2K2WS6TA

iTrader: (2)

I'd like to run N2O on my 02 T/A, but the best gas we get is 91 octane, so does that have a big effect on how big a shot I can run (looking for a 100 dry)
Any recomendations on what to do to keep it from detonating (timing retard, octane boost, cooler stat, less of a shot)
Sorry for the dumb question but I really don't want to f**k this up

98redorangeta

iTrader: (10)

Well it seems you know what to do. The ruel of thumb is 2 degrees of timing for ever 50 hp of n2o. There are a lot of guys running 91 octane and spraying as long as to take timing out you will be ok if you have scanning softwear to log for kr i would do that.

2K2WS6TA

iTrader: (2)

So what timing retard device would you suggest (this is primarily for track use BTW)
No scanning software either (any suggestions on that)

CAT3

iTrader: (9)

Can you get Race Gas? If so, consider getting some 100 unleaded (103, 104 etc) and mix it in the tank. Works good.

2K2WS6TA

iTrader: (2)

Might be able to at the track, but I don't know for a fact
If I can, what would be a good mix 1/2 & 1/2 or more race less street, or the other way

Turo

iTrader: (23)

I would think that as long as its tuned properly (AFR and timing), he should have no problem with a 100 dry shot on 91 octane.

2002_B4C

I think, and a lot of others probably do too. You should be fine with 91 octane and colder plugs on a 100 shot. Anyone disagree? or agree? JMO I run a 150 wet shot on a stock motor, besides the plugs of course. Have not had any problems yet. Good luck, happy spraying.

Robert56

iTrader: (2)

I agree, and have seen it many times and have run 91 with a 100hp and more with no issues. This is with no timing pulled. Likely you will need no timing pulled until 150+hp shots. Still best to log for a/f and kr though.
Robert

CAT3

iTrader: (9)

Turo...I dont disagree at all. I've always used 92, not like a big difference from 91, but I always err'd on the side of caution. Other than burning up a few sets of plugs when I forgot to update the tuning (was running NA tune on the edge 35* 13.3:1afr kind of stuff sometimes) I have never had any mechanical issues. So, I always played it safer than sorry, and recommend it those who dont get into tuning, or are inexperienced.

Speaking of, maybe I should make that a disclaimer in my sig: "The answers I give, are my opinion of how you might want to appoach the problem, and are representative of a safe approach, good luck."