NovaResource
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| Re: Vibe GT and octane (Kurt V) | « » 11:46 AM 2/3/2003 |
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Yes, you can run lower octane without damaging the engine. The computer will compensate but you will lose some power. Just don't "hop on it". And get some 91 octane (or higher) in it as soon as you can.
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NovaResource
GenVibe God
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| Re: Vibe GT and octane (AtWork) | « » 1:59 PM 2/3/2003 |
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That's correct, you aren't getting optimal performance. It seems strange to me to pay extra for the GT model but then not pay a little more for premium fuel to get the extra performance out of the GT engine. If fuel cost is a concern why not save a few more bucks and purchase a base Vibe?
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DABEAR95
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MI
Joined 1-23-2003
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| Re: Vibe GT and octane (NovaResource) | « » 8:27 PM 2/3/2003 |
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Your right Nova. I based my decision on the fact that the initial purchase price was within my limits, and around here it works out to an extra 2.50 per tank for an extra 40+ HP.Jason
2003 Vibe GT Lava w/accent + 17'' wheels
2002 VW Golf TDI 43City/52Highway lifetime
1995 Camaro Z28 CAI,!TB,Airfoil,Shorty Headers,
!CAT,Borla exhaust, 3.73's w/eaton posi.
13.5@105 with 245/50/16 Michelin XGT's = no traction
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Herb
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Calgary AB
Joined 1-12-2003
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| Re: Vibe GT and octane (Kurt V) | « » 10:15 PM 2/3/2003 |
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I've seen some octane boost bottles that you can buy at automotive stores. Just dump in a bottle before filling up with regular unleaded.
Would you agree to debris acceptance?  2003 Vibe GT
Mods installed
GM Top and Mid-Gate Spoilers, Cosmo CAI, TWM Short Shifter with Desert Eagle weighted shift knob, TWM Bronzoil Shifter Cable Bushings, Magnaflow Cat Back Exhaust, Unichip, Injen Billet Aluminum Engine/Sparkplug covers and oil cap, Optima RedTop Battery, Lineage Ground Wire Kit
Awaiting install:
Energy Suspension Motor Mounts, DC Sports Header
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silverawd26
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SE MI
Joined 12-28-2002
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| Re: Vibe GT and octane (Herb) | « » 12:50 AM 2/4/2003 |
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the octane boost is a decent thing to do, but actually it ends up being cheaper to just put 92 octane in. Remeber the rule of thumb, you can always put higher octane in and it wont hurt the engine, back you can not go lower than specified, it can cause hard knocking.
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DABEAR95
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MI
Joined 1-23-2003
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| Re: Vibe GT and octane (silverawd26) | « » 8:34 AM 2/4/2003 |
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The octane boost that says it boost 4 points is a bit misleading. If the octane it 87, it will bosst it 4 points to 87.4.
Jason
2003 Vibe GT Lava w/accent + 17'' wheels
2002 VW Golf TDI 43City/52Highway lifetime
1995 Camaro Z28 CAI,!TB,Airfoil,Shorty Headers,
!CAT,Borla exhaust, 3.73's w/eaton posi.
13.5@105 with 245/50/16 Michelin XGT's = no traction
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NovaResource
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| Re: Vibe GT and octane (AtWork) | « » 9:40 AM 2/4/2003 |
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DABEAR95 is correct. The "points" octane boost claims are the "tenths" on the right side of the decimal point.
quote:
If I fill up with premium next time I have an empty tank will I notice a difference when I drive?
You might but it depends on how you drive now. If you drive it easy you probably won't but it you like to rev it to the redline, you probably will feel a difference.
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NovaResource
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| Re: Vibe GT and octane (AtWork) | « » 4:27 PM 2/4/2003 |
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Only to the 5000's?! Why did you buy a GT then? A base Vibe would have cost you less. The GT redlines at 8200 the base at 6400. Wind that puppy up! Wait 'till you feel the acceleration above 6000 rpm.Don't worry, hitting the fuel cutoff won't feel like hitting a wall. It's just stops acceleration but it doesn't really slow.
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DABEAR95
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MI
Joined 1-23-2003
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| Re: Vibe GT and octane (NovaResource) | « » 6:11 PM 2/4/2003 |
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Yeah, it’s not too bad hitting the rev limiter. Yesterday I decided to get on it for the first time all the way(break-in) and what do ya know, I screwed the shift and bounced of the limiter. No biggie, that’s what it is there for. The factory provides this so you do not damage the engine. Although if your doing 80 and shove it in 1st, the rev limiter won't help you. It only prevents it from revving higher as you accelerate in a gear.
2003 Vibe GT Lava w/accent + 17'' wheels
2002 VW Golf TDI 43City/52Highway lifetime
1995 Camaro Z28 CAI,!TB,Airfoil,Shorty Headers,
!CAT,Borla exhaust, 3.73's w/eaton posi.
