Sorry I have not been on in a while, but thanks for all of the info. I now know what those do (also figured it out after a little research) but I do understand about egr systems, and will be having it dyno tuned after its up and running. The car is basically being built for power (I dont drive it more than a couple times a week)
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 1988 supra turbo. In process of modding:Roll cage, seats, dp, 3" intercooler, fuel upgrades, and turbo upgrades next.
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