Stage 2 Supercharger Engine troubles

[Nytromchi]

Hey guys need somewhere to start. Changed my boost to 6-7lbs to 11-12 lbs. When i did this i changed the pistons to the JE low compression pistons, added the larger fuel pump and went with the power commander V. Out for a ride yesterday and was on a straight away so was at WOT and out of no where starts dieing for power and i slow down and it quits. take it home and check compression and none in middle cylinder but will still start and run. also seems there is some oil leaking out somewhere now. (sidenote i added excell header and MPI can this year but did not reprogram my power commander(thinking i should have)

Where should i start?

 

[Nytromchi]

Noone have any ideas?? In talkin with friends and family feel it is mostly likely a valve..

 

[kjchristopher]

Unless you've got a boroscope, start with disassembly and figure out where the hole is.

I dropped a valve once:

 

[mpi xtx]

What was the air/fuel when at wot?

 

[Nytromchi]

I do not have an A/F gauge so i am not sure to be honest. I was going to install one this season just havent gotten around to it yet. But according to guy who did work for me said i should be around 12.5...

 

[rxrider]

Nytromchi - probably detonation showed it's ugly face, a head removal is needed either way, then you will know.

kjchristopher and Nytromchi - welcome to the site.
Please add Your location to Your user profile, site requirement.

rxrider
TY Management Team

 

[Nytromchi]

Thinking on doing this myself. Is there any links of a how to? Know mostly but just nice to have for reference if run into any issues

 

[rxrider]

Have a look in my thread, link is in my signature.
Browse the index and you'll find the info With pics to go With it.