TBI PERFORMANCE MODS MODS
Most mods you can make will yield an increase in power that is a factor of the baseline power from the factory. The problem with tweaking TBIs is that very few changes are individually noticeable. If you decide you don't like the increase compression, you can get a copper shim gasket (Felpro makes one) to move the compression back to stock. You may also need to run higher octane fuel. If you shave it too much you will need to run an oversized timing belt tensioner or an undersized belt (both sold by Mopar Performance). Shaving the head to up the compression ratio would also increase hp. Porting is probably the most costly intervention. The valve guides are probably worn, you can have them replaced or spiraled to bring them back into tolerance new valve guides will last longer. Back cutting the valves and 3-angle valve job will both help the head flow better especially at low valve lift. Visit the EEK! page for more information on the 2.2 and 2.5 liter engines and the cars around them.įor substantial money you could have the head ported, with port matching of the manifolds.See Chrysler Engine Swapping Tips and Techniques, from Hot Rod.Engines are not the only important factor in performance - see the handling modification page.These engines have nice low-end torque for four-cylinders but have issues with breathing and fuel supplies. The 2.2/2.5 TBI engines were competitive when they were made. Adding a turbocharger is rather extreme but works, as does selling the car and buying a turbo model. There isn't much you can do to increase performance a TBI engine, and the following modifications may not affect your performance too much. Modifications to Chrysler/Dodge/Plymouth 2.2 and 2.5 liter TBI engines David Zepeda pointed out that in Mexico, the 2.5 was given multiple port injection, boosting power.
Turbocharged engines had multiple-port fuel injection (each cylinder had its own injector), but the TBI models had only one, which is less efficient. The computers and the engines underwent many changes as the years went on.
These engines were used on many cars, minivans, and light trucks. The TBI engine is essentially any 2.2 or 2.5 with a single fuel injector. Some of these may shorten the lifespan of your car and/or its components. Neither Allpar nor any of the contributors take any responsibility for the results of your actions or for the results of following the steps or advice presented below.
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