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How to know the Best A/F Ratio

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Old Apr 7, 2006 | 01:20 PM
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Unhappy How to know the Best A/F Ratio

How to know the Best A/F Ratio for

231/237 TSP Cam

daimond -2 cc Piston 3.905
Calis conecting rods
patriot 59 cc Stage II
LT Headers
3'' Y pipe
Borla
SLP Air Box
373s gear ratio

What is the Best a/f ratio for 150 shot
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Old Apr 7, 2006 | 03:29 PM
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The best A/F is dependant on two things. 1) What A/F does the car run best at? and 2) What A/F are you comfortable running the car at?

A combination of those two things will be the best A/F for you particular car. Generally we try to tune car's to 11.8-12.0:1 on nitrous. However, some everyone has different thoughts on what works best and some people are more comfortable with running a car richer and leaving a little on the table as far as power goes.
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Old Apr 7, 2006 | 03:35 PM
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Originally Posted by NXJeremy
The best A/F is dependant on two things. 1) What A/F does the car run best at? and 2) What A/F are you comfortable running the car at?

A combination of those two things will be the best A/F for you particular car. Generally we try to tune car's to 11.8-12.0:1 on nitrous. However, some everyone has different thoughts on what works best and some people are more comfortable with running a car richer and leaving a little on the table as far as power goes.
i did go to the dyno jet .the A/F 14.1 and the dyno is 408rwhp&396rwqt
after tuning in dyno 11.9 A/F 389rwhp&378rwtq timing is 24*
150 wet 509rwhp&533rwtq

i did lose 20 rwho on the 11.9
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Old Apr 7, 2006 | 03:47 PM
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You gave up some power by going to 11.9, but it is far more safe to run at that a/f than to run at 14.1. Plus you can always compensate for that drop in power by adding more nitrous.
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