General Falling on face and knocking at 6k rpm

[Mike Marnik]

I just turned the boost up to 20psi after installing my MLS HG and ARP head studs and cams, along with my water/meth injection. Been slowly getting it tuned and its no knock to maybe 5 counts until 5900 rpm on a 88/12 water/meth mix right now. Well when after 5900 it jump to 21 and 43 by 6k falling on its face during this. I richend it up quite a bit on the ECU and no change.

I don't know if it fuel cut or spark blow out but I can't see if being fuel cut as on my SAFC I'm still at -4% at 6 and 7k ne points. Any advice or should I just richen it up some more?

Also when I did the the other work I replaced the spark plugs with new ones. I just checked the gap on them and there were a little high maybe .32 .33 so I gapped them back down.

 

[Rex2342]

Gap the plugs to .28 and see where that leads. I didn't see a turbo or FMIC upgrade in your profile so I'm assuming 14b and a side mount? The 14b will kinda crap out around 6400rpm and at 20psi your past its efficiency rating and heat soaking the SMIC too. Try backing the boost down to 18psi and tuning from there.

 

[Mike Marnik]

i was reading that the efficiany range on the 14b is about 21 psi. and im still on the stock smic but have water/meth injection. i regapped the plugs but havent taken her back out yet ill do a pull on the way to work tomorrow and if its still acting up ill turn the boost down. would the turbo being outta its efficency range cause the knock to spike like that also??? thanks for the advice

 

[Mike Marnik]

no luck with regapping the plugs and 18psi today at lunchtime when it was like 100 out it would bog at 4000-4500rpm like there was a boost leak and similair to what happens at 6k just no knock im going to do a boost leak test here one the car has cooled off a little more.

 

[Mike Marnik]

ok i had a leak at my water injection nozzle/injector and a large pin sixe hole in the up neck on the inter cooler. i jbwelded the heck out of the intercooler neck as it was pitted alot in that are and im letting it cure over night hopefully tomorrow will yeild some posative results.