do supras need premium gas???

[IJ.]

Ok that was a bit better

Define "long time" 30 minutes? 3 hours?

Also "bogs out"???

Is it blowing any smoke you can see when it does this "bogs out" thing?

 

[All_star]

ill say about nd hour of driving but no smoke doesnt come out feels like it want ot turn off the whole engine is rebuilt i upgraded the piping to 2 and half nd i put in a kone filter should i change my injectors to 550cc

 

[7MGTEsup]

^^^^ Have you checked for any engine codes??

 

[Figit090]

Running higher octane WILL cost you power if the car isn't tuned to make use of it.

That line was enough to make me stop reading the rest of the thread. I'll look over it just to see and not miss things but, anyway...

I run 87 without problems in my n/a. it's stock (duh?) and i've tried 89 and 91, no really apparent differences. i wanted to think 'premium' was helpin but i don't really know, and doubt it did. dont know what my timing is, i need to check it actually....it was fine last i checked though.

 

[Poodles]

Premium gasolines USED to have more cleaning additives as well, but these days even the regular has the same amount...

 

[Orion ZyGarian]

Premium gasolines USED to have more cleaning additives as well, but these days even the regular has the same amount...

Well they all have the 10% ethanol; that stuff is pretty caustic, so I could see why.

 

[ILikeCarsYesIDo]

I use premium.

 

[All_star]

naaa i havent check for codes yet

 

[ms07s]

naaa i havent check for codes yet

Takes 30 seconds and saves you hours.

 

[All_star]

Takes 30 seconds and saves you hours.

how dew i check from them ???? i want ot get ride of this problem fast it sucks when i wanna run them agaisnt other cars

 

[CaptMKIII]

Does the owners manual say what to run? I haven't had my Supra but for 2 weeks now and I don't really know what to put in it. Filled half the tank with mid and it seems to run fine, but if the owners manual says to use prem. then I want to run prem.

 

[Figit090]

Does the owners manual say what to run? I haven't had my Supra but for 2 weeks now and I don't really know what to put in it. Filled half the tank with mid and it seems to run fine, but if the owners manual says to use prem. then I want to run prem.

I THOUGHT my owners manual (N/A supra) said premium, but it actually said not to run premium and I just read it wrong.

Dunno about turbo owners manuals. Unless they're the same?

hmmmm

 

[got_boosted]

I don't see the big deal about a $2 difference on a fill up between gas choices.

EXACTLY!! :3d_frown:

My N/A ran great on 87. I'll never run less than premium in my turbo. I wish I had 93 pump gas here in CA because if I did, I'd still spend the extra penny(s).

Collin

 

[Poodles]

Back of my 89 turbo owner's manual:

Fuel: Use only UNLEADED fuel, Research Octane No. 91 (Octane Rating 87) or higher. For improved vehicle performance, the use of Premium unleaded gasoline with a Research Octane No. of 96 (Octane Rating 91) or higher is recommended.



(The bold parts are bold because they're bold on the back of my manual)

 

[TooRandom]

I've used regular petrol at shells gas stations only and never had a problem. Btw i drive a 86.5 turbo.

 

[WhtMa71]

I run 93 in my Turbo. I also dont have an EGR system though.

 

[Orion ZyGarian]

I run 93 in my Turbo. I also dont have an EGR system though.

Why would an EGR system affect octane necessity?

 

[supraguru05]

Why would an EGR system affect octane necessity?

egr is a knock deterent in that it dilutes the oxygen fraction in the combustion chamber

now that i think about that that feature just slows the flame rate but i know it gives some more buffer room before autoignition.

 

[Orion ZyGarian]

EGR doesnt work under boost though, only regular driving with minimal load.

 

[jetjock]

You need to get out more. Florida may be flat but a lot of the country isn't...