Originally Posted by NorthCyprus,Oct 24 2005, 10:09 PM

My car is JDM,

When i run EU 91, i dont know what US octane that is, i have problems, (konocking, loss of power, hesitation etc) when i run 98 i still have problems but i couldn not run 98 over and over again to see what's gonna happen yet, the station which sells 98 is far away and my work and school hours wont let me go there often. I will somehow do that and post in the other threads aswell i started.

My point is, the engine being EU, US or JDM does not matter i think. They have the same inlets, injectors, fuel rail and everything right? the point is the ECU. If you have a JDM ecu, it's programmed for Japan standards, if you have a US one, it's programmed to US standards.

So if you have a JDM engine and a US ECU, no problem, JDM engine with JDM ecu in US or EU, yes, u have a problem. If you have a JDM car in US and you can afford, go for a different brand ECU like Mugen.

Am i right?

Originally Posted by CrazyPhuD,Oct 24 2005, 11:23 AM

FYI...a local has been running a JDM engine on 91 for well more than a year. Engine runs fine.

Octane boosters are questionable at best they don't do much if anything to raise octane.

Also just to remind, make sure that if you are running a cat you only run unleaded, usually anything over 100 Octane is leaded which will eventually destroy your cat.

Around here we can get 100Oct which I've been running for 5weeks or so ever since the gas 'crisis'

Originally Posted by FO2K,Oct 24 2005, 04:43 PM

Where do you get 100 octane? I would like to find some in the Sacramento area.