1986 tpi 350

Ed Wright · 05-02-2018, 03:16 PM

I have been working with TPI engines since 1985. On the 350" only in the Corvettes, 305"s in the Camaro/Firebirds. The 9th injector for cold starts used until 1989. Mass Air Flow sensors used until 1990, first year for Speed Density Mode (MAP sensor used instead of MAF sensor.) MAP stands for Manifold Absolute Pressure, which is Barometer minus Manifold Vacuum. Measures Baro at key-on, before start up, then vacuum/MAP.
Had a lot of 1985 305" Tuned Port Injected Camaros/Firebirds across my dyno.

05-02-2018, 03:16 PM	#9
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: 1986 tpi 350 I have been working with TPI engines since 1985. On the 350" only in the Corvettes, 305"s in the Camaro/Firebirds. The 9th injector for cold starts used until 1989. Mass Air Flow sensors used until 1990, first year for Speed Density Mode (MAP sensor used instead of MAF sensor.) MAP stands for Manifold Absolute Pressure, which is Barometer minus Manifold Vacuum. Measures Baro at key-on, before start up, then vacuum/MAP. Had a lot of 1985 305" Tuned Port Injected Camaros/Firebirds across my dyno. __________________ Ed Wright 4156 SS/JA Last edited by Ed Wright; 05-02-2018 at 03:20 PM.

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