after installing MSD 6A and the blaster coil?

After in installed and MSD 6a and the blaster coil to my motor and i also bought a catback exhaust with a aftermarket cat my car now has a loud sputter like its back firing but only when i get on it is this normal or what could it be thanks again for you inputs. LEo

lol boxes are junk they tend to fuck up all your timing...look on ebay why you think everyone always selling them with no reserve cause its more problems than anything

cause there is no need for msd ignition on hondas. stock ignition can handle up to 500hp if not more. take that crap off and sell it.

speaking of the msd,
I just got my procomp cdi ignition pc6al & blaster coil 3,msd cap,ext...
I'm installing it tomorrow,I hooked it all up just touching wires & put the rev limit to 3000rpm,
& that thing is bad!....pop,pop.pop.pop.pop./...
it comes with a 2 step rpm selector (thing) so I ordered the 3000-3800 rpm pills from autozone,pick'em up saturday & head to the races on a sunday!
sorry to kind of jack up the thread,but it was on the subject.

but on the sputtering thing you said,I'm not saying you hooked it up wroung or nothing,but I tried hooking mine up & had a few hours of not starting & sputtering myself,
I gotta hold of my mechanic today & he tapped into one of my other distributors that I'm going to use,hooked it up all crazy & it works...as of starting up & reving,(soldered & heatshrinked the wires)
but ill c...
(i had to use the magnetic pickup..which I was using the white wire & hooking up the green wire straight to the tach,when he tapped the green wire to somthing with the fuel pump/distributor wires/?,because it wasnt kicking on,)
goodlucc