I am currently have my Tpi system out for porting and polishing and some other goodies.. When I took my injectors out they were horrible.. My question is, will 21lb or 22lb injectors hurt me, as far as performance I was going to stick with the 19's but since my TPI system is going on my 383 when im done with it I thought why not upgrade, but I don't want to hurt my performance on my 305 since the 383 still has another 5 or 6 months till it's finished...

Thanks

You will need bigger injectors but you will also need a custom chip burnt. I would do them at the same time.