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Old 06-18-2001, 07:48 PM   #1
WRSport
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Member#: 2060
Join Date: Aug 2000
Chapter/Region: BAIC
Location: Bay Area
Vehicle:
00 2.5RS Coupe
01 black boxster hardtop

Talking New Spark Plugs = New Car, no hesitation

I have had hesitation problems on my 2000 2.5RS for the last 15,000 miles. I bought Bosch +4 platinums two months ago but there was a problem reported by one user of these plugs and I never installed until now. So two tanks of gas ago I did an ECU reset and hesitation returned once again as usual after a couple hundred miles of driving.

So I put in the Bosch +4's over the weekend, NO ECU reset, and man I have a new CAR. I would have paid $1000 to make this problem go away and BABY ITS GONE !!!

Maybe I have had bad champion plugs all along or something but I can't believe how nice it is to have an 2.5Rs that runs this perfect now. Idle, perfect steady 500rpm, smooth acceleration in every gear no matter what rpm. This car is nothing like it was with those champions, no comparison, no debate, zip, nada, zero.

If you have any hesitation, Replace your plugs with anything other than the champions and Im sure you will be as happy as I am right now. Honestly I cant believe that only changing the plugs could transform my ride into what is now. I can not express how much I hated the hesitation at 3000-4000 rpm, to the point that I thought I was going to have to do the cobb cams to make this car pull smoothly. Jc Intake and new plugs and I'm one happy camper for now. Smooth sail all the way to redline, ILL TAKE IT!

Cheers,

Chris Brunell
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Old 06-19-2001, 01:16 AM   #2
zzyzx
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Member#: 815
Join Date: Jan 2000
Location: Florida
Vehicle:
2013 Boss 302 White
2000 2.5 RS Coupe Silver

Thumbs up

Alright, you convinced me. As another MY00 owner with the same recurring hesitation issue, I'm pulling those plugs ASAP and putting in some copper NGKs. I hope you are right and it helps my car out as much as it did yours.

- Steve
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Old 06-19-2001, 01:35 AM   #3
WRSport
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Member#: 2060
Join Date: Aug 2000
Chapter/Region: BAIC
Location: Bay Area
Vehicle:
00 2.5RS Coupe
01 black boxster hardtop

Cool

Just went for another 53 mile drive and all i can say is get those $ .07 lawnmower spark plugs out of your 2.5RS. Maybe i had a bad plugs(they all looked a healthy? medium tan) + 15,000 miles but I had the same dreaded hesitation everyone has had at one time or the other and its GONE. I feel like a just bought a new car.

For the record.

- MY 2000 2.5RS
- Stock other than JC Intake.
- 15,020 miles on stock champions.
- Allways had the hesistation at 3-4K for all 15,000 miles basically.
- Most noticeable on 1st gear.
- ECU re-sets have always made the car more fun, for a while but would slowly come back.
-Still have yet to take in for letter about o2 sensor.

- Hesitation is gone!
- Bosch +4 plugs Part Number #4417

- Yes, just for you BIGELM part number #4417.
-BigELM, my guess is you had a bad plug from bosch, or mislabeled part numbers? IE colder plug....I dont know,whatever, they are working for other members and are working just fine and dandy for me. Thanks for your help a month or two ago though.

Cheers,

Chris Brunell

Last edited by WRSport; 06-19-2001 at 01:44 AM.
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Old 06-19-2001, 09:49 AM   #4
inpreza kid
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Location: Calgary, Alberta, Canada
Default

i just replaced my plugs with some bosch +4's last week. all i really noticed was the engine ran a little smoother.
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Old 06-19-2001, 04:58 PM   #5
Boom
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Chapter/Region: NESIC
Location: Harwinton, Ct
Vehicle:
04 STi
like theres a choice BLUE

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Yeah same here, I went with the Bosch Platinum plugs right off, and the car runs great. I would recommend them to everyone who owns a car
Steve
99 White RS
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Old 06-19-2001, 06:28 PM   #6
ELUSIVE
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Member#: 5829
Join Date: Apr 2001
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I installed the Bosch Platinum +4 Plugs with a set of the Magnacor KV85 Spark Plug wires and my car ran much smoother.

I'm very happy with the upgrade.

Stacey
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Old 06-19-2001, 08:12 PM   #7
Keith/BlackRS
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I have to agree about the Champion plugs. I have heard no good things about them from anyone who owns an RS. I have seen that NGK work pretty well too. I have my coices narrowed down to the Bosch or NGK's. Thanks for all the info on the Bosch!!!!
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Old 06-19-2001, 10:31 PM   #8
BongMan
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Member#: 2399
Join Date: Sep 2000
Location: fremont, in the bay man
Vehicle:
2001 Impreza RS
Blue

Cool

i have the NGK's on my car. i replaced the old Champions and they seemed ok, but the NGK's rock. Rev's happier, and better mileage. What more could i ask for? Maybe if they started with them stock on the car, but they're much better.

so everyone get thouse NGK's or bosch. Champions suck!
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Old 06-19-2001, 10:42 PM   #9
WRSport
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Join Date: Aug 2000
Chapter/Region: BAIC
Location: Bay Area
Vehicle:
00 2.5RS Coupe
01 black boxster hardtop

Default

Im not saying its the Bosch +4's, I would buy NGK's if i had to do it again. Maybe my champions had a real problem, must have been the case. I cant belive my car could have been this fast and smooth the whole time had i changed the plugs.
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Old 06-20-2001, 01:11 PM   #10
Jason
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Join Date: Jul 1999
Location: Fremont, CA 94538
Vehicle:
2000 Legacy GT Ltd
WHT

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IMO, spark plugs start to lose performance as it pass the 15K mi mark. I usually change them every 15K regardless of brand and material. Honestly, I don't like Platium plugs. As you know, platium is a poor conductor. It's on the plug to keep it last longer and not makign more power.
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