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Tunning W/O Dyno?

Old 12-05-2004, 05:40 PM
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Default Tunning W/O Dyno?

i have a scope in a shop that can read a/f ratios from the exhaust but i don't know how accurate it is since it is attatched the the end of the muffler, can this work if i don't run a cat and straight through to the muffler?

And obviously this won't be on a dyno can it still be tuned by RPM? is it 12.5:1 during full boost my turbo puts or when turbo kicks in? WOT?

I'm running SAFC2 with DSM 450's on T3 chrylser(5.5-6PSI) turbo D15b7.
topspeed is offline  
Old 12-05-2004, 07:56 PM
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Default Re:Tunning W/O Dyno?

How would you put load on the car? You can't just spin the tires in the air.
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Old 12-05-2004, 10:18 PM
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Default Re:Tunning W/O Dyno?

If the O-scope is mobile you should be fine as long as the sensor in the tail pipe is a wideband sensor and street tuning.

Remember that it takes those gases a brief moment to get all the way to the end of the tail pipe...it will lag behind your RPM and MAP sensors.
Chris Harris is offline  
Old 12-07-2004, 01:44 PM
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Default Re:Tunning W/O Dyno?

Datalog with a wideband while you drive. Then tune to your A/F
BigJ is offline  
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