I have a 305 TPI, and was thinking of upgrading to a compcams 212/218 dur @.05, with a lift of .447/.457. Someone told me i would need an aftermarket chip. If so, who would be the best to make one for me, and how much do they go for?

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1986 Metallic Blue IROC-Z
80k miles, 305 TPI
Mods:
-Edelbrock Hi-Flow baseplate
-Dynomax Cat-back
-gutted MAF
-K&N's
-airfoil
-shiftkit

 

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