For my build i'm planning on getting my truck tuned professionally when it's up and running. But my truck isn't going to be everything I want it to be right from start up. i'll be running the stock intake untill I have the cash to swap it out, then after a while i'll be adding n20, and who knows what else before or after that. would I need to retune my truck after an intake and fule injector swap? how much n20 could I run before retuning? and what if any other mods would need to be added into a tune?(I already know a cam)

Greg

 

ive seen a 125 shot on a stock tune but i would definently get the retune with new injectors and the nitrous just for the safety and eficency

 

You would need a retune for larger injectors, but could get away with about a 100 shot on a stock tune..

John

 

You will need a tune for your motor swap you are doing. So if they max it out for N/A to be perfect for your application at that time. ANY change that would effect hp would need to be safety double checked by your tuner.

On a stock tune, you can definatly get away with 125 shot of nitrous. BUT that is because they are really rich "11.9" af tuned from the factory and they have the timing set to pull more timing based on the amount of consumed air used by the engine. The more hp you make the more it tries to pull.

But on a custom tuned ecm if it isnt set for nitrous then they usually but in alot more aggressive timing tables.

IF the tuner uses efilive and you have a 1999-2002 year pcm you can use a custom operating system that will allow him to both give you FULL power and timing while Na. then you flip a switch that you run in your car and then it is ready for nitrous. Pulled timing and more fuel ect.....