[ZM2]

Since the N55 is octane limited on most tunes, does adding booster always increase performance or are the tunes set for specific octane levels?

For instance, if a tune is set to run on 93 will the tune adjust and add power if you add booster, or does adding booster just prevent detonation?

If more power, what’s the best bang for buck booster out there? Any ill effects from using it all the time?

[Orange fever]

With Octane Booster you will see a 10-20hps more... it would adapt to whatever ECU or
Tune you have.

[NO_USER_]

I run crappy California jet fuel 91 octane, so I tried 91 + 3 gallons of VP Racing 101 (100 Octane race gas). Then tried a Stage 2 93 Octane BM3 map, I see some timing pull but not sure if it's octane related just yet will have others review after the following:

I purchased a bottle of BOOSTane octane booster, the professional version. $30/bottle, I have a code for a little discount PM me to get it off of their website.

I've done a lot of research on octane boosters, no doubt they work! Terry at BMS has used it, Norcalmav23 has like 15,000 miles of use on every tank with his FBO + PS2 M2, he's also in California so he has crappy 91 octane too. My only concerns are the effects of MMT. But I think I am comfortable enough to give it a shot. So soon I hope, I will throw some 91 octane in the tank + a bottle of BOOSTane and will do some logs with a BM3 Stage 2 93 Octane OTS map. Lets see how it does, if it works good...then I will proceed to do a custom 93 octane tune using octane booster.

I hear the side effects are orange residue on the exhaust tips. If you have a catalytic converter still, it might clog it? My main concern is Spark Plugs and O2 sensors as the by product of MMT after combustion leaves a orange residue on everything. Is it bad? I do not know. BOOSTane says MMT is similar to lead in a sense where it acts as a lubricant. ALSO, BOOSTane has something special about it that keeps the MMT in suspension at all times (check out the youtube videos). They claim due to this, you won't have fouled spark plugs and overly orange coated parts. Why, because with other octane boosters apparently the MMT settles and then large quantities are being flown through your fuel system which causes it to have massive amounts of build up = fouled plugs.

That makes sense. Norcalmav23 is living proof that there are no ill effects other than orange residue. I don't believe he replaced his spark plugs either yet.

I've tested this myself, I have purchased BOOSTane before I got my M2 and purchased another brand of octane booster called RACE GAS Concentrate (probably similar to Torco). I poured both into separate glasses and let it sit outside all day. MMT is light sensitive so it turns a different color. BOOSTane turned brown as expected but the ENTIRE solution was brown, RACE GAS Concentrate turned brown BUT everything settled at the bottom (just like the youtube videos). So there's that too.

I know the name brand octane boosters such as BOOSTane and Torco, 100% work to raise octane! Not sure if I believe their mixing charts however, it says 1 can of booster with 13.7 gallon tank of 91 octane = 101 or 102 octane LOL. Hmmm IDK about that, I'd say maybe about 96ish+ octane (seen some test results of Torco on another forum).

That'll be the whole can, but I believe norcalmav23 uses half? Or maybe more, not sure and he's on a custom 93 octane tune!

So I hope to have some results soon regarding Stage 2 93 Octane OTS of 91+100 octane VS 91+Octane Booster (BOOSTane).

I think you can always benefit from a little extra octane with any tune, of course it'll eventually max out and just provide the best knock protection.

Hope this helps!

[ZM2]

Reviving this thread, for tuned cars running close to 400-whp, does octane booster help mitigate HPFP crashing? Or, no impact? Or, make things worse?

For instance, would adding some booster or race gas help keep the HPFP from crashing on track days?

[horsepower_and_hounds]

Don't think it will help your HPFP...... I never saw a change in pressure delta between target and actual. What it helped with was timing pull until my IAT got way too high

[cookiesowns]

Originally Posted by ZM2

Reviving this thread, for tuned cars running close to 400-whp, does octane booster help mitigate HPFP crashing? Or, no impact? Or, make things worse?

For instance, would adding some booster or race gas help keep the HPFP from crashing on track days?

It won't help mitigate HPFP crashing at all. It would however help prevent knock due to higher than normal EGT, and IAT's.

however.. if your car is knocking quite a bit and DME is falling into a different (richer) fuel mode, and octane booster allows you to skip that threshold... then yes, it will help prevent HPFP from crashing.

The limit of the stock HPFP on 91/93 is roughly 400-420whp in general. ( again super generalized figure )

[horsepower_and_hounds]

Originally Posted by cookiesowns

It won't help mitigate HPFP crashing at all. It would however help prevent knock due to higher than normal EGT, and IAT's.

however.. if your car is knocking quite a bit and DME is falling into a different (richer) fuel mode, and octane booster allows you to skip that threshold... then yes, it will help prevent HPFP from crashing.

The limit of the stock HPFP on 91/93 is roughly 400-420whp in general. ( again super generalized figure )

Thanks C

[M-Supra]

Originally Posted by ZM2

Since the N55 is octane limited on most tunes, does adding booster always increase performance or are the tunes set for specific octane levels?

For instance, if a tune is set to run on 93 will the tune adjust and add power if you add booster, or does adding booster just prevent detonation?

If more power, what’s the best bang for buck booster out there? Any ill effects from using it all the time?

Torco + 93 + BM3 Stage 2 Race Gas Tune

http://f87.bimmerpost.com/forums/sho....php?t=1506904