best nitrous a/r

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Jan 2, 2007 | 08:43 PM

cjg454ss

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best nitrous a/r

what are you guys running for a/r on nitrous? 175 shots and up. thanks

Jan 2, 2007 | 09:08 PM

Frost

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Quote:

Originally Posted by cjg454ss

what are you guys running for a/r on nitrous? 175 shots and up. thanks

I honestly don't know what others are doing, but I just did one today that was a 175 FW equiv hit on a stock bottom end and I'm keeping him at about 11.4:1-11.8:1 with a timing map made just for the bottle that is pulling about 5-6degress down low moving up to about -3 degrees up top. Tuned on the street

Jan 2, 2007 | 09:28 PM

Ole1830

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I run 11.8-12.0 NA and about 11.4-11.6 on the bottle.

Jan 3, 2007 | 05:03 PM

cjg454ss

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yeah what i found was that the jets in the nos wet kit are spot on for a/r. though i run 12.7 na nitrous was 12.5s with the 175 jetting. i went 2 steps richer and it went 10.5s. so the way i see it and have tested it was that the jets recommended plus 1 richer on the fuel will drop your na a/r down one full point.

Jan 3, 2007 | 07:32 PM

FloydSummerOf68

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Not all cars are going to require the same setting...get it on a dyno, watch the scan, and see where it needs to be. That's the only way to be sure.

Jan 5, 2007 | 11:11 AM

cjg454ss

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dynos give false reading. there is more load on a vehicle while it is driving. a dyno tune is good, a track tune is better.

Jan 5, 2007 | 11:39 AM

dynocar

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Quote:

Originally Posted by cjg454ss

dynos give false reading. there is more load on a vehicle while it is driving. a dyno tune is good, a track tune is better.

BS ALERT!!! Many chassis dynos, those that can accurately simulate a specific vehicle's load, are excellant tools for getting a safe nitrous tune on. With them, it is much easier to monitor if it is going lean, fuel pressure losses, detonation, etc for a quick shutdown before damaging something. A high percentage of new nitrous installs tested on our dyno could not pass a full run without serious problems detected. If it were me, I would test a new nitrous installation on a real dyno with a good operator before hitting it on the street or the track.