Location: Irvine/Lancaster CA Posts: 61	Stock stereo & E3 spark plugs? Can someone tell me what the grey plug is for in the back of the stock stereo? i know the black one is the antenna- Has anyone used E3 spark plugs on a NA or to be specific, what are some of the better spark plugs recommendations other then the ones listed on the tsrm? Does the mk3 have pcv valves or are they just hoses that connect to each vavle cover, there seems to be oil seeping around the edges and near the TB.

03-03-2010, 06:45 PM	#3
TripleC 3" Exhaust Join Date: Nov 2009 Location: Fort Collins, CO Posts: 103	I know some one will probably take a dump on this but i think the less metal you have in the way of the spark, the better it's going to burn in the cylinder. I think the e3's have 3 or 4 points in essance creating a good burn area but potentially robbing power. i think the NGK plugs are better __________________ 1JZGTE ,R154, Hallman Boost Controller, HKS bov, HKS Mushroom top Air Filter, HKS Front Mount Intercooler, Greedy Turbo Timer, PLX300 AFC, Custom Divorced Y-pipe, Custom Intercooler Pipeing, RS-R Concept Exhaust, Optima Red Top Battery, Strut bar Brembo Rotors, A1 Traction arms, Megan Coilovers, Stern ST 2 wheels rear 265x30 r19 - front 245x35 r19, New Front Lip, 18 x 8 and 18 x 9 MRR HR2 with whatever for Drift treads 2 additional C12A turbo's(Extra)

03-04-2010, 02:18 AM	#5
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	I suppose it's possible, but I've never seen proof... There's quite a bit to this subject, but the short and sweet of it is that IF there are any gains to be had they're no greater than you would see if you used NGKs and simply indexed them for optimum ignition. NGKs are excellent and very reliable; Most of the heavy hitters I know of in the Supra world are still running the OEM specified plugs (although some are running different gaps and/or temps). NGK copper aren't bad either, they need to be replaced more often, but they're inexpensive. Save your money for other upgrades, there's no power to be made from these. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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03-03-2010, 06:21 PM	#2
reydio Intake Join Date: Dec 2009 Location: Pearl City, HI Posts: 33	Some years have an external amp underneath the passenger seat, it could be it. As for E3, I have no experience with them. And I have not run with anybody running them yet. Can't go wrong with NGK, but if you want to try them, let us know how they perform. Yep, no PCV Valve....check the valve cover if the holes are plug up, clean them up. 20 years could build up sludge.

03-03-2010, 11:28 PM	#4
kamikazemkiii 3" Exhaust Join Date: Mar 2009 Location: raleigh Posts: 138	Ive heard were the e3's burn through pistons.

07-12-2010, 07:54 PM	#6
91ma70 3" Exhaust Join Date: Feb 2010 Location: Irvine/Lancaster CA Posts: 61	just an update: the grey plug behind the stock H/U is the Diversity antenna that is mounted on the back glass under the defroster it has its own lines on the bottom of the hatch glass and has 1 wire going onto it. Just in case anyone was wondering