Just filled her up with the 4th tank of Sunoco Super 94 and the car is running smoother and pulling harder. If you have the means you must try it. Oh yeah, I have been averaging 29.3 MPG with the Super. Really weird, but who's complaining.. The two trips to Philadeplia may have helped. I really feel for you Cali guys with that 91 octane pee you have.
94 octane ummmmm good
- Thread starter Sloop
- Start date
scapamouche
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tell me about it! I'm rarely getting even 25 on the highway...
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Sloop,
I've been using Ultra 94 from Sunoco since day one. There are the occasional time when i put in 91/92, but to be honest with you, i don't notice the differences at all. Are you sure you notice the engine being smoother?
or is your mind just playing with you?
I've been using Ultra 94 from Sunoco since day one. There are the occasional time when i put in 91/92, but to be honest with you, i don't notice the differences at all. Are you sure you notice the engine being smoother?
or is your mind just playing with you?
I would try to get 94 all of the time... With the turbo cars its important. Especially since you have such high compression. The higher the octane is the less likely you will be to knock and pull your timing.
I've been using Ultra 94 from Sunoco since day one. There are the occasional time when i put in 91/92, but to be honest with you, i don't notice the differences at all. Are you sure you notice the engine being smoother?
or is your mind just playing with you?
You will probably notice the biggest difference when you are running it hard. I notice a difference every time I put cat piss (91 octane) in my car.
I will spend up to 30bucks on a track night just for 6 gallons of 100+octane fuel. I make my own mixture of race gas. Its too hard to find unleaded race fuel around.
Nothing goes in my car but the hightest octane i can find.
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psifactor- you are right on the octance level making it a differences in performance if you run the car HARD! This is only noticable if you're on a drag strip and you run between octance 91 VS 94. You will lose a tenth of a second or so with the higher octane. But in the real world, do we really need to beat the clock?
i'm not sure i agree with you about our car's being all that high compressed. There are cars for example like the ITR or RSX Type-S or S2k to name a few with much higher compression. Although they require premium fuel, you can infact run the car without premium fuel and not get the pinging noise. Yes, it's required but not a must.
Anyways, i put in the highest octane available anyway, so whatever. Enough of my thoughts.
i'm not sure i agree with you about our car's being all that high compressed. There are cars for example like the ITR or RSX Type-S or S2k to name a few with much higher compression. Although they require premium fuel, you can infact run the car without premium fuel and not get the pinging noise. Yes, it's required but not a must.
Anyways, i put in the highest octane available anyway, so whatever. Enough of my thoughts.
I was wondering if anyone with a boost guage has measured the psi holding all the way to redline. Since we are not boosted extremely high like other turbo cars I was wondering if the boost level declines as the RPM's go up. I think our turbo's are pretty much useless after about 6000 RPM's. They just run out of steam at the top end. If the boost holds to redline the higher the octane the less chance of detonation where at higher RPM's it is more likely to occur.
.Limited production.. I know there are cars with higher compression, but for a stock turbo car 9.1 to 1 is high. Adding a turbo puts your car in a different class than the rxs, s2000(acutally all hondas/acuras), n/a rx7 which are all have high compression. Basically turbo cars have lower compression, but the mazdaspeed does not.
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gujustud, sure it will chug or ping for some motors like bikes. But we're talking about Protege's here...
For our cars, it won't. There's actually someone on this board who put in regular fuel a few times. Can't remember who it is...
For our cars, it won't. There's actually someone on this board who put in regular fuel a few times. Can't remember who it is...
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In their MSP.
i always found that higher octane gets you less MPG
i always found that higher octane gets you less MPG
when the fuel light comes on, how many miles of driving do you think you have left? reason i am asking is because sometimes my light will come on even if i have like a quarter tank left. also, how many gallons do our tanks hold? i'm too lazy to go check the manual.
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krillin said:
Speaking of which, i dont know if u guys does this... but every morning when i back outta my garage when its like 1/4 or less tank of gas left... for some reason the needles auto drop down to almost 0 or below... then after i run it for a while... it goes back up to where its suppose to be... is that normal?
- :
- 2018 CX-5 GT
I just started using 93 (all I can get 'round here) religiously a couple weeks ago and now my baby's nice 'n smooth. I used to put that 87 horsesh*t (no stones please, still novice) in but nevair again! (no) I feel I get much better performance the higher the octane even though my fiance who's an, auto tech, and his sister say my car doesn't need it. :wtf: Need, schmeed, I'll pay the $25-30/fillup!
(blackp5)
(blackp5)
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- 03' Silverado, 03' P5
clownphish said:
Without a timing increase or signifigant mods, 87 should be fine... Hell, I get 2 to 3 MPG better with 87 vs the 93 octane, with no change in Performance whatsoever.
For the MS guys/gals, it should make a noticeable difference, but for the P5, it shouldn't matter at all.
