Hello,
Im building my car to be a drag/occasionally a roll racing car like the events they do at local airport and i was wondering how is the pedal feel when the brake booster is deleted compared to a stock evo rs which already has no abs ?

 

no abs and no booster are COMPLETE different things,

no abs will still have normal soft pedal feel, no booster, depending on booster being used, will defer the pedal feel, but will be noticibley harder to depress forsure.

Buschur makes a kit for the booster delete.

 

Correct.

The feeling will be more direct, but will require dashboard stiffening.
The effort would be substantially a lot more, but that's why you don't skip leg day right?
For your needs, you likely don't need high levels of decel correct? then it shouldn't be a problem.