Hey whats up! well let me start by saying I had my car dynoed on a mustang dyno. I was greatly dissapointed due to the fact that i made only 346 hp on 25psi on MS109 race gas. When I looked at the dyno graph it was showing that i was still droping spark pretty bad. I would like to be making around 430 to 450 hp on high boost with race gas. I could use some advice for where i have gone wrong. ill list all my parts below.

Greddy exhaust
hollowed out cat
A'pexi RX6 turbo kit
Greddy IC and upper and lower piping
HKS DLI and grounding kit
Ferrea Valves and springs( reg size)
minor port and polish of head
APR head studs
AMS 780cc injectors
Walbro fuel pump
ECUTek reflash
Koyo radiator
Greddy turbo timer
Blitz EBC
Greddy head gasket
Shepperd racing trany and transfercase
HKS BOV
RPS carbon/carbon clutch
steel braided clutch line.

 

Well, if you're dropping spark, then wouldn't you start there by putting in some fresh copper plugs with the proper gap? If you haven't remedied a known problem, then I don't know what you expect us to say. If you're breaking up, it's not going to make good power at all.

 

ok so what brand and what step colder would you go with?

 

NGK BPR8ES gapped to .026, since you have the HKS DLI-2.

 

Buschur test has confirmed that gas going through a wide part of an exhaust duct and back down is about as restrictive as a cat. It causes turbulence, either get a high flow or straight pipe.

 

NO cams?

 

yeah man no cams yet lol ran out of money hahah i just bought a 87 rx7 turbo to build for drift so yeah. i was thinking about going with hks 272s. what do you think of them?

 

That's part of the problem....Cams can be had for pretty cheap if you get used....If you would have chosen a turbo kits rather than paying so much for the RX6R kit, you would some money left for a set of nice cams, upgraded valve-train and maybe a good standalone. The stock cams don't have the enough lift and duration to take advantage the extra air flowing the the head from the new turbo....so your ported head becomes a waste....

 

Just curious how th dyno graph shows a "drop" in spark. Lean spikes?

 

some jun 272 would be nice. depends what you want to do too. but cams would help a little