AcUrALiTy

i just switched from 92 to 87 recently and i must say it feels like more power with the 87, so in conclusion doctors recommend 87 octane the cure for the common itch

ib_jimmy

ok...i switch from 93 to 87 a few month back and i felt the car is a lil sluggish, so i went back to 93. but yesterday i fill it up with 87 and it did sound like it sluggish....but i noticed a different on the freeway....it'll pull hard at high speed. like at 80mph and i'll floor it...before i know it i was at 120...it was a long drive yesterday...so i had time to test it out. 87 from now on guys.

CLpower

you are welcome

ib_jimmy

hahaha...for real tho guys...i think it help a lot running 87...take it on the highway and i'll realize it.

i just realize that yesterday was cooler here too...damn..now i dont know if its cuz the cool air or the 87.

well thanks for the tip ghander

clracer97

so 87 helps with acceleration i guess in the end 87 is better! lol but if its that much better why isnt it more expensive than 93?

CLpower

it's not a matter of what is better. Each and every car responds to octanes differently. A high compression or F/I car will need a higher octane, that's why ferrari's, and turbo cars and shit run on 91+, if they went lower they'd lose power and get knock (detonation). A high octane is completely unneccesary for our car, look at the reasons stated through this post. We simply don't need that high of octane and in fact it hurts our performance because it's to high and we can't burn it fast enough and our ECU will start messing w/ the timing etc. Now if you are running forced induction on our car you will need it. For example, when I run nitrous I have to fill up on 91+ otherwise I risk running into detenation problems, but when i'm not using it i'm on 87 all the time. I went a year or two not believing this myth and ran 91+. Until I saw it was only hurting me and not helping. For example my car w/ a few bolt ons (intake, pulleys, new spark) dynoed at 147 w/ 91, but I was also dynoing w/ nitrous so it's what I had to run. I went back a few weeks later and dynoed at 16X w/ 87. ( I wish I had the dyno's to show but, it's been lost in a few moves)


for example our navigator has the high compression 5.4L motor in it. It requires 91+. But the other motor available does not because the compression isn't high.

Same reason the type S needs it but the CL-P doesn't.

r3mix3r

very well stated

Leon

what octane is recommended for the JDM H22's?

clracer97

so just to make sure 1 last time 87 on the 3.0 unless i use nitrous or turbo right? thanx 1 last time!!!

CLpower

yep

CLpower

not sure what the factory rating is, but i'd run 91+ personally, but then again, i'd also be running high compression pistons etc.

sandroCL

I also switched from 92 to 87 due to an earlier post and I don't regret it a bit. It's cheaper, and my car goes balls to the wall from 4k to 6.5k compared to 92 octane.

clracer97

would 87 octane cause any damage to the engine anywhere else?

CLpower

no offense, but what part of any of this that's been posted do you not understand. Our cars were MADE to run on 87. That is what they are suppose to do, anything else will be where your problems will start. Sorry for being a dick

Chinisimo

i just switched to 87 yesterday. i'm do noticed that the car is somewhat smoother but i dunno if that's the gas or if that's the fuel injector cleaner that i added w/ that gas working... :P

truraysa

if i remember correcttly h22's run premium only

ding069

This is my previous experience with 87 and 92 octance. I have ALWAYS ran 92 since my purchase and car fells good. Switched to 87 for a tank after one of these thread debates and hated it. I didn't notice any power increase, and with a low fuel amount in the tank, it seems like the engine has a harder time turning over(under 1/4 tank). JB Jimmy said the car pulls harder to 120mph, but my car RARELY is driven that hard, it almost never sees 100, so i didn't perform a high end/speed test. All i know is that 92 seems to run smoother in my car, and starts better. As for Ghander bringing up the dynocharts from C&D, i am sure that they are valid, but as anyone knows, there are SOOOOO many variables that can contribute to dyno increases/decreases. Take it however you want, i don't want to recieve criticism from this post, but those are my results and my verdict on the debate. Nothing but 92 hits my tank, and i am still not swayed by this thread. Call me stuborn, but i don't like the feel of 87 in my CL.

ding069

This is my previous experience with 87 and 92 octance. I have ALWAYS ran 92 since my purchase and car fells good. Switched to 87 for a tank after one of these thread debates and hated it. I didn't notice any power increase, and with a low fuel amount in the tank, it seems like the engine has a harder time turning over(under 1/4 tank). JB Jimmy said the car pulls harder to 120mph, but my car RARELY is driven that hard, it almost never sees 100, so i didn't perform a high end/speed test. All i know is that 92 seems to run smoother in my car, and starts better. As for Ghander bringing up the dynocharts from C&D, i am sure that they are valid, but as anyone knows, there are SOOOOO many variables that can contribute to dyno increases/decreases. Take it however you want, i don't want to recieve criticism from this post, but those are my results and my verdict on the debate. Nothing but 92 hits my tank, and i am still not swayed by this thread. Call me stuborn, but i don't like the feel of 87 in my CL.

CLpower

not many varialbes to look at when you are running back to back dyno's w/ 2 different fuels. They did them all in the same day to take the chance of the different variables taking effect. The dyno isn't the only thing that makes a difference, it's the fact our cars are tuned to run 87 and not anything higher.


But hey, if you wanna run 92 (it's your car), go ahead, don't listen to any of us, we are all probably wrong

clracer97

well i'll come back to this debate after my car comes out of the shop (which is taking longer than expected!!) and then i'll tell you all what i think!