when i had really jagged dyno results like that on my d15b vtec, it was because of where my timing was set at the distributor.

fixed it and it was gone

before:



after:



dont ask about the power results, broken ringlands on the after dyno run.

 

wow that changed it alot, I think I'll mess with the distributor a little
but I really think it needs a bigger fuel pump because I have to set the fuel settings above 4800 rpms really rich and it still starts to lean out ,also this is the second fuel pump I've installed on this thing, I've been getting them fromt the pick'n/pull ,but still seems like somethings killing them (over worked maybe?)
anywho its still a fun little car to drive and I've had to change my front right winter tire twice allreay lol

 

yeah, all those rough edges on the top end pretty much mean detonation what are you using to retard timing? why the hell are you running eight injectors?

 

I'm using just my msd 6btm ,its only set at 1 degree, I could turn it up ,but I'm not hearing any spark knock even on the dyno
I made the whole set up from left over parts that I've taken off customers cars hehe
except the pic-n-pull t3

 

have you checked your plugs lately? how do they look, what are they gapped at?

 

I had the plugs out last time I changed the oil they look good a little rich even ,also the gap is .044

 

Your boosted with stock plug gap ?

Gap them to .028 or a big higher.

BTW you cant always HEAR detonation.

Pull it back more.