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what tires should i dyno with?

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Old 08-21-2004, 10:24 PM
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Default what tires should i dyno with?

slicks or street tires? I'm thinking street for less rolling resistance
Old 08-22-2004, 01:11 AM
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street tires if you want to see the bigger numbers.

by the way i redyno'd my car and i know you were interested in a catback to 3" duals comparison. previous i made 429rwhp w/ a magnaflow catback now i added 4:10's in the stock rear, bfg drag radials and a dual 3" with magnaflow 4x9 mufflers with tailpipes out the back and dyno'd 416rwhp. the thing is..is that when i dyno'd 429 my A/F ratio was 13.0 flat now its 11.8!! probably from the exhaust switch. i will be getting it retuned.
Old 08-22-2004, 02:27 AM
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Originally Posted by 02SOMWS6
slicks or street tires? I'm thinking street for less rolling resistance

I saw some people using 45-50psi of air in the street tires to get higher numbers. There are alot of tricks to get higher numbers on the dyno.
Old 08-23-2004, 03:26 PM
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regular street tires set at correct psi settings
Old 08-23-2004, 06:47 PM
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Bolt on the front runners to the rear and air them up to 80 psi.
Old 08-23-2004, 07:37 PM
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Originally Posted by dug
Bolt on the front runners to the rear and air them up to 80 psi.
Lol!
Old 08-23-2004, 08:04 PM
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How about two temporary spares?
Old 08-25-2004, 09:19 AM
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I dyno with my slicks. dont you guy's spin on the dyno with street tires? I do. I want to do my tuning with my track shoes on
Old 08-25-2004, 04:24 PM
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Originally Posted by koolrayz
I dyno with my slicks. dont you guy's spin on the dyno with street tires? I do. I want to do my tuning with my track shoes on
I sure hope u have more than 800rwtq to spin those street tires on the dyno. Hell a twin turbo Viper was not spinning its street tires on the dyno when it was making 900rwtq. It did spin it when it made over 1000 rwtq so we had to put two people on the back of the car and it went over 1200rwtq which is what the max a dyno jet can go to.
Old 08-25-2004, 05:09 PM
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we have seen NOS cars spin on the dyno and a few Supras with alot of boost
Old 08-25-2004, 05:14 PM
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Originally Posted by thechef
we have seen NOS cars spin on the dyno usually and a few Supras with alot of boost

Did they strap them good, or maybe the rollers were smoothen because they are old. The Twin Turbo Viper was making 900rwtq around 3500RPM and it didnt spin the rollers. It did start spinning the rollers when it made over 1200rwtq.




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