boosted k20

What spark plugs do most of you guys use in ur high HP setups? Resistor or non resistor plugs? I was having issues tuning one of my friends cars back in october on CROME PRO. the car wouldnt make past 400whp. it would break up in the high rpms and power would fall off drastically. i changed plugs (NGK 10's part # 5820), plug wires, distributor, gapped plugs tight, etc. but had the same results. i finally swapped out crome and installed an UBERDATA map and the problem went away with the next pass on the dyno. car made 575 whp overall on uberdata and struggled to make high 300's on crome.

I was thinking it was a problem with crome, but then a member from this forum said he had the same exact problem. he was able to fix it using resistor spark plugs. Heres some info he pointed out to me: http://www.hondata.com/techksparkplugs.html


just wondering if any of you had experience with this?

im gonna retune the car on CROME GOLD this time and see what happens. i'll buy a set of these resistor plugs as well


Modified by boosted k20 at 4:48 AM 1/17/2008

boosted k20

bump for any info

SPOOLINmatt

i used to run non resistor 9's now i get the resistor version which only comes in iridium and they are about $7.00 a piece but they seem to not break up nearly as much during tuning.

boosted k20

Matt, was that on a B/D/H series engine. on the hondata's website they only mention K series since it doesnt use spark plug wires.

SPOOLINmatt

series

JDogg

most ecu's and ignition systems require resistor type plugs.. i have never used a non resistor plug for that reason.

rorik

I don't get this at all. Seems to me the non resistor type would have a more powerful spark, less of a tendency to misfire. Amperage =voltage/resistance, cut the resistance, amperage increases with the same voltage. What am I missing? Why put a resistance in line with a spark plug? Unless you're trying to reduce rf interference, in which case can't you just use better shielded wires?

boosted k20

the point of the resistor is to reduce the interference.

from the searching i've done, i've came across a few people who have had the iridium tips fall off into their motors and destroy it. now im sketchy to even try it.


im gonna retune the car on crome Gold this time instead of crome pro to see if i still get any ignition problems. i will do the test on non-resistor plugs.

SOHC_MShue

Those iridium plugs scare me. Think about all of the heat that can build up on that sharp electrode tip . I wonder why the hell ngk doesn't make resistor plugs in the colder heat ranges that arent iridium.

boosted k20

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">Those iridium plugs scare me. Think about all of the heat that can build up on that sharp electrode tip . I wonder why the hell ngk doesn't make resistor plugs in the colder heat ranges that arent iridium. </TD></TR></TABLE>


yea, on high HP cars i can see these plugs making the motor ping like a ****.... and worst if the tip falls into the motor

if i still have ignition problems i guess i'll take Tony1's advice and get MoTec! ...... or maybe i'll stick with eCtune

SOHC_MShue

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted k20 &raquo;</TD></TR><TR><TD CLASS="quote">yea, on high HP cars i can see these plugs making the motor ping like a ****.... and worst if the tip falls into the motor

if i still have ignition problems i guess i'll take Tony1's advice and get MoTec! ...... or maybe i'll stick with eCtune </TD></TR></TABLE>
man i wish i could get ectune, but that damn tuner's license is costly. I usually tell anybody running high power cars to just go with hondata s300 or neptune.

boosted k20

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">
man i wish i could get ectune, but that damn tuner's license is costly. I usually tell anybody running high power cars to just go with hondata s300 or neptune. </TD></TR></TABLE>


yea i tried to get the dealer version of eCtune but i cant afford it. tuning is not my full time job. i only do it on the weekends. i guess it pays off for people who tune a car everyday.

SOHC_MShue

Yea i go to school and tune on the side. I cant wait until i'm out of school.

postman

s300 has the problem with using non resistor plugs. interference

0xenocron

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDogg &raquo;</TD></TR><TR><TD CLASS="quote">most ecu's and ignition systems require resistor type plugs.. i have never used a non resistor plug for that reason.</TD></TR></TABLE>

Most ECUs that require these plugs do it because its simpler to blame the plug and not take the blame for **** poor circuit board design...

sewell94

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xenocron &raquo;</TD></TR><TR><TD CLASS="quote">

Most ECUs that require these plugs do it because its simpler to blame the plug and not take the blame for **** poor circuit board design...</TD></TR></TABLE>

Turbo-charged

double post.

Turbo-charged

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by postman &raquo;</TD></TR><TR><TD CLASS="quote">s300 has the problem with using non resistor plugs. interference</TD></TR></TABLE>


i have NEVER had a problem with non-resistor plugs with S300.

Electromotive is real firm on using resistor plugs, which i used to always follow....but out of curiosity i tried non-resistor plugs and saw absolutely no difference.

tony1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xenocron &raquo;</TD></TR><TR><TD CLASS="quote">

Most ECUs that require these plugs do it because its simpler to blame the plug and not take the blame for **** poor circuit board design...</TD></TR></TABLE>

This is exactly right, the higher end ecu's take many precautions to eliminate RF noise issues. The problem isn't with the honda ecu, it's with the S300 board and the communication and logging. An S300 car will run great on non resistor plugs, you'll just loose half of your datalogs and your laptop will disconnect sometimes.

Most lower end ecus recommend resistor plugs so there's less chance of problems, but a lot of times you can get away with them w/o issues.

miller

i am with joe on this one, i have never had an issue with non-resistor plugs and any hondata unit.

JDogg

the only plugs i have ever had problems with are denso iridum, the insulator breaks off.

i have never had a problem with a broken ngk iridum plug.