13.5@105 with 245/50/16 Michelin XGT's = no traction
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Lorin
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Harrisburg PA
Joined 1-21-2003
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| Re: Vibe GT and octane (DABEAR95) | « » 6:42 PM 2/4/2003 |
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My turbo Eclipse required premium too. I ran some comparison tests, and the loss in fuel economy with 87 Octane erased any savings from buying cheaper fuel. No cost savings and loss of performance meant a bad deal all the way around.
Lorin
2003 Pontiac Vibe GT, Neptune-mono, moons & tunes, power package, side impact airbags, rear seat covers, bumper protector, cargo mat.
Mods installed: TRD exhaust, TRD stb,
Mods removed: TRD CAI - annoyed by CEL
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DABEAR95
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MI
Joined 1-23-2003
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| Re: Vibe GT and octane (Lorin) | « » 6:46 PM 2/4/2003 |
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I also had an Eclipse turbo. 99 GS-T Spyder. I filled at the same station every time I got gas. One time I had to get gas somewhere else and the premium nozzle was on the other end of the pump. I ended up filling with regular on accident. The difference in that car was dramatic. At that time I only had a CAI and couldn’t believe what the regular fuel did to the performance.
2003 Vibe GT Lava w/accent + 17'' wheels
2002 VW Golf TDI 43City/52Highway lifetime
1995 Camaro Z28 CAI,!TB,Airfoil,Shorty Headers,
!CAT,Borla exhaust, 3.73's w/eaton posi.
13.5@105 with 245/50/16 Michelin XGT's = no traction
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TRICKEDVIBEGT
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| Re: Vibe GT and octane (Kurt V) | « » 7:15 PM 2/5/2003 |
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just stick with premium cause regular slows the acceleration. i know i have tried both.
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millster
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MT
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| Re: Vibe GT and octane (AtWork) | « » 8:19 PM 2/5/2003 |
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AtWork,Best place to shift the GT is at the redline. Run it to 8200 and shift. Don't be afraid of it, it's a little dramatic at high RPM, but it's rev-limited so you can't go too far. Just wait, when that thing hits 6000, it's pretty cool. You'll be hooked! 
-Millster-
Genvibe Global Moderator
1986 Ford Ranger XLT
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Cubanpete
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Montreal QC
Joined 11-3-2002
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| Re: Vibe GT and octane (millster) | « » 11:02 PM 2/5/2003 |
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Everytime I drive mine in the city.....even on the Highway and my distances are short...I can feel the GT engine waiting to get redlined.....it has good pep........ I love it,
I can't wait when the ice-snow is gone, and I put the 17" tires back on!
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DABEAR95
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MI
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| Re: Vibe GT and octane (Cubanpete) | « » 9:11 AM 2/6/2003 |
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Same here, my black wheels and snow tires along with the 20 degree weather aren't cuttin it!Jason
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jackospades
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Warren MI
Joined 10-28-2002
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| Re: Vibe GT and octane (DABEAR95) | « » 4:56 PM 2/6/2003 |
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When I drive here in Detroit Metro Area I try to punch it as much as possible. Especially merging on the hi-ways around here. But I have found out the GT loves high Octane gas. I feed her it all the time with the way I drive.
Still running smooth....... in 6th gear.
Check out newly formed car club http://www.mtekmotorsport.com
Oh yeah don't forget my lil' site http://www.geocities.com/jackospades1975
War Damn Eagle!!!!
Go Tigers!!!!
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Keely
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Calgary AB
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| Re: Vibe GT and octane (AtWork) | « » 6:31 PM 2/6/2003 |
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AtWork, I assume you have the base 16" wheels? I have the GT with the 17" Dunlops and haven't had any problems whatsoever on dry or wet roads - just in the snow.
 keely dunn | cardomain listing
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silverawd26
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SE MI
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| Re: Vibe GT and octane (Keely) | « » 6:33 PM 2/6/2003 |
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Believe her, she is from Canada and they have furious winters.
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Keely
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Calgary AB
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| Re: Vibe GT and octane (AtWork) | « » 11:31 AM 2/7/2003 |
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AtWork, keep in mind that it seems like the tire size is a delicate balance. There's been a lot of discussion in the Tires forum about snow tires - good reading for newbies like you and I - and the crucial difference that the width of the tires makes for snow driving. I SHOULD have a set of snow tires on because the high-performance 17" Dunlops are too wide to grip in the snow well (you just slide over the top, as best as I can explain it). Our winter's been one where a big dump of snow will melt within a day or two on the roads anyway, and I've been loathe to give up the better handling I get with the 17"ers on the wet (not snowy) and dry pavement. (We don't do salt in Calgary, just a lot of gravel.)Like you, I'm new to driving a manual transmission and I'm having way too much fun.
keely dunn | cardomain listing
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