CAR 97 Z28:::: car has a K&N air filter, descreened stock maf, crt aluimium elbow, hypertech reprograming with a 160 thermostat, and an airfoil has 141,xxx miles on it, THINGS GOING ON THE CAR (soon but later) 52mm rebuilt throttle body, underdive pulley,probly pacesetter heads long tube,high flow cats or no cats (got to love no emmissions YA) and mayb a few other dumb mods,just going to blow this eng up and start from strach on 1 pissed off sleeper lt1 later and if it matters i have a man trans and everythings else is stock,,,,,, anyways the question is as i look on jegs and summit for 30lb injectors they both say computer mods required as being in not up on comps what does this mean i will need to do as well as what if any problems may the car have?????????? Im thinking old school here put a lil biger carb get more fuel should b the same right. anyws thanks for reading a long post for what most will think a easy or dumb question but I read almost all post mine or not and i help when i can....

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The computor needs to be re-flashed to work with the bigger injectors/ However your just waisting your moniey on them at this point, the stokers are fine for those mods and bigger ones will not give you more power. If you add a bigger cam or higher flowing heads, then you will bigger injectors.

 

You may want to save your money you are planning to spend on smaller pulley, and use them to buy an electric water pump. The water pump on your engine, which uses a few extra horses at high RPM, is gear driven, and changing belt pulleys will do nothing much. The AC and power steering only use power when needed, and the alternatorwon't work properly if slowed down.

 

well thanks 4 the post i guess that wil save me some money and has thought me some more about comp run cars...

 

so the car i'm looking at has a crane cam and ported heads.. would i be able to put bigger injectors in? then reflash the pcm?

 

With a cam and ported heads you will need bigger injectors and a tune.

 

how much more could i expect out of it with new injectors and a tune?