trini-gsr

there's a serious gas shortage here in the south and today i had to put 87 octane gas in the teg, cuz there's hardly any gas anywhere, much less premium...

it's boosted and tuned on 93 octane...like most ppl here i assume. anyone ever run 87? should i get some octane booster or something? i've been driving like a granny and staying out of boost so far. no CELs or anything as yet.

boosted k20

u will be fine. just dont hit ANY boost

trini-gsr

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted k20 &raquo;</TD></TR><TR><TD CLASS="quote">u will be fine. just dont hit ANY boost</TD></TR></TABLE>

that's kinda what i figured...just wanted to doublecheck. thx!

mrbsponge

yeah you can drive on it, as im sure your low cam tables are pretty much normal. but i wouldnt boost it, i have personally seen 2 motor failures from the saem thing. both of them were females driving thier boyfriends/husbands cars and didnt realize the difference.


i bet they know now

Supacharge

just a thought, but with this gas shortage, do you guys imagine you'd see any octane cut backs? for example, you go out to buy 93 octane @ the local station, but because of the shortage and fuel companies screwing everyone, you pay for 93 octane but what you get is only 89. this could pose a problem for those guys who are on the verge of needing higher octane gas. you guys see my point? just wondering if this happens or may happen...and cause some unsuspecting engine failures.

RC000E

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Supacharge &raquo;</TD></TR><TR><TD CLASS="quote">just a thought, but with this gas shortage, do you guys imagine you'd see any octane cut backs? for example, you go out to buy 93 octane @ the local station, but because of the shortage and fuel companies screwing everyone, you pay for 93 octane but what you get is only 89. this could pose a problem for those guys who are on the verge of needing higher octane gas. you guys see my point? just wondering if this happens or may happen...and cause some unsuspecting engine failures.</TD></TR></TABLE>

Doing anything of that nature would certainly ensure a lawsuit. A large number of vehicles are high octane dependent, so I don't think it'd be long with the issue going unnoticed.

All gas stations are regulated by state standards, and generally there is a gas quality gaurantee. In addition, gas stations are filled by the actual company that provides fuel to those stations, not by the stations owner.

Anything like this would be HIGHLY unlikely to occur. Possible by accident, but not otherwise.

rorik

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Supacharge &raquo;</TD></TR><TR><TD CLASS="quote">just a thought, but with this gas shortage, do you guys imagine you'd see any octane cut backs? for example, you go out to buy 93 octane @ the local station, but because of the shortage and fuel companies screwing everyone, you pay for 93 octane but what you get is only 89. </TD></TR></TABLE>

I'd figure the lower octanes would sell out first..most cars don't need 93..
But do I see you getting 93 instead of 87/89, no..

EASY101

This is probably a dumb question but isnt there a knock sensor that would cause the ecu to retard the timing before damage occurred in the event that the octane was too low? I read an article that stated that atleast the newer vehicles that come from the factory with a recommendation for premium fuel were safe from low octane fuel and that they would only suffer some lack of performance because of the ecu's ability to comtrol the timing via the knock sensor.

2point2

I filled up with 91 all the time when going on long trips. 94 to 91 made a huge difference on my 10.6:1 engine.. I learned in a hurry not to push the turbo button with lower octane.

Supacharge

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EASY101 &raquo;</TD></TR><TR><TD CLASS="quote">This is probably a dumb question but isnt there a knock sensor that would cause the ecu to retard the timing before damage occurred in the event that the octane was too low? I read an article that stated that atleast the newer vehicles that come from the factory with a recommendation for premium fuel were safe from low octane fuel and that they would only suffer some lack of performance because of the ecu's ability to comtrol the timing via the knock sensor. </TD></TR></TABLE>

you've got to have a knock sensor on your car for a knock sensor to detect knock. not all cars have them

LastGenEK

Most boosted car running aftermarket pistons, rods, cams, diable knock sensor....
I know if i turn knock sensor ON (IN MY CAR gsr S300) it detects knock so i leave it OFF


Modified by LastGenEK at 2:33 PM 9/23/2008

blinx9900

efff you guys! im in cali and we have 91 only seriously though OP if this is going to be a reocurring problem i suggest you have your car tuned for 87 octane and have a switch to be able to switch between the two maps if your forced to use 87. This is pretty common with street cars that drag a lot, high boost low boost maps, but you can have a 87 and a 93 octane map

trini-gsr

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blinx9900 &raquo;</TD></TR><TR><TD CLASS="quote">efff you guys! im in cali and we have 91 only seriously though OP if this is going to be a reocurring problem i suggest you have your car tuned for 87 octane and have a switch to be able to switch between the two maps if your forced to use 87. This is pretty common with street cars that drag a lot, high boost low boost maps, but you can have a 87 and a 93 octane map </TD></TR></TABLE>

well i think it's only temporary, because of shortages due to the last hurricane that hit the gulf and what not. it's been boosted for over 3 yrs and this is the 1st time i've used 87 octane. the lines to get gas out here are ridiculous right now bc so many stations are out, and all they've had available for the most part is 87...

if this becomes a trend then yeah...i'll get the car retuned on 87. hopefully it won't come to that though. thx to everyone for the input