Engine mods that don't need dyno tuning

[way2fastforu]

im still stock b16b too... installed simota air filter, high performance plug and cable, 2.5" center till end Eksoz piping.. stock header...
I would lik to ask tat if i change 421 header,4.785 FD and lighten flywheel wit racing clutch... will i need to dyno tuning?

u def wont need tuning for them parts...but ul see a good increase in whp the car will pull harder wen u burry the loud pedal

 

[DanF]

a de cat i think would be daft not to do, sod the environment, let the next generation worry about it.

or at least get a high flow cat system or somthing, the cat just strangels the engine. you loose about 20% or some were in those regions of power. the B series engines rev so high they need to be able to breath properly and get rid of the exhaust gas quickly.

you will loose some performance low down but you will appricate it when you hit vtec