SR20 octane booster???

[240sxdrifted]

okay guys so i have a sr with t25..fmic..3in exhaust no cat...CAI...running 10psi with stock boost pressure sylenoid...What gas should i be running...i live in montana so there are'nt any gas stations with anything above 92...mostly just 91...Should i be putting in octane booster and if so how much with 91ocatane gas???
Anything helps but....idiots please dont chime in..

http://photos-h.ak.fbcdn.net/hphotos-ak-snc3/hs107.snc3/15440_102352523122100_100000420586216_65837_396589 3_s.jpg

[crono72000]

91 or 92 should be fine just depends on your tune.

[crono72000]

Oh and get a wide band that's the only real way to tell what's going on not matter what octane your running.

[Carbomb]

xylene
acetone
Toluene

Google them, understand why I left them their like this ,and enjoy.
Your Welcome.

[fliprayzin240sx]

Do not run octane booster...thats how you fuck shit up. 10 psi should not really kill the engine but your best bet is to have a proper tune.

[240sxdrifted]

does anyone know where i can get my car tuned without the car being there???i live in montana and there are no tuners around here... and it's a long drive...ive heard of enthalpy and shit like that but i dont want to pay a ton for a tune on a setup that i dont want to have for a llong time...3in no cat..t25..walbro 255...fpr..fmic..10psi on stock boost sylenoid...aftermarket CAI...hks atmo bov...
looking for a good tune at a low price...ive thought about mines and other japanese tunes but i heard that they run on higher octane than available

[jdm213]

does anyone know where i can get my car tuned without the car being there???i live in montana and there are no tuners around here... and it's a long drive...ive heard of enthalpy and shit like that but i dont want to pay a ton for a tune on a setup that i dont want to have for a llong time...3in no cat..t25..walbro 255...fpr..fmic..10psi on stock boost sylenoid...aftermarket CAI...hks atmo bov...
looking for a good tune at a low price...ive thought about mines and other japanese tunes but i heard that they run on higher octane than available

octane booster doesent really make your car any faster, best gas i know is shell and that all I put, but you dont need crazy octane for your setup, more octane just burns a lil quicker but it will still run on 91 with proper tune:wackit:

[j87w]

looking for a good tune at a low price


95% of the time those words dont go together. To get a good tune someone is going to have to spend a good amount of time with your ECU. Alot of time from a good tuner will not cheap. Dont cheap out on engine management. It will make or break your setup. Enthalpy is super fast turnaround and isnt that expensive considering what your spending it on. Spend the money and do it right the first time.

[j87w]

more octane just burns a lil quicker but it will still run on 91 with proper tune:wackit:

Higher octane levels make for a SLOWER burn! Not the greatest link but you can read some facts here. http://www.state.mn.us/mn/externalDocs/Commerce/Gasoline_Octane_Facts_102902052227_OctaneFacts.pdf

[D.Adams]

i run allmost the same set up and i run 91 with no issue. sometime ill put in the Lucas octane booster just to clean things up. with 91 im getting 24-26mpg on a mild ECU tune done by Intec

[jdm213]

Higher octane levels make for a SLOWER burn! Not the greatest link but you can read some facts here. http://www.state.mn.us/mn/externalDocs/Commerce/Gasoline_Octane_Facts_102902052227_OctaneFacts.pdf
octane burns faster like 91 has more octane than 89 off course adding more is like making it 93. more fuel being burnt means its going faster to do so:blah:

[S14DB]

Octane rating - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Octane_rating)
Effects of octane rating


Higher octane ratings correlate to higher activation energies. Activation energy is the amount of energy necessary to start a chemical reaction. Since higher octane fuels have higher activation energies, it is less likely that a given compression will cause autoignition.

It might seem odd that fuels with higher octane ratings are used in more powerful engines, since such fuels ignite less easily. However, an uncontrolled ignition is not desired in an internal combustion engine. The fuel must be fired at a precise time. An ignition too early will cause the resulting forces to try to turn the crankshaft in the reverse direction. This will not cause the engine to rotate in the reverse direction because of the kinetic energy in the rotating assemblies and the flywheel, but will strain the crankshaft. This strain is the source of the characteristic 'ping' noise heard during detonation. This reduces power output, because much of the energy is absorbed as strain and heat in parts of the engine, rather than being converted to torque at the crankshaft.

A fuel with a higher octane rating can be run at a higher compression ratio without causing detonation. Compression is directly related to power (see engine tuning), so engines that require higher octane usually deliver more motive power. Engine power is a function of the fuel, as well as the engine design, and is related to octane rating of the fuel. Power is limited by the maximum amount of fuel-air mixture that can be forced into the combustion chamber. When the throttle is partially open, only a small fraction of the total available power is produced because the manifold is operating at pressures far below atmospheric. In this case, the octane requirement is far lower than when the throttle is opened fully and the manifold pressure increases to atmospheric pressure, or higher in the case of supercharged or turbocharged engines.

Many high-performance engines are designed to operate with a high maximum compression, and thus demand high-octane premium gasoline. A common misconception is that power output or fuel mileage can be improved by burning higher octane fuel than a particular engine was designed for. The power output of an engine depends in part on the energy density of its fuel, but similar fuels with different octane ratings have similar density. Since switching to a higher octane fuel does not add any more hydrocarbon content or oxygen, the engine cannot produce more power.

However, burning fuel with a lower octane rating than required by the engine often reduces power output and efficiency one way or another. If the engine begins to detonate (knock), that reduces power and efficiency for the reasons stated above. Many modern car engines feature a knock sensor – a small piezoelectric microphone which detects knock, and then sends a signal to the engine control unit to retard the ignition timing. Retarding the ignition timing reduces the tendency to detonate, but also reduces power output and fuel efficiency.

[teamsprock]

I'm in Montana and my brother has a Mine's ECU on his SR, I would say stick with the stock tune for now. When its time go Enthalpy tune. I make 460hp on my Enthalpy tune and have beat on it for almost 6 years that way now with no problem. If you end up wanting some higher octane fuel let me know. I am a Torco distributor and I can get you either 100 or 108 uneaded or if you just want a small bump I have Concentrate race gas that is made so if you mix 1 can in with your 91 you will have 95 octane. Runs about $20 a can. I'm not trying to sell this stuff online just have a few cans left that I bought to let locals see what they think. AMS and Cobb both have reveiws on it and say it works great. Anayways if you have SR questions feel free to get ahold of me I'm sure i can help you out.

[240sxdrifted]

thanks everyone for the input on octane booster...learned more than i expected