Tuned Port Injection to a Chevrolet Small Block - MotorTrend
Jul 1, 2002 · The TPI manifold was originally designed for 305ci engines with 19 lb/hr fuel injectors operating at 36 psi, and employs a long and narrow runner to enhance bottom and midrange torque.
GM tuned-port injection conversion - Hemmings
Sep 23, 2018 · One of the easiest ways to obtain more power is to increase the volumetric efficiency of the fuel and intake system, and the GM TPI system fits that bill nicely. Fuel injection will increase both lower and mid-range engine torque.
Chevy TPI Problems - Hot Rod Forum
Mar 30, 2005 · Disconnect the starter motor solenoid and turn the ignition switch to crank position. If there's plenty of pressure then fuel will run into the bucket as the regulator valve opens at roughly 35psi. If there's no fuel then there's a pressure problem. Hope you get on top of it.
TPI - Third Generation F-Body Message Boards
Dec 29, 2003 · TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
How reliable is the Tuned Port Injected engine... - CorvetteForum
Apr 9, 2019 · L98’s are very reliable THAT is if they are tuned up properly, and depending on mileage a couple new gaskets especially intake manifold, valve guide seals and have UPDATED fuel injectors, YES today’s ethanol gas is not kind to to original 85-91’s they are still 28-34 year old engines and should be treated like one...if you’re expecting ...
Tuned Port Injection Questions - Tech Articles - MotorTrend
Feb 26, 2004 · Porting the intake, adding a larger throttle body and runners, and higher flow injectors will help a high performance engine. But, just as a high- flowing carburetor can be too big for a mild to...
TPI Engine Swap for Classic Chevy's - Hot Rod Magazine - MotorTrend
Here's what you need to know: Use an electric fuel pump capable of generating high levels of fuel pressure, and run a return line to recirculate fuel back to the tank. Install an oxygen...
diagnoseing TPI & LT1 problems | Grumpys Performance Garage
Feb 19, 2009 · One of the best ways to retrofit fuel injection is to still take advantage of the research General Motors put into it and find a used factory system. The Tuned Port Injection (TPI) units of the mid '80s to early '90s are still some of the best and easiest to do.
What is Tuned port injection, good, bad, ugly? - GMT400
May 22, 2020 · Good: GM engineering, reliable as a brick. Bad: GM engineering, every model year is different--and they weren't intended to be "aftermarket easy" to tune for power/driveability. They're tuned for EPA compliance, emissions and fuel economy on "stock" engines.
TPI | TPI chip programming
Welcome to Harris Performance, this site dealing with the TPI Tune Port Injection system used by GM from 1985 through 1992. I have posted pages to help those with these systems overcome the limitations of those systems and point out what those limitations are.