WebDec 18, 2014 · The first step to optimizing a TPI setup, even a stock one, is to clean up the inside of the upper plenum. Tuned Port Injection systems are well known for creating great torque thanks to their long-runner design, but this comes at the cost of upper rpm horsepower—most TPI engines are all done by 4,800 rpm or so. WebTPI Ported Plenum 85 - 92 Camaro Corvette Firebird Tuned Port Injection L98 GM. Price: $100.00. TPI Plenum Porting Service. 85 - 92 Camaro, Corvette, Firebird, Z28, IROC Z, Trans Am. Shown with Optional Machined / Brushed Finish. Ported for up to a 58mm Throttle Body & Large Siamesed Runners. Compatible with Stock, SLP, Accel, AS&M, Edelbrock ...
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WebTPI Plenum Porting Service. 85 - 92 Camaro, Corvette, Firebird, Z28, IROC Z, Trans Am. Ported for up to a 58mm Throttle Body & Large Siamesed Runners. Compatible with Stock, SLP, Accel, AS&M, Edelbrock, & TPIS … WebJul 30, 2024 · 8.4K views 2 years ago The L98 TPI is known for being a bit of a pooch over 4,200rpm. Our effort today for tuned port injection performance upgrades was put into porting a stock TPI... WebHolley Carbureted Base Only (Plenum-Top-Mounting Fabrication... $ 611.95 Katech L82/L83/L84 CNC Ported 80mm Throttle Body $ 339.99 Katech LSA/LS9 CNC Ported 87mm Throttle Body $ 534.99 Katech LT1/LT2/LT4/L86/L87 CNC Ported 87mm... $ 374.99 Katech LT5 CNC Ported 95mm Throttle Body $ 464.99 oheka castle indian wedding