Hey Guys

What is the best timing advance for TBI?
8 degrees, 10 degrees, or less?
I am running 8 degrees advanced now.

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Jamieson
85 Blue Super Charged Iroc-Z28 Camaro
79 TransAm
1991 RS
1999 Oklahoma Gathering
2000 SWMG

[This message has been edited by Jason 85 IrocZ (edited December 06, 2000).]

 

There isn't any cut and dry number. All cars are different. You have to test the car to see which number it likes the best. At the track, gtech...

 

I agree with Brent, all cars are different depending on modifications.

For the record I am running 12 degress advanced with a blower. The car loves the extra timing. When I was dailing in the car at the track I gained .4 tenths by advancing the spark from 8 degrees to 12. The only way to accuratly tune the timing is at the track.

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1991 305 TBI Paxton SN2000,Edelbrock intake and TES, Turbo city TBI,
MSD6a,Eibach drag lauch kit, Hotchkis RTAs and panhard rod, Richmond 3:73 gears and Auburn limited slip, best ET 13.40 @ 105.4 mph

 

8 degrees is a great stating point if your doing your own chips.
To run anything else, means testing by measuring performance.